Maxillary midline diastema is a common esthetic problem in mixed and permanent dentition. The space can occur either as a transient malocclusion or created by developmental, pathological or iatrogenic factors. Many innovative therapies are available from restorative procedures such as composite build-up to surgery (frenectomies) and Orthodontics is available. Treatment depends upon the correct diagnosis of its etiology and early intervention relevant to the specific etiology. The aim of this article is to review the possible aetiology and management options which will help the clinician to diagnose, intercept and to take effective actionto correct the midline diastema.
Buccolingual malrelationship of upper and lower
teeth.Anterior or posterior (unilateral or bilateral) with or
without mandibular displacement.
Buccal crossbite: Lower teeth occlude buccal to
corresponding upper teeth .
Lingual crossbite (scissors bite): Lower teeth occlude
lingual to palatal cusps of upper teeth.
The general indications for SARPE are skeletal maturity, transverse maxillary deficiency, excessive display of buccal corridors when smiling, and anterior crowding.
Buccolingual malrelationship of upper and lower
teeth.Anterior or posterior (unilateral or bilateral) with or
without mandibular displacement.
Buccal crossbite: Lower teeth occlude buccal to
corresponding upper teeth .
Lingual crossbite (scissors bite): Lower teeth occlude
lingual to palatal cusps of upper teeth.
The general indications for SARPE are skeletal maturity, transverse maxillary deficiency, excessive display of buccal corridors when smiling, and anterior crowding.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Description :
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Description :
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all
aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Biomechanics of fixed functional appliances /certified fixed orthodontic cour...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
Fixed orthodontic appliances /certified fixed orthodontic courses by Indian...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
Fixed orthodontic appliance /certified fixed orthodontic courses by Indian d...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
Combined orthodontic and prosthetic therapy special considerations.(52)Abu-Hussein Muhamad
Agenesis, the absence of permanent teeth, is a common occurrence among dental patients. The total incidence of tooth agenesis is about 4.2% among patients that are seeking orthodontic treatment and with the exception of third molars, the maxillary lateral incisors are the most common congenitally missing teeth with about a 2% incidence. The maxillary lateral incisor is the second most common congenitally absent tooth. There are several treatment options for replacing the missing maxillary lateral incisor, including canine substitution, tooth-supported restoration, or single-tooth implant. Dental implants are an appropriate treatment option for replacing missing maxillary lateral incisor teeth in adolescents when their dental and skeletal development is complete. This case report presents the treatment of a patient with congenitally missing maxillary lateral incisor using dental implants. The paper discusses the aspects of pre-prosthetic orthodontic diagnosis and the treatment that needs to be considered with conservative and fixed prosthetic replacement.
Esthetic Evaluation of ImplantsPlaced after Orthodontic Treatment in Patients...Abu-Hussein Muhamad
Congenitally missing teeth are frequently presented to the dentist. Interdisciplinary approach may be needed for the
proper treatment plan. Several treatment options exist for the replacement of congenitally missing lateral incisors.
These options include canine substitution, resin bonded fixed partial dentures, cantilevered fixed partial dentures,
conventional fixed partial dentures and single tooth implants. Depending on which treatment option is chosen, a
specific criterion has to be addressed. Interdisciplinary treatment plays a vital role to achieve an excellent, esthetic
result for a most predictable outcome. This article aims to present a case report of replacement of bilaterally
congenitally missing maxillary lateral incisors with dental implants
Key words: congenitally missing lateral incisor, interdisciplinary treatment, dental impla
Multidisciplinary approach in the rehabilitation of congenitally missing late...Abu-Hussein Muhamad
Agenesis, the absence of permanent teeth, is a common occurrence among dental patients. The total incidence of tooth agenesis is about 4.2% among patients that are seeking orthodontic treatment and with the exception of third molars, the maxillary lateral incisors are the most common congenitally missing teeth with about a 2% incidence. The maxillary lateral incisor is the second most common congenitally absent tooth. There are several treatment options for replacing the missing maxillary lateral incisor, including canine substitution, tooth-supported restoration, or single-tooth implant. Dental implants are an appropriate treatment option for replacing missing maxillary lateral incisor teeth in adolescents when their dental and skeletal development is complete. This case report presents the treatment of a patient with congenitally missing maxillary lateral incisor using dental implants. The paper discusses the aspects of pre-prosthetic orthodontic diagnosis and the treatment that needs to be considered with conservative and fixed prosthetic replacement.
Tooth Agenesis in Orthodontic Patients at Arab Population in IsraelAbu-Hussein Muhamad
Non-syndromic tooth agenesis has been occasionally described in literature and data available for its prevalence is rare in Arabs population in Israel. The purpose of the present retrospective radiographic study was to provide data concerning the prevalence of non-syndromic hypodontia in patients reporting to the Center for Dentistry,Research & Aesthetics, Jatt, Almothalat, Israel
Multidisciplinary Approach in the Rehabilitation of Congenitally Maxillary C...Abu-Hussein Muhamad
Objective: This case report describes the multidisciplinary
approach to treat a congenitally missed maxillary canine, how to
improve patient’s smile using orthodontic fixed appliance, endosseous
dental implant, and porcelain veneer to achieve the treatment results of
function and esthetic.
Materials and procedures: Unilateral agenesis of the permanent
maxillary canines in healthy individuals is extremely rare. This
paper presents the case of a female patient diagnosed with congenital
unilateral agenesis of the permanent maxillary canines as well as
occlusal abnormalities in the form of left-side crossbite. To restore the
proper aesthetics and function, interdisciplinary therapeutic treatment
was implemented. In the case presented in this paper, the aim of
oral rehabilitation was to restore a functional balance by obtaining
proper skeletal relationships, creating optimal occlusal conditions and
obtaining arch continuity.
Conclusion: Interdisciplinary treatment combined of orthodontics,
implant surgery, and prosthodontics was useful to treat a nonsyndromic
oligodontia patient. Especially, with the new strategy, implantanchored
orthodontics, which can facilitate the treatmentand make it
more simply with greater predictability.
Role of Pediatric Dentist - Orthodontic In Cleft Lip and Cleft Palate Patientsiosrjce
IOSR Journal of Dental and Medical Sciences is one of the speciality Journal in Dental Science and Medical Science published by International Organization of Scientific Research (IOSR). The Journal publishes papers of the highest scientific merit and widest possible scope work in all areas related to medical and dental science. The Journal welcome review articles, leading medical and clinical research articles, technical notes, case reports and others.
Pre-Prosthetic Orthodontic Implant for Management of Congenitally Unerupted L...Abu-Hussein Muhamad
The maxillary lateral incisor is one of the most common congenitally missing teeth of the permanent
dentition. With the advent of implants in the field of restorative dentistry, a stable and predictable fixed
prosthetic replacement has become a reality, especially for young adult patients who suffer from congenital
absence of teeth. The dual goals of establishment of functional stability as well as enhancement of esthetic
outcomes are made achievable by the placement of implants. A multidisciplinary team approach involving the
triad of orthodontist, periodontist and restorative dentist will ensure the successful completion of the integrated
treatment approach in these patients. The present case report achieved successful implant based oral
rehabilitation in a patient diagnosed with congenital absence of bilateral maxillary lateral incisors utilizing a
preprosthetic orthodontic implant site preparation for the purpose of space gain.
Keywords: Preprosthetic, interdisciplinary treatment, implant placement
Introduction: Impaction of maxillary canines is a frequently encountered clinical problem in orthodontic therapy. When a preventive approach fails, treatment involves surgical exposure of the impacted tooth, followed by orthodontic traction to guide and align it into the dental arch. The aim of the present report was to demonstrate by case reports of an adult patient with bilateral impacted maxillary canines treated with surgical exposure and orthodontic treatment
Introduction: Impaction of maxillary canines is a frequently encountered clinical problem in orthodontic therapy. When a preventive approach fails, treatment involves surgical exposure of the impacted tooth, followed by orthodontic traction to guide and align it into the dental arch. The aim of the present report was to demonstrate by case reports of an adult patient with bilateral impacted maxillary canines treated with surgical exposure and orthodontic treatment.
