American association of orthodontist defined interceptive orthodontics is that the part of orthodontic treatment employed to recognize and eliminate the potential irregularities in the developing dentofacial structures
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
Orthodontic Treatment Modalities Done by: Dr. Mohamad Ghazi Kassem
2. Orthodontic Treatment Modalities Preventive orthodontics: Interceptive orthodontics Corrective orthodontics • Removable appliances • Fixed appliances Orthognathic Surgery “Jaw Surgery”
3. Preventive orthodontics Preventive Orthodontics is the action taken to preserve the integrity of what appears to be normal at a specific time. Any procedure that attempt to ward off untoward environmental attacks or anything that would change the normal course of events, e.g. 1. Early connection of proximal caries that might change the arch length 2. Early recognition and elimination of oral habits that might interfere with the normal development of the teeth and jaws 3. Placing of a space maintainer to maintain proper position of contiguous teeth It is defined as the action taken to preserve the integrity of what appears to be a normal occlusion at a specific time.
4. 1960 : Kesling stated that “some case should be referred as early as 3 or 4 years of age and all cases by the age of 8 or 9 years” there by lying the foundation of preventive and interceptive orthodontics. 1977: Begg stated that “proper time to begin the treatment is as the beginning of the variation from the normal, in the process of development of dental apparatus, as possible” 1980: Profit and Ackermann has defined it as a prevention of potential interference with occlusal development.
5. Various Preventive procedures are : 1. Pre-dental procedures 2. Care of deciduous dentition 3. Patient and parents education programs 4. Supernumerary teeth 5. Early loss of deciduous teeth 6. Proximal caries 7. Oral habits 8. Space maintainers
6. 1. Pre-dental procedures: • Proper nutrition of the child. • Proper nursing care of the infant. • Bottle feeding should be discouraged.
7. 2. Care of deciduous dentition: 3. Patient and parent’s education programs: Need of maintaining good oral hygiene should be explained to the patient and the parents. Demonstration of brushing methods and diet counseling etc are also important.
8. 4. Supernumerary teeth: Supernumerary teeth and supplemental teeth can interfere with the eruption of nearby teeth. Presence of mesiodens prevents the two maxillary central incisors from approximating each other. They should be removed at appropriate time.
9. 5.Oral habits: Abnormal oral habits should be recognized and patient should be helped by motivation or by fitting a suitable habit breaking appliance.
10. digit sucking Methods to prevent tongue thrusting Mouth breathing
11. 6.Space maintainers: Premature loss of deciduous teeth can cause drifting of the adjacent teeth into the space. Space maintainers must be inserted in appropriate cases after the loss of teeth, particularly after the loss of deciduous molars in inadequate arches. Fixed Space Maintainers Removable space maintainers
12. Interceptive orthodontics Richardson (1982)
Preventive orthodontics /certified fixed orthodontic courses by Indian dental...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
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
American association of orthodontist defined interceptive orthodontics is that the part of orthodontic treatment employed to recognize and eliminate the potential irregularities in the developing dentofacial structures
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
Orthodontic Treatment Modalities Done by: Dr. Mohamad Ghazi Kassem
2. Orthodontic Treatment Modalities Preventive orthodontics: Interceptive orthodontics Corrective orthodontics • Removable appliances • Fixed appliances Orthognathic Surgery “Jaw Surgery”
3. Preventive orthodontics Preventive Orthodontics is the action taken to preserve the integrity of what appears to be normal at a specific time. Any procedure that attempt to ward off untoward environmental attacks or anything that would change the normal course of events, e.g. 1. Early connection of proximal caries that might change the arch length 2. Early recognition and elimination of oral habits that might interfere with the normal development of the teeth and jaws 3. Placing of a space maintainer to maintain proper position of contiguous teeth It is defined as the action taken to preserve the integrity of what appears to be a normal occlusion at a specific time.
4. 1960 : Kesling stated that “some case should be referred as early as 3 or 4 years of age and all cases by the age of 8 or 9 years” there by lying the foundation of preventive and interceptive orthodontics. 1977: Begg stated that “proper time to begin the treatment is as the beginning of the variation from the normal, in the process of development of dental apparatus, as possible” 1980: Profit and Ackermann has defined it as a prevention of potential interference with occlusal development.
5. Various Preventive procedures are : 1. Pre-dental procedures 2. Care of deciduous dentition 3. Patient and parents education programs 4. Supernumerary teeth 5. Early loss of deciduous teeth 6. Proximal caries 7. Oral habits 8. Space maintainers
6. 1. Pre-dental procedures: • Proper nutrition of the child. • Proper nursing care of the infant. • Bottle feeding should be discouraged.
