Model Question Growth And Development Paper 1 Diagnosis and treatment planning Essays Group 1 No. 1. Question Marks What is current status of genomic hypothesis in human growth and development? Outline the recently introduced changes in functional matrix hypothesis. Genomic Hypothesis FMH - Revisited – part 3 L.Moss Epigenetic dichotomy 3 AJODO – 1997, Melvin The Genomic Thesis The Biologic Basis for Genomic Thesis Critical Definition Classification of Causation Recently Introduced Changes Histological Background Melvin L.Moss – original article – 1960 ‘ Functional Matrix Hypothesis ‘ Classic statement – 1931 Functional cranial component Skeletal unit Micro Macro Functional Matrix Periosteal Functional Capsular Matrix Functioning spaces Contribution of BOSMA Orofacial capsule FMA – Revisited and Recently Introduced Changes Mainly 2 topics 1) Cellular mechanotransduction 2) Biologic Network Theory - Role of Mechanotransduction 1 2 2 2 1 1 1 Constraints a. Methodologic b. Hierarchial Procedure Mechanoreception Mechanotransduction Unique properties of osseous mechanotransduction Mechanotransductive process Ionic Mechanical Role of Osseous Connected Cellular Network Formation and structure of CCN Attributes of Skeletal CCN The role of periosteal functional matrix Mechanotransduction A Tentative Synthesis Genomic Thesis ( Brief ) The Epigenetic Antithesis and the Resolving Synthesis Definition Mechanism The epigenetic antithesis Craniofacial epigenetic Epigenetic process and mechanism Loading Extracellular matrix deformation Cell shape changes 2. A Resolving hypothesis Complexity and organization Discuss in detail formation of palate. Enumerate the etiological factors responsible for cleft palate. Quote one study on this subject. Definition of cleft Background Formation of palate Timing and formation Developmental disturbances Etiological factors Environmental factors Genetics Teratogens Others Study - Charbora and Harovitz 1974 1 1 1 3 1 2 2 3 3 2 2 2 2 2 3) Servosystem theory of growth in relation to dentofacial orthopedics Introduction Cybernetic language ( transfer function) Various component of servosystem Growth of maxilla and mandible as explained by servosystem Development of malocclusion according to servosystem theory Action of appliances bases an Servosystem theory Clinical implication and drawback 2 3 3 3 3 3 3 4. Discuss the Growth of the jaw in relation to hereditary and congenital factors 1 Introduction 5 stages of development of embryo 3 Growth and development Maxilla Palate Mandible Alveolar bone 1 Factors Von limborgh’s classification 1. intrinsic genetic factor 1 2. local epigenetic factor 1 3. general epigenetic factor 1 4. local environmental factor 1 5. general environmental factor 1 Epigenetic By Profitt & Petrovic Individual Factors 2 - Genetic and hereditary 2 - Hormonal factors 2 - Neurotrophism - Function 2 - Enviromental – local - general - miscellanous 2 genetic factors hormonal factors 5) Discuss in detail the post natal growth of mandible introduction 1 brief of prenatal growth post natal growth types of ossification intramembranous endochondral clinical significance 1 1 2 1 1 1 1 2 mechanism of bone growth anatomy growth timing growth in width growth in length main sites condylar cartilage posterior border of rami alveolar ridges current concepts factors affecting growth systemic local anomalies mandible age changes of mandible Factors affecting development of normal occlusion ,concept of attritional occlusion Introduction 6. 2 2 2 1 1 1 Factors of normal occlusion 2 Process of attritional occlusion in stone age man 2 Attritional occlusion in deciduous dentition 2 Attritional occlusion in mixed dentition 2 Attritional occlusion in permanent dentition 2 Advanced attrition in stone age man 2 Effect of attrition of the evolution of human teeth 2 Attrition occlusion and the future of dentistry. 2 7. 8. Development of occlusion from birth to 18 yrs of age Introduction 2 History 2 Stages of development of occlusion 2 Transient malocclusion 2 Discuss role of 3D CBCT in orthodontic diagnosis and treatment planning and write a note about merits and demerits Introduction 1 1 Conventional CT scan Types limitations CBCT Different system of CBCT 2 2 Uses Missing teeth Impacted teeth Root Root fractures TMJ and condylar image Cleft palate Mini implant Assessment of treatment outcomes Superimposition of digital modules and 3D photograph 2 3D skeletal view and 3D dentition 2 Alveolar ridge shape and volume 2 Sinuses and airway 1 Facial analysis 1 Facial modeling and therapeutic application 1 Advantages and disadvantages 1 2 1 9. 1 Conclusion Discuss digital cephalometry and its importance. Digital cephalometric radiograph Introduction 2 Digital cephalometric images 2 Acquisition of digital cephalometric images Storage phosphor system Charge coupled device detector Indirect system 2 Image diagnostic quality Resolution Noise Advantages and disadvantages Time saving Dark room facility Patient exposure Storage consideration Image compressor Teleradiology 3 1 1 1 1 2 2 2 Group 2 1. 