ORTHODONTIC TREATMENT OF AN IMPACTED MAXILLARY CENTRAL INCISOR COMBINED WI...Abu-Hussein Muhamad
Impaction of maxillary permanent incisors is not a frequent case in dental practice, but its treatment is challenging because of these teeth importance to facial esthetics Management by a combination of orthodontics and surgery produces a satisfactory result. The surgical exposure and orthodontic traction of impacted central incisor after surgical exposure of impacted maxillary central incisor teeth is presented in this case report.
Key words: Impacted tooth, Maxillary incisors orthodontics, tooth movement
Pre prosthetic orthodontic implant for management of congenitally unerupted l...Abu-Hussein Muhamad
The maxillary lateral incisor is one of the most common congenitally missing teeth of the permanent dentition. With the advent of implants in the field of restorative dentistry, a stable and predictable fixed prosthetic replacement has become a reality, especially for young adult patients who suffer from congenital absence of teeth. The dual goals of establishment of functional stability as well as enhancement of esthetic outcomes are made achievable by the placement of implants. A multidisciplinary team approach involving the triad of orthodontist, periodontist and restorative dentist will ensure the successful completion of the integrated treatment approach in these patients. The present case report achieved successful implant based oral rehabilitation in a patient diagnosed with congenital absence of bilateral maxillary lateral incisors utilizing a preprosthetic orthodontic implant site preparation for the purpose of space gain.
This report, prepared by the student at the College of Dentistry, Hassan Atheed , in the third phase discusses scientific topics, but it maybe did not be 100% complete.
Diastema, which means interval in Greek, is a gap or space between two or more consecutive teeth. It occurs more frequently in the median plane of the maxillary arch between the two central incisors and hence called the median, central or midline diastema.[1,2]Maxillary midline diastemas are an aesthetic concern for many patients and their parents. The diastema seen in many children as part of normal development in the mixed dentition, disappears naturally in most cases as dental development proceeds.It may however persist either because of its width or other associated factors. If it is to be closed satisfactorily by orthodontics an understanding of the aetiology is essential.
حسن عضيد
The management of impacted canines is important in terms of esthetics and function. Clinicians must formulate treatment plans that are in the best interest of the patient and they must be knowledgeable about the variety of treatment options. When patients are evaluated and treated properly, clinicians can reduce the frequency of ectopic eruption and subsequent impaction of the maxillary canine. The simplest interceptive procedure that can be used to prevent impaction of permanent canines is the timely extraction of the primary canines. This procedure usually allows the permanent canines to become upright and erupt properly into the dental arch, provided sufficient space is available to accommodate them. In the present article, an overview of the incidence and sequelae, as well as the surgical, periodontal, and orthodontic considerations in the management of impacted canines is presented.
Role of pediatric dentist orthodontic in cleft lip and cleft palate patients Abu-Hussein Muhamad
Cleft Lip and Palate is severe birth defect occurring one in 700-1000 newborn infants. Cleft lip and palate together account for 50% of all cases whereas isolated cleft lip and palate occur in about 25% of cases. Management of Cleft Lip and Palate is carried out by multi disciplinary team approach. When ever a child is born with cleft lip and palate or one of them, it interferes with feeding and speech and hampers esthetic severely. Consequently it is psychologically traumatic to both patients as well as for their family members. Patients with cleft lip and palate are also are at high risk for dental diseases. So in such situation proper education, guidance, motivation and encouragement are required. Pre and post surgically pediatric dentist and orthodontics helps the patient by providing functionally and esthetically acceptable occlusion, good oral hygiene and preventive dental care. This paper describes the treatment protocol of pediatric dentistry and orthodontic with cleft lip and palate.
Treatment of Patients With Congenitally Missing Lateral Incisors: Is an Inter...Abu-Hussein Muhamad
Congenitally missing teeth are frequently presented to the dentist. Interdisciplinary approach may be needed for the proper treatment plan. The available treatment modalities to replace congenitally missing teeth include prosthodontic fixed and removable prostheses, resin bonded retainers, orthodontic movement of maxillary canine to the lateral incisor site and single tooth implants. Dental implants offer a promising treatment option for placement of congenitally missing teeth. Interdisciplinary approach may be needed in these cases. This article aims to present a case report of replacement of bilaterally congenitally missing maxillary lateral incisors with dental implants.
Similar to Maxillary Midline Diastema – Aetiology And Orthodontic Treatment- Clinical Review (20)
Congenital absence of maxillary lateral incisors is a frequent clinical challenge which must be solved by a multidisciplinary approach in order to obtain an
esthetic and functional restorative treatment. . Fixed prosthodontic and removable prostheses, resin bonded retainers, orthodontic movement of maxillary
canine to the lateral incisor site and single tooth implants represent the available treatment modalities to replace congenitally missing teeth. This case report
demonstrates the team approach in prosthetic and surgical considerations and techniques for managing the lack of lateral incisors. The aims of this case
report of replacement of bilaterally congenitally missing maxillary lateral incisors with dental implants.
Aesthetic Management of Fractured Anteriors: A Case ReportAbu-Hussein Muhamad
Introduction: Coronal fracture of anterior teeth is an important topic for esthetic dentistry. Such fractures may jeopardize esthetics, function, tissue biology
and occlusal physiology, thus endangering tooth vitality and integrity. Coronal fractures resulting from dental trauma most frequently occur to the maxillary
anterior teeth of adolescents and less frequently to mandibular teeth. Adult teeth may also suffer traumatic fracture, although less frequently than for
adolescents.
Case Report: In our case, an economical and time-saving novel technique has been described for direct composite restoration in a young patient with
uncomplicated fractured maxillary anterior tooth.
Conclusion: As restoring a fractured tooth is a complex procedure, this technique can prove as a simple, effective and appropriate technique that will fulfill all
the requirements of dental personnel. This technique can also prove to be easy for inexperienced beginner clinicians without requiring special skills in
providing the patients with direct composite restorations.
Impacted Maxillary Central Incisors: Surgical Exposure and Orthodontic Treat...Abu-Hussein Muhamad
The maxillary permanent central incisor develops early in life and forms part of an aesthetic smile. Disruption of the formation or eruption of the permanent
central incisor has multiple etiological factors. Treatment options depend to some extent on the cause of failure of eruption of the central incisor. Generally,
the earlier treatment is provided, the higher the likelihood of success and the less the complexity. Our results suggest that close monitoring and interdisciplinary
cooperation during the treatment phases led to a successful esthetic result, with good periodontal health and functional occlusion.
Excess of space in the dental arch is diagnosed as a
generalised spacing or a local divergence, often
observed in the maxillary anterior region, as a median
diastema, traumatic loss of central incisors, or
congenital absence of lateral incisors. Furthermore,
spacing is observed in aging individuals, due to
pathological migration of teeth caused by
periodontitis. Finally, adult individuals with partial
edentulous jaws demand pre-prosthetic orthodontic
treatment from functional aspects. Thus, indication for
orthodontic treatment in subjects with spacing of teeth
exists for aesthetic reasons, but also for facilitating
prosthetic restorations with optimal occlusalstability.
Dental implants represent one of the most successful treatment modalities in dentistry.
However, failures do occur in the range from 5 to 8% for routine procedures and up to 20% in major grafting
cases after at least 5 years of function . The majority of implant losses may be explained as biomechanically
induced failures, since low primary implant stability, low bone density, short implants and overload have been
identified as risk factors . Hence, achievement and maintenance of implant stability are pre-conditions for a
successful clinical outcome with dental implants.
The review focuses on different methods used to assess implant stability and recent advances in this field.
Aesthetic Management of Fractured Anteriors: A Case ReportAbu-Hussein Muhamad
Introduction: Coronal fracture of anterior teeth is an important topic for esthetic dentistry. Such fractures may jeopardize esthetics, function, tissue biology
and occlusal physiology, thus endangering tooth vitality and integrity. Coronal fractures resulting from dental trauma most frequently occur to the maxillary
anterior teeth of adolescents and less frequently to mandibular teeth. Adult teeth may also suffer traumatic fracture, although less frequently than for
adolescents.
Case Report: In our case, an economical and time-saving novel technique has been described for direct composite restoration in a young patient with
uncomplicated fractured maxillary anterior tooth.