7. 2. Care of deciduous dentition: 3. Patient and parent’s education programs: Need of maintaining good oral hygiene should be explained to the patient and the parents. Demonstration of brushing methods and diet counseling etc are also important.
8. 4. Supernumerary teeth: Supernumerary teeth and supplemental teeth can interfere with the eruption of nearby teeth. Presence of mesiodens prevents the two maxillary central incisors from approximating each other. They should be removed at appropriate time.
9. 5.Oral habits: Abnormal oral habits should be recognized and patient should be helped by motivation or by fitting a suitable habit breaking appliance.
10. digit sucking Methods to prevent tongue thrusting Mouth breathing
11. 6.Space maintainers: Premature loss of deciduous teeth can cause drifting of the adjacent teeth into the space. Space maintainers must be inserted in appropriate cases after the loss of teeth, particularly after the loss of deciduous molars in inadequate arches. Fixed Space Maintainers Removable space maintainers
12. Interceptive orthodontics Richardson (1982)
Preventive orthodontics /certified fixed orthodontic courses by Indian dental...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
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
Space analysis /certified fixed orthodontic courses by Indian dental academy 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
Modelanalysis /certified fixed orthodontic courses by Indian dental academy 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
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
Mixed dentition analysis2 /certified fixed orthodontic courses by Indian dent...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
Mixed dentition analysis. /certified fixed orthodontic courses by Indian dent...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
Study casts are considered an essential diagnostic aid
in diagnosis and treatment planning.Most of the information obtained by a careful study of the plaster casts serve to delineate more sharply and corroborate the observations made during the oral examinationn
Lecture 3 Facial cosmetic surgery
Maxillofacial Surgery
Dental Students Fifth Year second semester
Al Azhar University Gaza Palestine
Dr. Lama El Banna
https://twitter.com/lama_k_banna
Lecture 1 Facial cosmetic surgery
Maxillofacial Surgery
Dental Students Fifth Year second semester
Al Azhar University Gaza Palestine
Dr. Lama El Banna
https://twitter.com/lama_k_banna
Facial neuropathology Maxillofacial SurgeryLama K Banna
Lecture 4 facial neuropathology
Maxillofacial Surgery
Dental Students Fifth Year second semester
Al Azhar University Gaza Palestine
Dr. Lama El Banna
https://twitter.com/lama_k_banna
Lecture 2 Facial cosmetic surgery
Maxillofacial Surgery
Dental Students Fifth Year second semester
Al Azhar University Gaza Palestine
Dr. Lama El Banna
https://twitter.com/lama_k_banna
Lecture 12 general considerations in treatment of tmdLama K Banna
Maxillofacial Surgery
Dental Students Fifth Year First semester
Lecture Name 12 general considerations in the treatment of TMJ
Al Azhar University Gaza Palestine
Dr. Lama El Banna
Maxillofacial Surgery
Dental Students Fifth Year First semester
Lecture Name TMJ temporomandibular joint
Lecture 10
Al Azhar University Gaza Palestine
Dr. Lama El Banna
https://twitter.com/lama_k_banna
Lecture 11 temporomandibular joint Part 3Lama K Banna
Maxillofacial Surgery
Dental Students Fifth Year First semester
Lecture Name TMJ temporomandibular joint Part 3
Lecture 11
Al Azhar University Gaza Palestine
Dr. Lama El Banna
Maxillofacial Surgery
Dental Students Fifth Year First semester
Lecture Name TMJ anatomy examination 2
Lecture 9
Al Azhar University Gaza Palestine
Dr. Lama El Banna
Lecture 7 correction of dentofacial deformities Part 2Lama K Banna
Maxillofacial Surgery
Dental Students Fifth Year First semester
Lecture Name Correction of dentofacial deformities Part 2
Lecture 7
Al Azhar University Gaza Palestine
Dr. Lama El Banna
Lecture 8 management of patients with orofacial cleftsLama K Banna
Maxillofacial Surgery
Dental Students Fifth Year First semester
Lecture Name management of patients with orofacial clefts
Lecture 8
Al Azhar University Gaza Palestine
Dr. Lama El Banna
Lecture 5 Diagnosis and management of salivary gland disorders Part 2Lama K Banna
Maxillofacial Surgery
Dental Students Fifth Year First semester
Lecture Name Salivary gland 2
Diagnosis and management of salivary gland disorders Part 2
Al Azhar University Gaza Palestine
Dr. Lama El Banna
Lecture 6 correction of dentofacial deformitiesLama K Banna
Maxillofacial Surgery
Dental Students Fifth Year First semester
Lecture Name Correction of dentofacial deformities
Lecture 6
Al Azhar University Gaza Palestine
Dr. Lama El Banna
lecture 4 Diagnosis and management of salivary gland disordersLama K Banna
Maxillofacial Surgery
Dental Students Fifth Year First semester
Lecture Name Salivary gland
Diagnosis and management of salivary gland disorders
Al Azhar University Gaza Palestine
Dr. Lama El Banna
Maxillofacial Surgery 1
Dental Students Fifth Year First semester
Lecture Name maxillofacial trauma Part 3
Al Azhar University Gaza Palestine
Dr. Lama El Banna
Maxillofacial Surgery
Dental Students Fifth Year First semester
Lecture Name maxillofacial trauma part 2
Al Azhar University Gaza Palestine
Dr. Lama El Banna
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
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
MANAGEMENT OF ATRIOVENTRICULAR CONDUCTION BLOCK.pdfJim Jacob Roy
Cardiac conduction defects can occur due to various causes.
