With the incorporation of neodymium magnets, the patient was able to insert and remove the 2-piece maxillary obturator prosthesis, engaging both the anterior and posterior undercuts without difficulty. This resulted in increased retention, stability, and improved speech and deglutition. At follow-up appointments, the patient expressed satisfaction with the prosthesis and gratitude that his chief complaints had been addressed.
journal cub presentation on Bps denture/biofunctional prosthetic systemNAMITHA ANAND
watch video links below for better understanding
https://www.youtube.com/watch?v=_sR2Ip5p9RE
its a series of videos 1-7 beautiful videos explaining the construction of BPS DENTURES - step by step
journal cub presentation on Bps denture/biofunctional prosthetic systemNAMITHA ANAND
watch video links below for better understanding
https://www.youtube.com/watch?v=_sR2Ip5p9RE
its a series of videos 1-7 beautiful videos explaining the construction of BPS DENTURES - step by step
Fabrication of functional complete dentures for edentulous patients who have undergone hemimandibulectomy is a very arduous and demanding endeavor.
The most challenging situation encountered during this procedure is the deviation of the mandible to the resected side. The deviation of the mandible to the resected side is directly proportional to the loss of tissues in the area hemi-mandibulectomy has been performed.
In cases with Cantor and Curtis classes II, III, IV, and V, guide flange prosthesis would be a treatment modality. For guide flange prosthesis to be effective, the sufficient number of posterior teeth that are periodontally sound should be present in the opposite arch.
In patients where reconstruction is not done after resection of the mandible, scar tissue formation occurs over a period of time that stiffens the tissues and worsens prosthetic rehabilitation, leading to compromised treatment planning.
An interim removable partial denture (RPD) addresses patients’ concerns regarding esthetics and function and helps them adjust to the edentulous condition until a more definitive form of treatment can be rendered.
Altered Cast Impression Technique for Fabrication of Maxillary Obturator- Jou...Dr. Prathamesh Fulsundar
An obturator is a maxillofacial prosthesis that is used to close an acquired tissue opening, primarily of the hard palate, and/or a contiguous alveolar or soft tissue structure that has been removed by surgery. (GPT-8)
This clinical report describes the prosthodontic rehabilitation andfabrication of an obturator used for a partially edentulous patient with anacquired unilateral maxillary defect.
The impression was made in 2 steps in a similar manner as the altered castimpression technique.
Precise impression of the resection defect despite trismus was possible, thus providing this patient an accurately fitting obturator prosthesis.
Journal Club On Subepithelial Connective Tissue GraftAssociated with Apicoec...Shilpa Shiv
Journal Club On Subepithelial Connective Tissue GraftAssociated with Apicoectomy andRoot-End Fillings in the Treatment ofDeep Localized Gingival Recession withApex Root Exposure
Overdentures can be either tooth or implant supported. Completely edentulous patients whose economic condition Thwarts them to invest in the expensive implant (number based) treatments should be motivated to have at least a two implant-supported overdenture since the prosthesis offers most of the advantages of conventional tooth-supported overdenture. We report a case of an elderly female patient who was reluctant toward surgery, but with moderate education was treated successfully with a two staged, two implant-supported overdenture using a ball abutment with o ring attachment.
Biofunctional Prosthetic System in AlbaniaQUESTJOURNAL
ABSTRACT: The median age of the population contingent of patients wearing full removable dentures is rising. We are dealing with a situation where jawbones are more and more atrophied. In order to construct an efficient total prosthesis we were based on the Biofunctional System, elaborated by U.Stuttgen. The preparation process of these dentures was built on the principles of Guided Functional Movement. The aim of our study was to construct a full removable prosthesis according to bilateral balanced occlusion with no alterations,interferences,deformities and to compare it to conventional prosthesis in terms of stability, function, achievement of balanced occlusion, strength, mechanical resistance, decubitus, sore and aesthetics. As a study material,we included 245 patients treated by us, who observed in 6 year long period. We divided patients into two groups: in the first one 133 patients treated by using biofunctional prosthesis, and 112 patients were part of the second group treated using conventional dentures. Based on the check up immediately after putting on the dentures and 6 years later, we concluded and compared the results of the prosthesis systems in both groups. As a result, we concluded that biofunctional prosthesis had a high advantage compared to the conventional ones in all terms.