Conclusion: As restoring a fractured tooth is a complex procedure, this technique can prove as a simple, effective and appropriate technique that will fulfill all
the requirements of dental personnel. This technique can also prove to be easy for inexperienced beginner clinicians without requiring special skills in
providing the patients with direct composite restorations
Orthodontic tooth movement is basically a biologic response towards a mechanical force. Osteoclast and osteoblast cells mediate bone resorption and apposition, which eventually produces tooth movement. Researches showed that the rate of orthodontic tooth movement can be altered by certain drugs locally or systemically. The Objective of this article is to discuss the current data concerning the effect of drugs on orthodontic tooth movement.
The multifactorial factors influenc cleft Lip-literature review Abu-Hussein Muhamad
Congenital cleft-Lip and cleft palate have been the subject of many genetic
studies, but until recently there has been no consensus as to their modes of
inheritance. In fact, claims have been made for just about every genetic
mechanism one can think of. Recently, however, evidence has been
accumulating that favors a multifactorial basis for these malformations. The
purpose of the present paper is to present the etiology of cleft lip and cleft palate
both the genetic and the environmental factors. It is suggested that the genetic
basis for diverse kinds of common or uncommon congenital malformations may
very well be homogeneous, whilst, at the same, the environmental basis is
heterogeneous.
Dental implants represent one of the most successful treatment modalities in dentistry.
However, failures do occur in the range from 5 to 8% for routine procedures and up to 20% in major grafting cases after at least 5 years of function . The majority of implant losses may be explained as biomechanically induced failures, since low primary implant stability, low bone density, short implants and overload have been identified as risk factors . Hence, achievement and maintenance of implant stability are pre-conditions for a successful clinical outcome with dental implants.
The review focuses on different methods used to assess implant stability and recent advances in this field
Over time, progressively shorter implants have been placed such that short implants are now available that are less than 6 mm in length. The viability and high success rates seen with short implants can be explained by osseointegration, the macro geometric design of the implant, as well as physics and the distribution of forces. This paper was aimed to review the stability and survival rate of short implants under functional loads. Numerical and clinical studies were reviewed. Keywords: Short dental implants, sinus augmentation, factors affecting bone regeneration in dental implantology
Porcelain laminate veneers are among the most esthetic means of creating a more pleasing and beautiful smile. Porcelain veneers within reason allow for the alteration of tooth position, shape, size and color. They require a minimal amount of tooth preparation, approximately 0.5 mm to 0.7mm of surface enamel reduction. This study describes the use of ceramic veneers without tooth wear, reinforcing the concept that minimally invasive porcelain laminate veneers could become versatile and conservative allies in the fi eld of esthetic dentistry. Keywords: Ceramics, dentin-bonding agents, esthetics
Immediate Restoration of Single Implants Replacing Lateral Incisor Compromis...Abu-Hussein Muhamad
Today, the diagnosis of internal root resorption is significantly improved by the three-dimensional imaging. Furthermore, the CBCT’s superior diagnosis accuracy resulted in an improved management of the resorptive defects and a better outcome of Implant therapy of teeth with internal resorption.Implant has become a wide option to maintain periodontal architecture. Diagnosis and treatment planning is the key factors in achieving the successful outcomes after placing and restoring implants placed immediately after tooth extraction. The purpose of this clinical update is to report on the success and survival of Immediate restoration of single implants replacing right lateral incisor compromised by internal resorption.
Immediate Implant Placement And Restoration With Natural Tooth In The Maxilla...Abu-Hussein Muhamad
Anterior tooth loss and restoration in the esthetic zone is a common challenge in dentistry today. The prominent visibility of the area can be especially distressing to the patient and requires a timely and esthetically pleasing solution. Immediate single-tooth implantation followed by immediate provisionalization is becoming an increasingly desirable treatment that offers numerous benefits over conventional delayed loading. Provisionalization for immediately-placed implants using the patient’s existing tooth can enhance the final aesthetic outcome if certain steps are
followed. If the natural tooth is intact and can be used as a provisional, the emergence profile can be very similar to the preoperative condition. This article outlines a technique to use the patient’s natural tooth after extraction to provisionalize an implant.
Clinical Management of Bilateral Impacted Maxillary CaninesAbu-Hussein Muhamad
Introduction: Impaction of maxillary canines is a frequently encountered clinical problem in orthodontic therapy. When a preventive
approach fails, treatment involves surgical exposure of the impacted tooth, followed by orthodontic traction to guide and align it into the
dental arch. The aim of the present report was to demonstrate by case reports of an adult patient with bilateral impacted maxillary canines
treated with surgical exposure and orthodontic treatment.
Material and Methods: A 15year-old female with various degrees of bilateral palatal impaction of maxillary canines were managed
by the described technique.
Results and Discussion: Autonomous eruption of the impacted canines after surgical uncovering was witnessed in all patients
without the need for application of a vertical orthodontic force for their extrusion.
Conclusion: The described method of surgical uncovering and autonomous eruption created conditions for biological eruption of the
palatally impacted canines into the oral cavity and facilitated considerably the subsequent orthodontic treatment for their proper alignment
in the dental arch.
Keywords: Impacted canines; Surgical; Tooth exposure; Orthodontic treatment
“One-Piece” Immediate-Load Post-Extraction Implant In Maxillary Central IncisorAbu-Hussein Muhamad
Abstract: This case report describes extraction of a fractured left maxillary central incisor tooth, followed by immediate placement of an one-piece implant in the prepared socket and temporization by a bonded restoration.
Materials And Methods: The tooth was extracted with minimal hard and soft tissue trauma and without flap reflection. The socket was prepared to the required depth and a Implant was inserted.
Results: The atraumatic operating technique and the immediate insertion of the one-piece Implant resulted in the preservation of the hard and soft tissues at the extraction site.
Conclusion: The “One-piece” dental implant and provisional restoration provided the patient with immediate esthetics, function, comfort and most importantly preservation of tissues. The one-piece implant design resulted in a high cumulative implant survival rate and beneficial marginal bone levels.
Single Visit Replacement of Central Maxillary Using Fiber-Reinforced Composi...Abu-Hussein Muhamad
Fiber reinforced composites are high strength filling materials composed of conventional composites and glass fibres. They exhibit extensive applications in different fields of dentistry. This clinical report present a case where FRC technology was successfully used to restore central maxillary incisor edentulous area in terms of esthetic-cosmetic values and functionality.
Zirconium Dental Implants And Crown for Congenitally Missing Maxillary Latera...Abu-Hussein Muhamad
Zirconia implants were familiarized into dental implantology. Zirconia appears
to be an appropriate implant material due to its low plaque affinity, tooth like color, biocompatibility and mechanical properties. The following a case presentations will show how the acid-etched zirconia Implant can be used to functionally and aesthetically replace congenitally missing left lateral incisor tooth germ in the maxilla, and achieve optimal soft tissues and health.
Surgery of Labially Impacted Canine & Orthodontic Management – A Case ReportAbu-Hussein Muhamad
Maxillary canines are one of the most common teeth that are impacted among patients seeking orthodontic treatment. Depending on the position of these impacted teeth, various surgical techniques have been employed for their exposure. His primary goal of surgical phase is to provide the means for correct position of orthodontic anchorage. Additionally, the technique used must ensure favorable tissue anatomy that will permit long-term maintenance of periodontal health. In the present case, a labially impacted maxillary left canine was surgically exposed using an apically positioned flap. Orthodontic extrusion was carried out further.
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
Couples presenting to the infertility clinic- Do they really have infertility...Sujoy Dasgupta
Dr Sujoy Dasgupta presented the study on "Couples presenting to the infertility clinic- Do they really have infertility? – The unexplored stories of non-consummation" in the 13th Congress of the Asia Pacific Initiative on Reproduction (ASPIRE 2024) at Manila on 24 May, 2024.
Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
Explore natural remedies for syphilis treatment in Singapore. Discover alternative therapies, herbal remedies, and lifestyle changes that may complement conventional treatments. Learn about holistic approaches to managing syphilis symptoms and supporting overall health.