Atrioventricular conduction blocks ( AV blocks ) are classified into 3 types.
This document describes the acute management of AV block.
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
- Video recording of this lecture in English language: https://youtu.be/lK81BzxMqdo
- Video recording of this lecture in Arabic language: https://youtu.be/Ve4P0COk9OI
- Link to download the book free: https://nephrotube.blogspot.com/p/nephrotube-nephrology-books.html
- Link to NephroTube website: www.NephroTube.com
- Link to NephroTube social media accounts: https://nephrotube.blogspot.com/p/join-nephrotube-on-social-media.html
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.
3. • Management of space problems associated with
the transitional stages from primary to
permanent dentition is a routine component of
pedodontic practice. The change from primary
dentition to the permanent dentition is a
complex phenomenon, which is composed of a
variety of physiological adaptations of occlusion
during this period.
3
4. • Premature loss of primary molars causes,
without doubt, permanent changes concerning
space and sagittal molar relations, in the
permanent dentition. The changes are due to
drifting of teeth and lack of growth, and such
changes should whenever possible, be
prevented.
4
5. • Space maintenance:
Whenever primary or permanent teeth are
lost prematurely and arch integrity is lost, loss
of space and arch length, perimeter may result.
Migration of primary and / or permanent teeth
can occur and the available space may be
reduced by an amount sufficient to cause some
degree of crowding in the permanent dentition.
5
6. • Determination of arch length adequacy prior
to space maintenance procedure:
The dentist faced with the problem of
maintaining the space after the loss of an
individual primary tooth or the multiple loss of
primary teeth should look beyond the immediate
state of the dentition, think in terms of the
development of the dental arches and the
establishment of a functional occlusion. This is
particularly important during the mixed dentition
period.
6
7. • He should determine the size of the permanent
teeth that are yet to erupt, specifically the teeth
in the dental arch anterior to the first
permanent molars. He should also determine
the amount of mesial movement of the first
permanent molars that will occur after the loss
of the primary molars and the eruption of the
second premolar.
7
8. • Arch length analysis (ALA) are methods by
which orthodontist can estimate and predict
tooth size / jaw size relationship. Early
determination of future crowding has an
important role in diagnosis and treatment
planning in mixed dentition stage. Mixed
dentition analysis (MDA) is helpful in the
prediction whether there is sufficient space for
the unerupted canines and premolars or not.
8
9. • Since mal-aligned and crowded teeth usually
result from lack of space, this analysis is
primarily of space within the arches. Space
analysis requires a comparison between the
amount of space available for the alignment of
the teeth and the amount of space required to
align them properly.
9
10. • Classification:
Numerous methods have been proposed for
arch length analysis. These methods could be
classified as follows:
I. Classification according to the method of
tooth size estimation.
II. Classification according to the method of
arch length estimation.
III. Classification according to the
developmental stage of dentition.
IV. Classification according to the method of
estimation and digitizing.10
11. I. Classification according to the method of
tooth size estimation:
1) Methods, which depend on the
measurements from radiographs.
2) Prediction based upon the correlation
between the mesiodistal dimensions of the
erupted and non erupted teeth.
3) Combination of these methods.
11
12. II. Classification according to the method of
arch length estimation:
1) Conventional methods: These methods do
not include the use of cephalometric
correction or soft tissue modification.
2) Cephalometric correction methods: The
incisor reduction (IR) measurement is either
added or subtracted from the previous
available space obtained with the brass
wire. This will correct any labial or lingual
deviation of the lower incisors from the true
basal bone. e.g. Tweed's analysis.
12
13. 3) Total space analysis: These methods
include the use of cephalometric correction,
soft tissue modification and curve of
occlusion.