Fabrication of functional complete dentures for edentulous patients who have undergone hemimandibulectomy is a very arduous and demanding endeavor.
The most challenging situation encountered during this procedure is the deviation of the mandible to the resected side. The deviation of the mandible to the resected side is directly proportional to the loss of tissues in the area hemi-mandibulectomy has been performed.
In cases with Cantor and Curtis classes II, III, IV, and V, guide flange prosthesis would be a treatment modality. For guide flange prosthesis to be effective, the sufficient number of posterior teeth that are periodontally sound should be present in the opposite arch.
In patients where reconstruction is not done after resection of the mandible, scar tissue formation occurs over a period of time that stiffens the tissues and worsens prosthetic rehabilitation, leading to compromised treatment planning.
An interim removable partial denture (RPD) addresses patients’ concerns regarding esthetics and function and helps them adjust to the edentulous condition until a more definitive form of treatment can be rendered.
Altered Cast Impression Technique for Fabrication of Maxillary Obturator- Jou...Dr. Prathamesh Fulsundar
An obturator is a maxillofacial prosthesis that is used to close an acquired tissue opening, primarily of the hard palate, and/or a contiguous alveolar or soft tissue structure that has been removed by surgery. (GPT-8)
This clinical report describes the prosthodontic rehabilitation andfabrication of an obturator used for a partially edentulous patient with anacquired unilateral maxillary defect.
The impression was made in 2 steps in a similar manner as the altered castimpression technique.
Precise impression of the resection defect despite trismus was possible, thus providing this patient an accurately fitting obturator prosthesis.
Journal Club On Subepithelial Connective Tissue GraftAssociated with Apicoec...Shilpa Shiv
Journal Club On Subepithelial Connective Tissue GraftAssociated with Apicoectomy andRoot-End Fillings in the Treatment ofDeep Localized Gingival Recession withApex Root Exposure
Overdentures can be either tooth or implant supported. Completely edentulous patients whose economic condition Thwarts them to invest in the expensive implant (number based) treatments should be motivated to have at least a two implant-supported overdenture since the prosthesis offers most of the advantages of conventional tooth-supported overdenture. We report a case of an elderly female patient who was reluctant toward surgery, but with moderate education was treated successfully with a two staged, two implant-supported overdenture using a ball abutment with o ring attachment.
Biofunctional Prosthetic System in AlbaniaQUESTJOURNAL
ABSTRACT: The median age of the population contingent of patients wearing full removable dentures is rising. We are dealing with a situation where jawbones are more and more atrophied. In order to construct an efficient total prosthesis we were based on the Biofunctional System, elaborated by U.Stuttgen. The preparation process of these dentures was built on the principles of Guided Functional Movement. The aim of our study was to construct a full removable prosthesis according to bilateral balanced occlusion with no alterations,interferences,deformities and to compare it to conventional prosthesis in terms of stability, function, achievement of balanced occlusion, strength, mechanical resistance, decubitus, sore and aesthetics. As a study material,we included 245 patients treated by us, who observed in 6 year long period. We divided patients into two groups: in the first one 133 patients treated by using biofunctional prosthesis, and 112 patients were part of the second group treated using conventional dentures. Based on the check up immediately after putting on the dentures and 6 years later, we concluded and compared the results of the prosthesis systems in both groups. As a result, we concluded that biofunctional prosthesis had a high advantage compared to the conventional ones in all terms.
Modern Treatment for Congenitally Missing Teeth : A Multidisciplinary Appro...Abu-Hussein Muhamad
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 incisors using dental implants. Finally, the importance of interdisciplinary team treatment planning is emphasized as a requirement for achieving optimal final esthetics
Prosthodontic rehabilitation of maxillary defect in a patientNishu Priya
Restoration of maxillectomy defects demand varied modifications in prosthesis fabrication, to make them lighter and well-tolerated by the patient.
Literature suggests the use of various retentive aids for the construction of conventional obturator to improve retention and oral function.
Expansion appliances /certified fixed orthodontic courses by Indian dental ac...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.