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
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Maxillary Midline Diastema – Aetiology And Orthodontic Treatment- Clinical Review
1. IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
e-ISSN: 2279-0853, p-ISSN: 2279-0861.Volume 15, Issue 6 Ver. II (June. 2016), PP 00116-130
www.iosrjournals.org
DOI: 10.9790/0853-150602116130 www.iosrjournals.org 116 | Page
Maxillary Midline Diastema – Aetiology And Orthodontic
Treatment- Clinical Review
Muhamad Abu-Hussein*
, Nezar Watted* *
* University Of Naples Federic II, Naples, Italy, Department Of Pediatric Dentistry, University Of
Athens,Athens, Greece
**
University Hospital Of Würzburg Clinics And Policlinics For Dental, Oral And Maxillofacial Diseases Of
The Bavarian Julius-Maximilian-University Wuerzburg, Germany And Department Of Orthodontics, Arab
American University, Jenin,Palestine
Abstract: Maxillary midline diastema is a common esthetic problem in mixed and permanent dentition. The
space can occur either as a transient malocclusion or created by developmental, pathological or iatrogenic
factors. Many innovative therapies are available from restorative procedures such as composite build-up to
surgery (frenectomies) and Orthodontics is available. Treatment depends upon the correct diagnosis of its
etiology and early intervention relevant to the specific etiology. The aim of this article is to review the possible
aetiology and management options which will help the clinician to diagnose, intercept and to take effective
actionto correct the midline diastema.
Keywords: Diastema, orthodontic treatment, retention, relapse, hypertrophic frenum
I. Introduction
Diastema, which means interval in Greek, is a gap or space between two or more consecutive teeth. It
occurs more frequently in the median plane of the maxillary arch between the two central incisors and hence
called the median, central or midline diastema.[1,2]Maxillary midline diastemas are an aesthetic concern for
many patients and their parents. The diastema seen in many children as part of normal development in the mixed
dentition, disappears naturally in most cases as dental development proceeds.It may however persist either
because of its width or other associated factors. If it is to be closed satisfactorily by orthodontics an
understanding of the aetiology is essential.[1,2,3,4]
Angle (1907) described the dental midline diastema as a rather common form of incomplete occlusion
characterized by a space between the maxillary and – less frequent mandibular central incisors. He also
recognized the functional and esthetic implications of the midline diastema. He stated that the interdental
diastema "always creates an unpleasant appearance and interferes with speech depending on its width".[5]
Similarly, Andrews (1972) in his classical article "The six keys to normal occlusion" supported, in the fifth
principle, the view that interdental diastemas should not exist and that all contact areas should be tight, so that
the patient has "straight and attractive teeth, as well as a correct overall dental occlusion".[6]
Numerous studies have investigated the frequency/prevalence of diastema. Consequently, there was a
wide range of findings from 1.6% to 25.4% in adults and an even greater range in groups of young people .
Differences in epidemiological study findings may be attributed to the increased number of factors contributing
to midline diastema, to the definitions used to explain its presence and to gender and race differences in the
distribution of the hereditary feature in question.[1,2,3]
Moyers (1988)[7] studied 82 patients that presented maxillary midline diastema and reported the following
causes:
a) imperfect fusion at midline of premaxilla (32.9%),
b) enlarged or malposed upper labial frenum (24.4%) (Fig. 01),
c) midline diastema as part of normal growth (23.2%),
d) congenitally missing lateral incisors (11%) (Fig. 02a-c),
e) supernumerary teeth at the midline (3.7%) (Fig. 03a-c),
f) unusually small teeth (2.4%) (Fig. 04), and
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Fig.01: Diastema with abnormal Fraenum
a b c
Fig.02a-c: Missing maxillary lateral incisors
a b c
Fig.03a-c: supernumerary teeth at the midline fore extraction and after extraction
Fig.04: unusually small lateral tooth
g) combination of imperfect fusion and congenitally missing lateral incisors (2.4%).
Other causes for the development of the maxillary midline diastema referred in literature involve:
a) rotated teeth,
b) parafunctional oral habits, such as thumb/finger sucking or abnormal tongue posture (Fig. 05a, b),
a b
Fig.05 a, b: oral habits, thumb/finger sucking (a) or abnormal tongue posture (b)
3. Maxillary Midline Diastema – Aetiology And Orthodontic Treatment- Clinical Review
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a b
Fig.06a, b:Diastema after RPE, intraoral Foto (a), DVT (b)
c) orthodontic treatment, as in cases of rapid palatal expansion or false teeth movement (Fig. 06a-c),
d) increased anterior overbite,
e) distal or labial inclination of maxillary central incisors
f) generalized spacing (Fig. 07), and
g) pathologic teeth migration due to periodontal disease (Fig. 08a, b).
Broadbent (1941) described the maxillary midline diastema in growing children as non-esthetically pleasing and
characterized it as the "ugly duckling" stage of dental development. He considered this stage asa transitional
phase for the maxillary interincisal diastema, indicating the space available for the erupting permanent dentition.
Broadbent also described the closure of this diastema with complete eruption of lateral incisors and canines as a
normal stage of occlusal development.[8]
Fig.07: generalized spacing
a b
Fig. 8a, b:Development of a Diastema as a result of periodontal destraction
Based on causes, distinguish physiological and pathological diastema. As pathological diastema
classifies a true diastema (diastema vera) and false diastema (diastema spuria). A different way of differentiation
is provided by many reseachers, who believies that true diastemata are those that increase with the growth of
dental arches, and the false ones undergo reduction during the development of occlusion [5]. In the English
literature, each space between the teeth is called a diastema.
Sanin et al developed a method that could predict whether the space would close
spontaneously in the developing dentition. This method is based on millimeter measurements in the early mixed
dentition and is claimed to have an accuracy of 88%. As the size of the diastema increases the possibility of
space closure without treatment reduces.[9]
Sanin‟s prediction is as follows:
-- For a 1 mm space in the early mixed dentition the possibility of spontaneous space closure is 99%;
- For a 1.5 mm space the possibility is 85%;
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-For a 1.85 mm diastema it is 50%;-For a 2.7 mm space the possibility of closure without treatment is only 1%.
The measurement should be made after the eruption of the lateral incisors. Hence it is advisable to intervene
early if the midline diastema is more than 1.85 mm after the eruption of the permanent lateral incisors.
[9]Numerous etiological factors contributing to the development of midline diastema have been reported and
discussed in the literature. There is no agreement on a single etiological factor. The prevailing view seems to
consider its development as a multifactorial phenomenon.[1,2,3,4,9]
The aim of this article is to review the possible aetiology and management options which will help the
clinician to diagnose, intercept and to take effective action to correct the midline diastema. The available data
shows that an early intervention is desirable in cases with large diastemas. Treatment modality, timing and
retention protocol depends on the aetiology of the diastema. Therefore, priority needs to be given to diagnosing
the aetiology before making any treatment decisions.
A.Prevalene Midline Diastema
Numerous studies have investigated the frequency/prevalence of diastema. Consequently, there was a
wide range of findings from 1.6% to 25.4% in adults and an even greater range in groups of young people
[10,11,12,13]. Differences in epidemiological study findings may be attributed to the increased number of
factors contributing to midline diastema, to the definitions used to explain its presence and to gender and race
differences in the distribution of the hereditary feature in question.[13]
The incidence of midline diastema varies greatly with the age group, gender, population and race. This
condition is very common in the paediatric age-group at the early stages of dental development [ 11].The
diastema remains after the eruption of the permanent incisors and canine, such may not close on its own [1].
Oesterle and Shellhart, in 1999, reported 97% incidence in 5-year-old patients, and this decreased with age [5].
While midline diastema was found in 37% adolescent in Nigeria[14]There are divergent views on diastema. The
aesthetic importance varies in relation to culture, age group and racial background. Influenced by such culture
and social forms, individuals without a diastema may desire to have it created through cosmetic dentistry, while
some others with diastema would rather want it closed or removed, because they find it aesthetically
displeasing. [5, 6].