13
14. III. Classification according to the
developmental stage of dentition:
Methods used in mixed dentition stage.
Methods used in permanent dentition
stage.
14
15. IV. Classification according to the method of
estimation and digitizing:
A. Computerized arch length analysis:
Arch length analysis methods also
include computerized arch length analysis,
which can be used to determine the
variations from the mean tooth size,
actually set up the teeth, arch form and
treatment plan.
B. Manual measurements and estimation.
15
16. Methods in common use:
1. Nance Analysis:
Nance concluded, as a result of
comprehensive studies, that the length of the
dental arch from the mesial surface of one
mandibular first permanent molar to the
mesial surface of the corresponding tooth on
the opposite side is always shortened during
the transition from the mixed to the
permanent dentition.
16
17. • Nance further observed that in the average
patient's mandibular arch a leeway of 1.7 mm
per side exists between the combined
mesiodistal widths of the primary mandibular
canine and first and second primary molars and
the mesiodistal widths of the corresponding
permanent teeth, the primary teeth being larger.
This difference between the total mesiodistal
widths of the corresponding three primary teeth
in the maxillary arch compared with the three
permanent teeth that succeed them is only 0.9
mm per side.
17
18. • For a mixed dentition, arch length analysis
similar to that advocated by Nance, the
following materials are needed: sharp divider,
a set of periapical radiographs, a millimeter
ruler, a piece of 0.026 inch (0.65mm) brass
wire and a card for recording measurements. A
set of study models is also necessary.
18
19. • The width of the erupted four mandibular
permanent incisors is first measured, from the
stone model. The actual width should be
determined rather than the space the incisors
occupy in the arch. The individual
measurements are recorded. The width of the
unerupted mandibular canines and first and
second premolars on the radiographs should
next be measured.
19
20. • The estimated measurements are then
recorded. This will give an indication of the
space needed to accommodate all of the
permanent teeth anterior to the first permanent
molar. The next step is to determine the
amount of space available for the permanent
teeth, and may be accomplished in the
following manner.
20
21. • A piece of brass ligature wire, contoured to
arch form, is placed on the lower model
extending from the mesial surface of the first
permanent molar on one side of the arch to the
mesial surface of the first permanent molar on
the opposite side. The wire should pass over
the buccal cusps of the posterior teeth and the
incisal edge of the anterior teeth.
21
22. • From this measurement must be subtracted 3.4
mm, which the arch length may be expected to
decrease as a result of the mesial drifting of the
first permanent molars. Thus by comparing the
two measurements, the dentist can predict with
a fair degree of accuracy the adequacy of the
arch circumference.
22
24. 2. Tanaka and Johnston Analysis:
The Tanaka and Johnston method of arch-
length analysis is a variation of Moyers
analysis except that a prediction table is not
needed. The estimated widths in millimeters
of the unerupted canines and premolars
correspond to the 75% level of probability in
Moyers prediction table. The sum of the
widths of the mandibular permanent incisors
is measured and divided by 2.
24
25. • For the lower arch, add 10.5 mm to the result
and for the upper arch, add 11 mm to the result
to obtain the total estimated widths of the
canines and premolars. For example, if the width
of the lower incisors was 23 mm, divide by 2
and add 10.5 mm for the lower arch. The result
is 22 mm compared with 22.2 mm obtained from
Moyers table. The corresponding values for the
maxillary arch are 22.5 turn for the Johnston and
Tanaka analysis and 22.6 from Moyers table.
25
26. • It is then possible to take these teeth mass
predictions, compare them with the total
measured arch length, and obtain any
redundancies or inadequacies in the arch
length.
26
27. 3. Hixon and Oldfather:
They measured the mesiodistal widths of
unerupted bicuspids on the x-ray film. Then
added to them the size of lower permanent
incisors from the casts. They termed the
resultant "the measured value" which is used
to determine the "estimated value" from their
prediction charts.
27
28. 4. Kaplan, Smith and Kenarkf:
They modified Hixon and Oldfather method
by excluding the lower incisors. This method
necessitates only measuring the sum of lower
central incisors and mesiodistal widths of first
and second bicuspids from x-ray film. To
overcome Hixon, oldfather's over-prediction
they have suggested adding 0.3 mm to value
below 20 mm and 0.4 mm to values 20-22 mm
and 0.5 mm to values 23 mm and above.
28
29. 5. Moyer Mixed-Dentition Analysis:
The analysis advocated by Moyers has
numerous advantages. It can be completed in
the mouth as well as on casts, and it may be
used for both arches. The analysis is based on a
correlation of tooth size; one may measure a
tooth or a group of teeth and predict accurately
the size of the other teeth in the same mouth.