The socket shield technique at molar sitesNaveed AnJum
The socket-shield technique for avoiding postextraction tissue alteration was first described in 2010. The technique was developed for hopeless teeth in anterior esthetic sites but has not yet been described for molar sites. Managing postextractive ridge changes in the posterior region by prevention or regeneration remains a challenge. The socket shield aims to offset these ridge changes wherever possible, preserving the patient’s residual tissues at immediate implants.
Title: Sense of Smell
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 primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
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
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
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!
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
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.
New Drug Discovery and Development .....NEHA GUPTA
The "New Drug Discovery and Development" process involves the identification, design, testing, and manufacturing of novel pharmaceutical compounds with the aim of introducing new and improved treatments for various medical conditions. This comprehensive endeavor encompasses various stages, including target identification, preclinical studies, clinical trials, regulatory approval, and post-market surveillance. It involves multidisciplinary collaboration among scientists, researchers, clinicians, regulatory experts, and pharmaceutical companies to bring innovative therapies to market and address unmet medical needs.
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.
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
2. Rehabilitation of a patient after a total maxillectomy with
a 2-piece magnetically retained obturator: A clinical
report.
2019
Dr. DHANANJAY SHETH
1ST MDS
DEPARTMENT OF PROSTHODONTICS AND CROWN
AND BRIDGE.
3. The goal of maxillofacial prosthetics is to restore function and esthetics to
patients with maxillofacial defects.
Any palatal defects, no matter how small, can cause difficulties in speech,
mastication, and esthetics.
If the patient has a large defect, fabricating an adequately large obturator may
not be possible because the patient is unable to insert the obturator through a
small oral opening.
If necessary, the prosthesis can be divided into 2 or more parts.
In designing a sectional prosthesis, function and the convenience of insertion
and removal of a large prosthesis needs to be considered.
The location of the contacting surfaces of the prosthesis sections should be
determined by considering ease of fabrication and insertion.
4. The defect undercut should not prevent the insertion of any section, also, the
division of the prosthesis into 2 parts should not compromise esthetics.
A maxillofacial prosthesis should have a straightforward design and be easily
manipulated by the patient.
CLINICAL REPORT
A 67-year-old man with a history of a moderately differentiated invasive
squamous cell carcinoma (SCC) of the nasal cavity involving the left maxillary
sinus and soft palate is presented.
He reported being a former smoker: 2 packs per day for 50 years (100 pack
years).
In February 2012, the patient completed 37 fractions of radiation at an outside
hospital (6700 cGy).
5. In October 2012, the patient complained of persistent drainage from the nasal
cavity, pain in the maxillary gingiva, and a foul smell, crusting, and occasional
blood from the nasal cavity. A biopsy was performed and was positive for
invasive and in situ SCC, moderately differentiated.
In November 2012, a computed tomography (CT) scan showed a 9-mm nodule
along the inferior nasal septum. The following month, the patient underwent a
total maxillectomy.
When this patient presented to the clinic in July 2014, he had difficulty with
speech and deglutition.
His remaining tuberosities consisted of soft tissue only and were incapable of
supporting his current obturator prosthesis.
The prosthesis was lacking in retention and stability
6.
7. The patient’s maxillary defect included a scar band behind his nose that, if
engaged, conflicted with the path of insertion and withdrawal. A 2-piece sectional
prosthesis was designed.
First, an impression was made with a combination of polyvinyl siloxane
impression material and irreversible hydrocolloid . The 2 parts of this impression
were made separately
The polyvinyl siloxane was placed in
the anterior undercut and, once
polymerized, was trimmed, keyed, and
replaced in position.
The irreversible hydrocolloid
impression was then made, and the 2
sections were luted together with
baseplate wax .
The impression was then poured in
Type III gypsum
8. Next, a hollow bulb obturator engaging both undercuts was processed in heat-
cured acrylic resin .
In this state, there was no path of insertion, and the patient was unable to insert
the prosthesis.
To rectify this problem, the anterior portion of the prosthesis was sectioned, and
neodymium magnets were incorporated into the acrylic resin.
To finalize the prosthesis, conventional denture methods including an occlusal
rim, interocclusal record, wax setup, evaluation for esthetics and phonetics, and
denture processing were followed.
The force between two magnet poles is proportional to the strength of each pole
and inversely proportional to the square of the distance between the
poles.”Therefore, when each obturator magnets was in the magnetic field of the
other, the prosthesis could glide easily into place.