In Africa, maxillary midline diastema is regarded as an attractive dental feature, a sign of beauty,
especially in the females, and is used as notable successful trademark[4]. Meanwhile, a study by Oboro et al in
2008 reported that majority of patients interviewed did not support the artificial creation of midline diastema [
15].The incidence of median diastema found in current study is close to that found in Kuwait (26.8%) [16]. A
study among Turkish population showed that midline diastema was observed in (4.5%) of the patients and it was
almost equally distributed between the females and males, 35 in females and 33 in males [17] ,whereas a study
among Tanzanians found the incidence to be 26%, 11% and 8% for maxillary, mandibular, and both arches
midline diastema respectively [18]. These figures were lower in these populations than in the current study. The
percentage of median diastema 12.59 % is considerably higher in a study done in Pakistan [19] as compared to
prevalence in United Kingdom 3.4 % of Caucasians and 1.6 % of South Indians.
The prevalence of median diastema varies in different population groups. In the earliest study, Taylor
reported that the prevalence of median diastema was 7% among Californian children ranging in age of 12-18
years[20]. In two studies on Caucasian children in the United Kingdom a prevalence of 6.8% and 3.5 to 4% was
reported by Weyman and Gardiner[21,22]. In a comparative study of children Horowitz reported a prevalence of
median diastema of 8% for Caucasians and 19% forNegroids . In a comparative study of adults, Lavelle reported
a prevalence of 3.5%, 3.4% and 5.2% for Caucasians, Mongoloids and Negroids respectively . Mc Vay and
Latta studied median diastemas radiologically considering a space of more than 0.5 mm as positive for the
trait[23]. They observed a prevalence of 9.6%, 12.5% and 16.3% for median diastema of 0.5 to 1.49 mm for
Caucasians, Mongoloids and Negroids respectively. In the same study a prevalence of 10.4%, 7.6% and 12.9%
was observed for median diastema of more than 1.5 mm for Caucasians, Mongoloids and Negroids respectively.
The high prevalence for all racial groups in the above study may be due to the radiological method enabling the
detection of median diastema of 0.5 mm. However, the prevalence for the Caucasian-Mongoloid groups is
similar to tlie Negroids, being relatively higher as in the earlier studies of Horowitz and Levalle who used the
direct method .[24,25]
The prevalence of the diastema in female was more than male. This result disagree with Nainar and
Gnanasundaram [11] and Al-Huwaizi [26] which found that the prevalence of midline diastema in male more
than female.
Genetic factors most likely play a leading role in male-female differences. Omotoso and Kadir was found that
maxillary midline diastema occurs more frequently than mandibular midline diastema, and that females are
more likely to have a maxillary midline diastema, while males are more likely to have a mandibular midline
diastema. Diastema runs in families, and it is suggested that male children are more likely to inherit it [1,2,27].
5. Maxillary Midline Diastema – Aetiology And Orthodontic Treatment- Clinical Review
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B. Midline Diastema Etiology
Numerous etiological factors contributing to the development of midline diastema have been reported
and discussed in the literature. There is no agreement on a single etiological factor[28]. The prevailing view
seems to consider its development as a multifactorial phenomenon .[1,2]
To treat the midline diastema effectively, an accurate diagnosis of the aetiology and an intervention
relevant to the specific aetiology is necessary. Timing of the treatment is important to achieve satisfactory
results.[1,2,28] Most of the researchers do not recommend tooth movement until the eruption of the permanent
canines. But in certain cases, where very large diastemas exist, treatment can be initiated early.
The following are the well established and narrated causes and treatment options for the midline diastema in the
literature.
1.B-Physiological
Physiological diastemata in the definition are considered to be the manifestation of tooth replacement
preparation of maxillae [2, 4] . Studies of the lack of physiological diastema in children and adolescents showed
that this symptom may be an expression of inadequate physical development and requires further general
diagnostics.
Most maxillary midline diastemas in the mixed dentition appear as a consequence of the growth in
width of the jaws in preparation for the eruption of the larger permanent teeth. The maxillary unerupted
permanent canines lie superior and distal to the apices of the lateral incisor roots, and as they erupt they tend to
force the lateral and central incisors towards the midline closing the space. In most cases a diastema of less than
2mm will close spontaneously unless the patient has generalised spacing of the dentition.The incidence of
diastemas varies with the age group and the race studied. Richardson and colleagues found the incidence at age
14 to be 12 per cent in white girls, 17 per cent in white boys, 19 per cent in black girls and 26 per cent in black
boys[10]. Popovich and colleagues found that 83 per cent of patients with a diastema at nine years in the mixed
dentition had no diastema at 16 years.[29]
Besides the physiological diastema incisors are usually fan-arranged – divergently, and because they do
not look very aesthetic – this period, therefore, has been
named as “ugly duckling stage‟‟. In typically developing bite conditions the median diastema is gradually being
closed during the eruption of lateral incisors and permanent canines [2, 11]. Therefore, the incidence of
physiological midline diastema at age of 6 years is 98%, then it decreases to 49% at age of 11, at age of 12–18
years incidence of space between the central incisors is 7% [12]. According
to Edwards [30] diastema of size not exceeding 2 mm is prone to spontaneous closure without
requiring the implementation of the orthodontic appliance therapy. Bennet [31] believes that the treatment may
be indicated if the child does not accept
the appearance or when in the dental arch there is no space for lateral incisors. Space greater than 2 mm may
require surgical intervention within the frenulum tissue [11, 14, 15]. Extreme caution should be taken when
planning the closure of the
diastema during the phase of bite formation. Unnecessary therapeutic intervention using removable
orthodontic appliance can cause root resorption of lateral incisors, and can even stop erupting canines [16]. In
some cases it is advisable to use elements
of fixed orthodontic appliances in order to move and set parallelly the incisors [16]. Many authors believe that
what is difficult is not the treatment for diastema closure, but the prevention of recurrence of this irregularity
[11, 17].
2.B-Abnormal labial fraenum
An abnormal fraenum might be defined as one exhibiting excessive thickness and alveolar attachment
between the maxillary central incisors and apparent continuity with a large incisive papilla (Fig. 01). A large
persistent fraenum has been traditionally associated with midline diastema but the relationship between the two
may have been overstated in the past. Edwards found a strong correlation between an abnormal fraenum,
together with vertical osseous cleft on x-ray and the presence of a midline diastema. [30] Popovich and
colleagues, however, found no such relationship.[32] Bergstrom and colleagues in a longitudinal evaluation of a
group of nine year olds with abnormal fraena revealed no difference in spontaneous closure whether or not a
fraenectomy had been carried out. There appears to be broad consensus, however, that when there is a v-shaped
radiolucency (“notch”) in the crestal bone, on x-ray combined with a largediastema (more than 2mm), and a
thick fleshy fraenum, then a fraenectomy is indicated .[33]
Popovich et al. (1977a,b) argued that in cases with diastema, the hypertrophic frenum continues to
develop more coronally as the alveolar process growths with teeth eruption, because the dentition exercises
minimal or no pressure on the frenum[29,32]. Tait (1924)41 supported that the frenum has no effect on the
maxillary incisors.[34]
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Ceremelo (1953) concluded that the presence of the frenum is not related with the presence or the width of the
midline diastema[35]. Finally, Bergstrom et al. (1973) noted that the probability of long-term spontaneous
diastema closure in patients with an abnormal frenum is the same, regardless of whether or not the frenum had
been surgically excised. Consequently, further research is needed to determinethe cause-effect relationship
between the abnormal labial frenum and the maxillary midline diastema.[33]Miller(1985) recommended that
the frenum should be characterized characterizedas pathologic when it is unusually wide or there is no apparent
zone of attached gingiva along the midline or the interdental papilla shifts when the frenum is extended.
However, evaluating the frenum (normal or pathologic) is sometimes rather difficult, especially in borderline
cases.[36] All clinical data should be assessed in relation to patient‟s age, as well as to other parameters relevant
to the problem.[29,32,35,36]
3.B-Missing maxillary lateral incisors
This can allow maxillary central incisors to drift distally. There are no physiological pressures placed
on these teeth to close together as the canines erupt (Fig. 02a-c) .