1. Define bonding? What are the various procedures and recent innovations involved in bonding. Definition 1 Steps 2 isolation Etching 2 Primer application 2 Adhesive curing 2 Methods 2 Materials 2 Advantages 2 Self etching primers 3 Bonding over different surfaces 2 2. Describe in detail the various local and general factors involved in the causation of malocclusion Introduction ClassificationGENERAL FACTORS Heredity Congenital Environment prenatal postnatal Predisposing metabolic climatic and infectious disease Abnormal pressure habits and functional aberrations—Thumb sucking, Tongue thrust, speech defects etc Dietary problems Posture Trauma and accidents LOCAL FACTORS: 1. Anomalies of number a. Supernumerary teeth b. Missing teeth 2. Anomalies of tooth size 3. Anomalies of tooth shape 4. Abnormal labial frenum 5. Premature loss 6. Prolonged retention of deciduous teeth 1 8 11 7. Delayed eruption of permanent teeth 8. Abnormal eruptive path 9. Ankylosis 10. Dental caries 11. Improper dental restorations 3. Enumerate the various aspects that have caused a paradigm shift in the importance of soft tissue in diagnosis and treatment planning. Introduction Soft tissue analysis Clinical examination Cephalometric analysis Clinical examination Natural head position Centric relation First tooth contact Frontal examination Outline form Facial level Midline alignment Facial 3rd Lower 1/3rd Upper and lower lip length Incisor to relaxed upper lip Interlabial gap Closed lip position Smile Lip position Digital view Nasolabial angle Maxillary sulcus contour Mandibular sulcus contour Orbital rim Nasal projection Throat length and contour Cephalometric analysis E line H line S line Soft tissue analysis Mesh analysis Influence of growth related changes to soft tissue 1 2 2 2 3 3 2 1 2 Nasal growth Lip growth Chin growth Soft tissue prediction based on Tooth movement Skeletal changes Maxilla Mandible 4.Discuss in detail etiology and management of transverse discrepancies with RME 5. Introduction etiology of transverse discrepancies ndications for RME contraindications of RME maxillary expansion appliances designs of various expansion appliances experimental & clinical studies in RME expansion appliance activation schedules force application and residual loads effects of RME on the maxillary complex effects of the RME on adjacent facial structures RME and its applications surgical midpalatal splitting effects of RME on -palatal mucoperiosteum, -periodontal tissue -root resortion and pulp retention and relapse Conclusion Discuss the normal functions of stomatognathic system Introduction structures of the stomatognathic system - jaw bone - teeth - tongue - musculature - valve of orofacial area - TMJ functions of stomatognathic system trajectories of force mastication deglutition types of swallow 2 1 2 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 2 2 3 phases of swallow respiration speech TMJ movements 6. 3 3 2 3 Discuss the various malfunctions of the stomatognathic system Introduction normal functions of the stomatognathic system abnormal functions of the stomatognathic system Trajectories of force mastication deglutition respiration speech TMJ movement 2 2 1 3 3 3 3 3 Short Notes Group 1 1) 2) 3) Wetzel s grid introduction 1946, Normal C. Wetzel purpose of the grid mechanism of the grid uses Primary and secondary cartilages introduction Growth at primary cartilage Examples growth at secondary cartilage examples primary versus secondary cartilage Role of vitamin A in growth introduction source function dietary requirements deficiency manifestation hypervitaminosis 2 3 3 2 2 3 3 2 1 1 2 2 2 2 4) 5) 6) 7) 8) Counterpart theory of growth introduction Enlow’s principles counterpart principle v principle counterpart principle significance in maxilla and mandible middle cranial fossa anterior cranial fossa ethmomaxillary region vertical lengthening of nasomaxillary complex Logarithmic growth of mandible introduction Melvin moss formula Mandibular changes Rotation of spiral with age Growth rotations Introduction internal rotation – Bjork,Skinner matrix rotation intramatrix rotation External rotation – Profitt 7 structural signs of growth rotation Forward rotation 3 ways Backward rotation 2 ways Growth indicators Introduction indicators hand wrist radiograph cervical vertebrae maturation indicator mandibular canine calcification sign lower 3rd molar development frontal sinus midpalatal suture Rickett’s growth prediction introduction 2 2 2 1 1 1 1 1 3 3 3 1 3 1 1 2 2 1 2 2 1 2 1 1 1 9) 1 2 2 2 2 mental protuberance point EVA curve A,B,C Arc of mandibular growth Prediction Cephalocaudal Gradient of Growth Introduction Fetal Life Third month Time of birth Axis of Growth Pattern of Growth 1 1 2 2 2 2 Group 2 1. 2. 3. 4. 5. Error management in clinical photography in orthodontic office Introduction Importance Analysis Record Requirements Errors and its management Discuss the working principle of single lens reflex camera Introduction Parts of a camera Types of camera Mechanism of SLR Self correcting malocclusion in mixed dentition Introduction Types of self correcting malocclusion - Anterior deepbite - Crowding - Ugly duckling stage - Initial end on relationship Post adolescent changes of facial tissues Changes in facial soft tissues Changes in alignment and occlusion Facial growth in adults. Studies Concept of functional occlusion 1 1 2 2 2 2 1 3 3 3 2 2 2 2 2 3 3 2 2 6. 