29
30. • The mandibular incisors, since they erupt
early in the mixed dentition and may be
measured accurately, have been chosen for
measuring, to predict the size of the upper
canine and premolars from his chart, as well
as the lowers.
30
31. • Space Maintainers:
There are numerous types of space
maintainers. They range from the very simple
to those with numerous bands and wires.
They can be constructed differently and used
in different parts of the mouth.
• Indications:
I. The premature loss of primary molars may
require the placement of a space maintainer
to prevent the migration of the adjacent
teeth, depending upon the teeth present and
the arch length.
31
32. II. When loss of a primary canine occurs, the
dental arch midline may be compromised
and the arch length may be reduced. The
premature loss of primary canines may
therefore require the placement of a space
maintaining appliance to prevent midline
deviation and/or loss of arch length,
perimeter.
III. The premature loss of primary incisors does
not usually require the placement of a
dental appliance for the maintenance of
space because mesial movement of the
adjacent teeth is not generally expected.
32
33. • Contraindications:
A space maintainer is usually not necessary if
there is a sufficient amount of space present to
allow for eruption of permanent tooth/teeth.
A space maintainer may not be recommended
if severe crowding exists, such that space
maintenance is of minimal effect and
subsequent orthodontic intervention is
indicated.
A space maintainer may not be necessary if
the succedaneous tooth will be erupting soon.
33
34. • Requirements of an ideal space maintainer:
1) Maintain mesio-distal and vertical
dimensions of the space.
2) Not interfere with tooth eruption.
3) Allow individual functional movement of
teeth.
4) Not interfere with mesio-distal space
opening through natural growth.
5) Be esthetically pleasing in case of anterior
tooth loss.
34
35. • Factors affecting constructions of space
maintainers:
1. The time factor.
2. Age.
3. Amount of bone covering the unerupted
tooth.
4. Degree of development of permanent
successor.
5. Sequence of the eruption of teeth.
35
36. 1. The time factor:
If space closure is to occur, it will usually
take place during the 6 months period following
extraction. After several years, following
premature extraction unfortunate changes may
occur in the occlusion. Even though space
closure has occurred, it may occasionally be
desirable to construct a space maintainer to aid in
the reestablishment of normal occlusal function
in the area, sometimes it is desirable to construct
an active space maintainer (space regainer) to
regain the lost space prior to holding it for the
eruption of the permanent successor.36
37. 2. Age:
The chronological age is not as important as
the developmental one. The average eruption
dates must not influence decisions regarding
the construction of a space maintainer. There is
too much variation in the eruption times of
teeth. It is not uncommon to observe premolars
erupting at age of 8 years, or retained primary
molars until age 15 years. The dentist must
depend upon x-ray to provide useful
information to when the tooth is going to erupt
instead of the eruption tables.
37
38. 3. Amount of bone covering the unerupted
tooth:
This provides important information
regarding the eruption time. If there is an
amount of bone covering the crown of the
permanent successor, this indicates that still
many months before this tooth is going to
erupt but its bone is destroyed by, for
example, alveolar abscess related to the
primary predecessor, the tooth may erupt
before of its eruption date written in the
eruption table.
38
39. 4. Degree of development of permanent
successor:
It has been proven that the developing tooth
does not move in its crypt until the complete
calcification of the crown and the beginning of
root formation. At the time of extraction of the
deciduous tooth, if the crown of the permanent
successor is not fully formed, there might be a
great chance of complete wound healing with
bone formation, and thus delay the eruption of
the permanent successor up to one year.
39
40. • On the other hand if the extraction of the
deciduous tooth happened after the commence
of root formation of the permanent successor
the tooth might erupt earlier up to 6 months.
40
41. 5. Sequence of the eruption of teeth:
The dentist should observe the relationship
of the developing and erupting teeth to teeth
adjacent to the space created by the premature
loss of primary tooth. For example, if a second
primary molar has been lost prematurely and
the second permanent molar is a head of the
second premolar in eruption, there is a
possibility that the second permanent molar
will exert a strong force on the first permanent
molar causing it to drift mesially and occupy
some of the space required by the second
premolar.
41
42. 6. Delayed eruption of the permanent tooth:
Individual permanent teeth are often,
observed to be delayed in their development,
and consequently in their eruption. It is not
uncommon to observe partially impacted
permanent teeth or a deviation in the eruption
path that will result in abnormally delayed
eruption in case of this type it is usually
necessary to extract the primary tooth,
construct a space maintainer and allow the
permanent tooth to erupt and assume its
normal position.
42