The diastemas due to congenital absence of lateral incisors can be treated orthodontically with closure of the
diastema and proper guidance of the canines to the position of the missing lateral incisors and of the posterior
teeth mesially. [33]In such cases, it is obligatory to achieve an Angle II occlusal relation. Selective grinding of
the incisive and palatal canine cusps and of the palatal cusps of the first premolarsand restorations with resin
composite must be performed in order to transform canines and first premolars into lateral incisors and canines,
respectively. This is essential for satisfying patient‟s esthetic requirements, as well as properfunction of the
stomatognathic system[1,2]. Alternative treatment options for the maxillary midline diastema caused by
congenitally missing lateral incisors are to close the diastema and create the appropriate space for placing tooth-
supported restorations or single-tooth implants. [34] The last options are of particular significance in cases of
unilateral tooth absence, mainly because of the difficulties faced during orthodontic treatment, when trying to
achieve dental arch symmetry[35]. The selection of the appropriate treatment option in cases with congenitally
missing lateral incisors, depends on the present malocclusion, on the anterior teeth relationship, on the specific
needs concerning the available space, on the conditionof the adjacent teeth, on the tooth-size relationship and on
the size and shape of the canine.[34,35,36]
The diastemas due to congenital absence of lateral incisors can be treated orthodontically with closure
of the diastema and proper guidance of the canines to the position of the missing lateral incisors and of the
posterior teeth mesially. In such cases, it is obligatory to achieve an Angle II occlusal relation. Selective
grinding of the incisive and palatal canine cusps and of the palatal cusps of the first premolars
and restorations with resin composite must be performed in order to transform canines and first premolars into
lateral incisors and canines, respectively. This is essential for satisfying patient‟s esthetic requirements, as well
as properfunction of the stomatognathic system[1,2,3,4].
The last options are of particular significance in cases of unilateral tooth absence, mainly because of the
difficulties faced during orthodontic treatment, when trying to achieve dental arch symmetry. The selection of
the appropriate treatment option in cases with congenitally missing lateral incisors, depends on the
presentmalocclusion, on the anterior teeth relationship, on the specific needs concerning the available space, on
the condition of the adjacent teeth, on the tooth-size relationship and on the size and shape of the
canine.[1,2,3,4]
4.B-Ectopic maxillary canines
The absence of the canines from their normal position can facilitate distal drift and tilt of the incisors
with space opening and there is the associated lack of the physiological pressures to upright the lateral and
central roots that normally closes the diastema (Fig. 09).
Fig.09: Development of a Diastema as a result of ectopic maxillary canine
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5.B-Tooth size or shape discrepancy
The most commonly presenting of these are small lateral incisors. The Bolton Analysis may be used to
compare tooth sizediscrepancies. This group are the most amenable to restorative and prosthetic solutions.[37]
The associated shape discrepancies most frequently seen are central incisors that are excessively triangular or
have mesial surfaces that are either concave or convex (Fig.10).
Fig.10: Diastema is associated shape discrepancies
The mesiodistal widths of the anterior teeth and the arch width should be measured. These
measurements should be compared with the norms to determine whether it is contributed due to tooth size
discrepancy, check whether all four incisor are small or only the lateral incisor are smaller with normal sized
central incisors .Approximate mesiodistal widths of the anterior teeth and approximate arch widths , both in mm
, are given in tables respectively . If only the lateral incisor is small, the Diastema should be closed
orthodontically by moving the central incisor together reciprocally. Then the lateral incisor position can be
corrected orthodontically and tooth size can be restored by composite build up or placement of crowns over
lateral incisors.[1,2,7,14,30,38]
6.B-Mesio-distal angulation of incisors
a.Root convergence
Distally inclined incisors can produce a diastema with the tooth space positioned towards the incisal
edges of the incisors[2,7]
b.Root divergence
Mesially inclined incisors can result in a coronally positioned contact point and a diastema, which is
more gingivally placed . This is often referred to as the black triangle and is associated with reduced papilla
infill, so that in effect it is a diastema that is closed off at its incisal aspect by contact of adjacent teeth. Burke
and colleagues[39] in a study found that 40 per cent of crowded maxillary incisors can be expected to produce a
black triangular space at the midline after fixed appliance treatment unless something is done to close this space
before appliances are removed and the case considered finished(Fig. 11).There is a high incidence of concave
mesial surfaces in crowded maxillary incisors, which becomes more apparent as the teeth are decrowded
orthodontically (Fig. 12).
Tarnow and colleagues[40] in a study on the effect of the distance from the contact point to the crest of
bone on the presence or absence of an interproximal dental papilla found that:
• when the distance was 5mm or less the papilla was usually present (Fig. 13a)
• when the distance was 6mm the papilla was present 56 per cent of the time (Fig. 13b); and,
• when the distance was 7mmor more the papilla was present 27per cent of the time or less (Fig. 13c).
Fig.11: black triangular space ; Root divergence and mesially inclined incisors
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Fig.12: concave mesial surfaces in maxillary incisors after leveling
a b c
Fig.13a-c: the effect of the distance from the contact point to the crest of bone on the presence or absence of an
interproximal dental papilla
7.B-Inter arch Relationship
When the combined width of the mandibular anterior teeth is very large and the combined mesiodistal
width of the maxillary teeth is less, then the lower arch is well align but it does not relate with the upper
arch[1,2,7]. Thus, labial positioning of the upper anterior with spacing in between upper teeth presents to match
the upper arch with the well aligned lower arch. Such a case would require inter –proximal enamel reduction
from lower anterior teeth or extractions of lower second premolars followed by fixed orthodontic appliances in
both the arches. After the spaces are closed in the lower arch, the maxillary incisors should be retracted. This
would reduce or eliminate the Diastema in the maxillary arch.[41,42]
8.B-Habits
The most frequently implicated habits are thumb, digit or soother sucking. These have a tendency to
procline the maxillary labial segment, which may lead to spacing and diastema in some patients.[1,2,7,41]
Oral habits such as tongue thrusting and finger sucking can be other aetiological factors for the appearance of
the midline diastema.[32,33 ]According to Proffit andFields, tongue position at rest may have a greater impact
on tooth position thantongue pressure, as the tongue only briefly contacts the lingual surface of the anteriorteeth
during thrusting. The tongue pushes the anterior teeth to a forward position,increasing the circumference which
results in spacing [43].An abnormal habit of the tongue can be detected by the tip of the tongue popping out
through the anterior spacing when the patient is asked to swallow. In cases of anterior open bite, the tongue may
be seen thrusting between incisal edges of the maxillary and mandibular incisors. Patients with tongue thrust
often produce a snap sound on swallowing and also have hyperactivity of the orbicularis oris muscle.
An abnormal tongue size is a severe problem which may create difficulties in retaining the
orthodontically corrected midline diastema. Macroglossia can be detected by simple observations.[1,2,41]
The patient can be asked to touch the tip of the nose with his tongue and, if he/sheis able to do that, it is an
indication of an extended tongue . In the same way, if tooth indentations are seen on the lateral borders of the
tongue, it can be an indication of an enlarged tongue In such cases, surgical trimming may have to be
considered in order to attain stability in the dental occlusion.[35]Deleterious habits have to be corrected by using
habit-breaking appliances and by psychological approaches. The use of fixed tongue cribs are found to be
effective in breaking the tongue-thrusting habit.[44]
9.B-Tooth Anomalies and other Pathologic Lesions in the soft or Hard Tissues in the midline
Generally, mesidens is present as a supernumerary tooth in the hard or soft tissue and acts as an
impediment in the eruption of permanent central incisor in their correct position and also approximation of these
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teeth is not possible because of its presence .again any fibrous cystic or bony lesion may also be present
.radiographic assessment with intraoral periapical x-rays and upper occlusal views are recommended. Extraction
of supernumerary tooth should be carried out before commencing orthodontic treatment .surgical excision in the
case of pathological lesion is necessarily done and zinc oxide eugenol dressing for two weeks is placed post
surgical at the site of the surgery. Orthodontic correction should follow the removal of the pathological
cause.[1,2,7,41]An odontogenic keratocyst can appear in the maxilla and can displace teeth, leading to spacing
in the anterior region. A median palatal cyst is another midline structure which is a rare cyst originating from the
epithelium trapped along the line of fusion of the lateral palatal maxillary process during development.[41,45]
Odontomas are benign odontogenic tumours composed of enamel, dentine, cementum and pulp tissue.
Odontomas are the most frequent odontogenic tumours, with an incidence of 22−67% of all maxillary tumours.