9.
10. When a patient undergoes radical maxillary surgery, it frequently creates a
situation in which a unitary structure of a maxillary denture and obturator is too
large to be inserted orally.
In such patients, a 2-piece sectional prosthesis should be considered. Structures
within the residual maxilla and the acquired defect must be evaluated for
prosthesis retention.
Direct retention and indirect retention are of paramount importance. If the
remaining maxillary segment is edentulous, securing retention for the prosthesis
is more difficult than in a dentate patient.
The retentive capabilities of the residual maxillary segment must be evaluated
by using the same factors that contribute to the acceptable retention of a
conventional complete denture including the physical properties of adhesion,
cohesion, atmospheric pressure, and interfacial surface tension.
11. Anterior extension of the obturator provides some resistance to vertical
displacement of the anterior portion of the prosthesis.
This extension competes for insertion and removal with the extension over the
soft palate. It is therefore necessary to construct the prosthesis as 2 separate
parts and assemble them intraorally.
In this report, the anterior segment was small. The patient was given detailed
instructions on how to insert and remove the sections of the prosthesis so as not
to aspirate or swallow the small segment.
The patient placed the small segment behind his nose and then inserted the
larger segment to engage the magnets. For removal, he leaned forward and
removed the larger segment followed by the smaller one.
Once assembled, dislodgement of the anterior segment was not a concern as
there was physically no room for displacement once the larger segment was in
place.
12. Magnets have been used for the retention, maintenance, and stabilization of
maxillofacial prostheses.
A technique that included magnets between an obturator and maxillary denture
was presented in 1966 by Boucher and Heupel.
In 1970, Chalian and Barnett introduced a technique for constructing a hollow
obturator by using an autopolymerizing acryli cresin.
Robinson10 used horse shoe magnets to retain a maxillary denture and
obturator for a patient with a complete maxillectomy.
Nadeau used magnets to improve the retention of the definitive obturator and
facial prosthesis.
Magnets provide positive locking potential and, once in position, provide
consistent retentive qualities. Magnet size and diameter can be selected
according to the size of the defect and prosthesis.
13. SUMMARY
With the incorporation of neodymium magnets, the patient was able to insert and
remove the prosthesis ,which included the engagement of the anterior and
posterior undercuts without difficulty.
The ability to engage both undercuts resulted in increased retention and stability
as well as improved speech and deglutition .
This patient continued to be followed up and, at each
recall appointment, expressed his satisfaction with his
prosthesis and extreme gratitude that his chief
complaint had been addressed
14. REFERENCES
1. Aramany MA. A history of prosthetic management of cleft palate: pare to Suersen. Cleft
Palate J 1971;8:415.
2. Chalian VA, Drane JB, Standish SM. Maxillofacial prosthetics e multidisciplinary practice.
Baltimore: The Williams & Wilkins Company; 1972. p. 121-57.
3. Desjardins RP. Obturator prosthesis design for acquired maxillary defects. J Prosthet Dent
1978;39:424-35.
4. Sasaki H, Kinouchi Y, Eng D, Tsutsui H, Yoshida Y, Karv M, et al. Sectional prostheses
Connected by Simarian Cobalt Magnets. J Prosthet Dent 1984;52: 556-8.
5. Nadeu J. Maxillofacial prosthetics with magnetic stabilizers. J Prosthet Dent 1956;6:114-9.
6. Spinney LB. A Textbook of Physics. New York: The Macmillan Company; 1947. p. 299-315.
7. Javid N. The use of magnets in a maxillofacial prosthesis. J Prosthet Dent
1971;25:33441.
8. Sinha V, Bhowate RR, Raizada RM, Jain SKT, Chaturvedi VN. Placement of prosthesis
after total maxillectomy in edentulous patient. Indian J Otolaryngol Head Neck Surg
1999;52:104.
9. Walter JD. Anchor attachments used as locking devices in two-part removable prostheses.
J Prosthet Dent 1975;33:628-32.
10. Robinson JE. Magnets for retention of a sectional intraoral prosthesis. J Prosthet Dent
1963;13:1167-71.
11. Boucher L, Heupel E. Prosthetic restoration of a maxilla and associated structures. J
Prosthet Dent 1966;16:154.