They are usually asymptomatic, butoften associated with tooth eruption disturbances. Odontomas can be
presentbetween the roots of erupted maxillary central incisors, preventing contactbetween their crowns and
causing large diastemas. A radiographic examinationof the site will be beneficial in cases of a large diastema to
rule out the presence ofany midline lesions such as odontomas, when the presence of other commonaetiological
factors are not observed. The treatment of choice is surgical removalof the tumour and closure of the midline
diastema using composites, jacket crownsor orthodontic appliances, depending on the size of the diastema . [46]
10.B-Development
A maxillary midline supernumary is a rare cause of midline diastemain children. Permanent maxillary
central incisors can normally erupt with a diastema that will be reduced in size with the eruption of the lateral
incisors and will completely disappear with the eruption of the canines. This happens because each permanent
incisor and canine is 2-3 mm wider than its primary predecessor. Therefore, the maxillary midline diastema is
frequently, not only physiologic, but necessary. If there is no pathological condition related to these specific
teeth or major deviations from normal teeth size, spontaneous closure of the diastema should be considered
certain in most cases. If, however, this does not happen, then intervention by the dentist may be
necessary.[2,10,38,31,44]
11.B-Combinations
Not infrequently a number of the above factors combine in one
patient to produce a diastema.[41]
12.B-Iatrogenic:
rapid maxillary expansion can cause midline diastema due to opening of the intermaxillary
suture.[1,2,3,4,28]Moyers stated that imperfect fusion at the midline of premaxilla is the most common cause of
maxillary midline diastema. The normal radiographic image of the suture is a V-shaped structure(Fig. 6, b).[7]
13.B-Genetic of midline diastema
The genetic nature of midline diastema International literature includes few reports on genetics or
heredity as etiological factors for the development of the maxillary midline diastema.[1,2]Gardiner discusses
the etiology of the persisting midline diastema and notes that there is "almost no limitation concerning
contributing factors. Undoubtedly, hereditary causes are high up the list and we have all seen parents and
offspring with this feature".[22]Schmitt (1982) described eight members of a family who, for more than three
generations, presented a syndrome including bilateral triphalangeal thumbs, radial hypoplasia, hypospadias
(congenital abnormality of the urethra) and maxillary diastema. All family members with the disease had a
midline diastema and the authors concluded, on the basis of the hereditary pattern, that the syndrome follows the
autosomal dominant type. The authors did not discuss the role or the correlation of the maxillary diastema with
the syndrome, nor did they further elaborate on the genetic contribution possibly responsible for the expression
of the dental hereditary feature.[47]
Harris and Johnson (1991) also examined the role of heredity in abnormal dental occlusion. The
authors, in a longitudinal analysis of relatives, investigated both craniometric and occlusal variables. The study
was based on serial evaluations of cephalometric radiographs and dental casts of 30 relatives (4 to 20 years old)
with no previous orthodontic treatment from the Bolton-Brush Growth Studies in Cleveland, Ohio. The aim of
the study was to evaluate the contribution of heredity to a variety of craniofacial, skeletal and occlusal variables.
The authors concluded that craniometric variables are correlated with high heredity values, whereas almost all
occlusal variability is more acquired and less hereditary.[48]
Neville et al. (1997) describe the thyroglossal cyst of the duct as a remnant of the thyroglossal duct
epithelium that normally undergoes atrophy and is eliminated. Occasionally, however, it remains and forms a
cyst. They also report that thyroglossal duct cysts appear in the midline and may develop from the foramen
tongue caecum to the superior fissure. The median palatal cyst is another midline structure, which Neville et al.
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describe as a rare cyst originating from epithelium trapped along the line of fusion of the lateral palatal
maxillary processes during development.[45]
Nainar and Gnanasundaram (1997), in their study of midline diastemas in a South India population
sample, examined 9774 individuals from 13 to 35 years of age in order to determine the consequences and
possible etiological factors of this feature. The relatively increased frequency of familial occurrence led the
authors to propose the presence of a genetic factor contributing to midline diastema expression.[11]
Shashua and Artun (1997) report that genetic predisposition is a probable precondition contributing to midline
diastema development. The authors concluded that the family tree of diastema was one of the only two
important risk factors for diastema relapse. The other factor was diastema size before treatment.[49]
Gass et al. (2003) note that preliminary results from thirty families show a possible genetic basis for this
diastema. More specifically,"heritability" was estimated at 0.32 for the white and 0.04 for the black population.
"Heritability " is defined as the ratio of the total genotypic diversity to the total phenotypic diversity with values
ranging from 0 to 1. Data from family trees suggest a dominant autosomal hereditary type.[50]
14.B-Periodontal Status
The amount of bone support for each tooth should be of special consideration in children with juvenile
periodontitis and adults with periodontal problems. Localized juvenile periodontitis is an aggressive periodontal
disease, which is seen in teenagers. It is characterized by loss of tissue attachment and loss of alveolar bone
around the permanent incisors and first molars. One sees a dentilabial migration of the maxillary incisors as a
result of excessive bone loss forming a midline diastema. [41,51]
The first line of treatment is to control the disease by periodontal therapy like scaling, root planning
and with anti-microbial agents like tetracycline and metrogyl. In most cases, consultation with a periodontitis is
a must[52,53]. A close collaboration between the orthodontist and theperidontist is desirable. Ideally the
treatment of juvenile periodontitis should include correction of systemic condition along with the localized
measures. In advanced stages of the disease, it is difficult to retain the teeth in function but in early stages, the
disease can be eliminated and the dentition can be retained. The only contraindication to orthodontic treatment
for this persistence of gingival inflammation and severe bone loss in spite of adequate phase I periodontal
therapy, which includes preparation of tooth surface, plaque control, antimicrobial agents, and control of
uncomplicated gingivitis. In adult seeking orthodontic closure of anterior spacing, it is assumed that bone
remodeling process may occur more slowly. So, for both teenagers with initial stages of localized juvenile
periodontitis and adult with or without periodontal problems, phase I periodontal therapy procedures are
finished first, preferably by a periodontist. Orthodontic treatment should be started only after the inflammation
of the gingival has reduced to a minimum by the phase I periodontal therapy. [51,53,54,55]
Major occlusal adjustments and periodontal surgical procedures are performed after completion of orthodontic
space closure as firstly , orthodontics may change the shape of periodontium reducing the extend of surgery and
secondly , the removal of supracrestal fibers during surgery will facilitate retention. Generally to correct
pathologic tooth migrations of anterior teeth, a tissue borne removable appliance with a labial wire or light
elastic attached to the hooks embedded in the acrylic at the distal surface of each canine is used[54,55]. These
elastics are engaged below the brackets or buttons on the incisors. this would produce light and intermittent
forces that would intrude as well as retract the anterior teeth closing the diastema .these light and intermittent
forces are ideal for the closure of diastemas created by pathologic migration of anterior teeth .in adult patients,
when there is loss of periodontal attachment, surface area of supported root becomes smaller and the center of
resistance also becomes further. So, for tooth movement light forces with relatively large moments are
needed.[1,2,3,55]
C.TREATMENT OPTIONS
A major problem for the dentist in dealing with the midline diastema is thedecision to intervene or not
to intervene during the early mixed dentition period. Asit is widely stated and presumed that the midline
diastema during the „ugly ducklingstage‟ is a normal phenomenon and is selfcorrecting, it is tempting for the
dentist tosuggest to the parents of the child to wait until the permanent canines erupt.[1,2,3,4,28]Before the
practitioner can determine the optimal treatment, he or she must consider the contributing factors. These
include normal growth and development, toothsize discrepancies, excessive incisor vertical overlap of different
causes, mesiodistal and labiolingual incisor angulation, generalized spacing and pathological conditions. A
carefully developed differential diagnosis allows the practitioner to choose the most effective orthodontic and/or
restorative treatment. Diastemas based on tooth-size discrepancy are most amenable to restorative and prosthetic
solutions. The most appropriate treatment often requires orthodontically closing the midline diastema.Treatment
of diastema varies and it requires correct diagnosis of its etiology, and early intervention relevant to the specific
etiology. Correct diagnoses include radiological and clinical examinations and possibly tooth size
evaluation.[2,3,4]
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No treatment is usually done, if the diastema is physiological/transient as it spontaneously closes after the
eruption of permanent maxillary canines. Spontaneous correction of a childhood diastema is most likely
when its width is not more than 2mm.
Pathological causes like supernumerary teeth, midline soft tissue anomalies can be removed surgically and
spaces are closed orthodontically. Oral habits such as thumb sucking and tongue thrusting should be
corrected before closure of the space.
A.Orthodontic Approach:
It is an error to surgically remove the frenum at an early age and then delay orthodontic treatment in the
hope that the diastema will close spontaneously. If the frenum is removed, while there is still a space between
the central incisors, scar tissue forms between the teeth as healing progresses, and a long delay may result in a
space that is more difficult to close than it was previously.[56,57,58]
It is better to align the teeth before frenectomy. Sliding them together along an arch wire is usually
better than using a closing loop, because loop with any vertical height will touch and irritate the frenum. If the
diastema is small, it is usually possible to bring the central incisors completely together before surgery.If the
space is large and frenal attachment is thick, it may not possible to completely close the space before surgical
intervention. The space should be closed at least partially and the orthodontic movement to bring the teeth
together should be resumed immediately after the frenectomy, so that the teeth are brought together quickly after
the procedure. When this is done, healing occurs with the teeth together and the inevitable post-surgical scar
tissue stabilizes the teeth instead of creating obstacles to final closure of the space.[1,2,3,4,28] (Fig 14 a-h)
a b
c d
e f
12. Maxillary Midline Diastema – Aetiology And Orthodontic Treatment- Clinical Review
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g h
Fig.: 14a-h:
a-e: Case treated by using SWA: pre-traetment before the frenectomy
f-h: post-traetment with permanent bonded retainer
a b
Fig.15 a, b:Aesthetic approach: after the orthodontic treatment (a) the case treated with restorative material (b)
A study by Kerosuo (1995) reports that people with significant anterior crowding or midline diastema
were very frequently considered less intelligent, beautiful andsexually attractive and were perceived to be of a
lower social status in comparison to the same individuals when they had excellent occlusion.[59]Rosenstiel and
Rashid (2002), in an Internet study concerning the opinion of laypeople about anterior teeth esthetics, showed
that conditions such as diastema and midline deviation received the worst ratings. Detailed analysis and
understanding of malocclusion is needed by the orthodontist, so that s/he may successfully treat midlinediastema
for the patients esthetic and functional benefit.[60]According to Attia (1993), if the diastema is due to a
mesiodens, the latter should be extracted and orthodontic treatment should follow immediately in order to
achieve a stable result. If the diastema is due to congenital absence of a lateral incisor, there are two options
following midline diastema closure: mesial canine movement to the lateral incisor position or distal canine
movement and prosthetic restoration of missing lateral incisors (with or without osseointegrated implants) [61].
If the reason for the diastema is peg-shaped laterals (one or both), then, following space closure between central
incisors and with great respect for the midline, the space necessary for the prosthetic restoration of peg laterals is
created. If the diastema is due to hypertrophic frenum, the latter should be surgically excised after space closure
[61,62] . Edwards (1977) describes the surgical technique for frenum excision preserving the interdental papilla
and removing fibrous bundles and interseptalfibers.[30]Sullivan et al. (1996) examined a sample of 35 patients,
with maxillary canines already erupted, presenting diastema ranging from 0.9 to 3 mm. The aim of the study
was to evaluate the stability of diastema closure following the period of retainer use, to investigate any relapse
signs and to examine the relationship between relapse and post-retention changes. The authors found that
measurable relapse of diastema was evident in 12 out of 35 cases.[13]Shashua and Artun (1999)[49], in their
study of 96 patients who were treated orthodontically and had a midline diastema ranging from 0.5 to 5.62 mm,
came up with findings similar to those of Sullivan et al. (1996). The authors found a relapse rate of 49% and
concluded that the only relapse risk factors were pre-treatmentdiastema size and presence of one family member
with a similar condition.[13,49]
A bonded palatal fixed retainer is advisable in the majority of cases to stabilise the result post
treatment. In wider diastemas this retention should be permanent. As with all bonded retainers patients should
be instructed in good oral hygiene, including the use of floss threaders.[63,64,65] . The authors generally
provide patients who have bonded retainers with a removeable Hawley-type retainer to be worn at night for the
first few years. Mulligan in a recent report presents a novel method of reducingretention requirements in these
cases. He moves the apices of the incisors distally in finishing the treatmen[64]t. In this way, he postulates,
larger functional moments are produced when the incisor roots are divergent which help to keep the diastema
closed. To test the stability he removed the archwires for a six-weeks period near theend of treatment. The disto-
incisal edges of the tipped teeth are modified with the use of disks for enhanced aesthetics. This interesting
approach holds promise.[7,63,65]
13. Maxillary Midline Diastema – Aetiology And Orthodontic Treatment- Clinical Review
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B.Esthetic Approach;
1.b.Laboratory Analysis: A functional analysis would need to be done in the diagnostic wax-up, and
eventually the provisional prototypes, to make sure that the new restorations would be compatible with habitual
movements such as those that occur in mastication and speech. The steepness of the interarch relationship in the
area of the cuspids (along with the type of food) determines to a large degree the path of closure during
mastication.[1,2,3,4]
The completed laboratory analysis via the diagnostic equilibration and wax-up provide a great deal of
information:
The number of restorative units needed to optimally eliminate the patient‟s dental midline diastema
.[1,2]
b.The wax-up illustrated how the individual restorations would appear dimensionally and whether an occlusal/
functional scheme could be worked out that would provide proper force management for longevity of the
restorations.[1,2]
c.The wax-up would serve as the prototype design for the direct fabrication of the provisional restorations so
that laboratory approximations could be adjusted and verified in vivo.[1,2]
2.b.Restorative treatment
Patient demand for aesthetic dentistry with minimally invasive procedures has resulted in the extensive
utilization of freehand bonding of composite resin to anterior teeth .[1,2,3,4]
Dental patients are more conscious of their appearances and have raised the importance of the smile
within society as a whole; this impacts full mouth restoration as well as more conservative restorative
procedures that include class IV restorations, veneers and diastema closure.[2]
The diastema presents itself to the dental office on a regular basis. It may be small or large. The papilla
may be long and skinny or blunted. The size will have an effect on what material will be chosen to achieve the
desired results. When dealing with a large space closure, orthodontist may be indicated to allow for a more
esthetic outcome.[1,2]
When the teeth are in proper orthodontic alignment, no preparation of the tooth structure is necessary.
If there is an alignment problem, minor tooth preparation will be necessary to achieve proper arch form.
Composite resin is an ideal material when restoring diastema closure. It is highly polishable, long
lasting and mimics natural tooth structure. It is a conservative alternative to an indirect restoration [1,2] (Fig 14
a, b).
It is important to mention that there are restorative solutions to these cases without orthodontic
intervention.[41,53] However, restorative measures are more likely to be appropriate in adults and are also
subject to on-going maintenance issues. Care must be taken that the emergence profile of any restoration is not
over-contoured creatinghygiene problems. Care must also be taken with the crown width/length ratio.[56,58]
Maxillary midline spacing can also be reduced or temporarily closed with composite resin directly on the
proximal surfaces of teeth adjacent to the space without bonding agent prior to orthodontics. It may then be
removed as tooth movement proceeds. When combined orthodontic-restorative treatment is planned,
collaboration between the orthodontist and the restoring dentist should begin at the diagnostic phase.[1,2,3,4,28]
1. Conclusion
The etiology of midline diastema is a very important factor that has to be taken into consideration before
starting any orthodontic correction.Enviornmental factors as well genetic influences together plays a vital role in
the etiology of midline diastema hence the orthodontist role to evaluate the various important factors and predict
the risk of a developing midline diastema in future generation is valuable for patient diagnosis, treatment and
retention. However, if the diastema is more than 1.8 mm, even after the eruption of lateral incisors, an
orthodontic intervention willbe necessary. A radiographic examination of the site will be beneficial to rule out
anymultifactorial aetiology. To achieve an aesthetic and stable result, it is importantto establish the underlying
cause for the midline diastema. Retention protocolshould depend on the size and the aetiology of the midline
diastema.
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