7. 8. Introduction Functional occlusion Movements CR and CO Functional occlusion for orthodontics Role of equilibration Basic concepts of functional occlusion Diagnosis and treatment planning 1 1 1 2 1 1 1 2 Equilibrium theory of development of dentition Introduction Primary factors in equilibrium Secondary factors in equilibrium 2 4 4 Relevance of stone age mans dentition in contemporary orthodontics. Introduction - Attritional occlusion in deciduous dentition - Attritional occlusion in mixed dentition - Attritional occlusion in permanent dentition 2½ 2½ 2½ 2½ Late incisor crowding and its clinical management Introduction Causes Management 2 4 4 Group 3 1. 2. Mc Namara’s analysis Reference Sample population Relating the maxilla to cranial base Soft tissue evaluation Hard tissue evaluation Relating mandible to midface Relating mandible to midfacial and upper facial structure Relating the upper incisor to maxilla Relating the lower incisor to mandible Airway analysis Beta Angle 1 1 2 2 1 1 1 1 Reference Introduction Landmarks Study sample Result Advantages and disadvantages Conclusion 1 1 1 1 2 2 2 3.Surgically assisted rapid palatal expansion 5. 6. Introduction Indication Patient selection Appliance Surgical technique Retention ,stability and relapse Limitations , risks, complications Conclusion 4. HYRAX APPLIANCE Introduction Types Indications Amount of expansion possible Effect on sutures Electromyography Introduction - definition - principle electromyographic technique - electrodes needle electrode surface electrode Electromyography in orthodontics - Electromyographic activity in cl 2 malocclusion - EMG findings in functional appliance - EMG studies in cl 3 subjects - EMG during swallowing - Effect of pain from orthodontic treatment on EMG activity - EMG activity in cleft lip and palate patients Mastication Introduction 1 1 1 3 2 1 1 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 2 7. 2 1 1 1 1 1 1 Dynamic positions of the mandible 8. muscles of mastication preparatory phase food contact the crushing phase tooth contact grinding phase centric occlusion introduction postural resting position centric relation initial contact centric occlusion most retruded position most protruded position habitual resting position habitual occlusion position 2 1 1 1 1 1 1 1 1 Functional analysis - clinical importance of functional analysis assessment of mandibular position as determined by musculature postural rest position interocclusal clearance path of closure 1 1 examination of TMJ and its functions symptoms of TMJ dysfunction muscle disorders joint sounds examination of TMJ related structures muscles lateral and protrusive movements 1 1 - examination of tongue and its functions tongue –size ,shape tongue-posture tongue-function-swallowing examination of respiratory function nasal or mouth breathing examination methods 1 1 1 - examination of lips lip competency lip size lip biting 1 - Speech analysis Dental and occlusal examination Centric relation contacts Clinical significance of occlusal examinations 1 1 9. Postural rest position 2 2+1 10. Introduction Method of recording postural rest position - Patient seating - Head position - Methods of bringing mandible to rest position - Command method-phonetic method - Other command methods - Non command method - Combined method Oral speculum (A.M.SCHWARTZ) Registration of postural rest position - Direct intraoral method - Direct extraoral method - Indirect extraoral method Cephalometry EMG Cinefluorography Kinesiography Theory of tooth eruption 2 2 1 1 1 1 1 1 Pulp theory Vascular theory Root elongation theory Alveolar bone growth Periodontal ligament theory Genetic input Hydrostatic pressure Follicles theory. 2 2+1 Group 4 1. 2. 3. 4. 5. 6. 7. Paperless office concept Introduction Academic application(clinical) 5 5 Contribution of computers to overall efficiency and practice economics. Introduction Academic application Clinical application Graphic application Research application 2 2 2 2 2 Advanced craniofacial imaging Introduction Basic principle Various types Indication Limiting factors 2 2 2 2 2 Recent advances in CT imaging and lasers Introduction Basic principle Indication Limiting factors 2½ 2½ 2½ 2½ TMJ imaging Introduction Basic principle Selection criteria Advantage and disadvantage 3-D cephalometrics Introduction Various software Factors before purchase software Video imaging Introduction Advantage Types 2½ 2½ 2½ 2½ 2 4 4 2 4 4 8. 9. Application of digital radiograph in orthodontics Introduction Various application Advantage disadvantage Prediction imaging Prediction imaging/surgical treatment objectives Introduction Envelope of discrepancy Methods Cephalometric prediction Model prediction Photo cephalometric Computer prediction Video cephalometry 3D simulation Conclusion 2 3 3 2 1 1 1 1 1 1 1 1 1 1 Group 5 1. 2. 3. Self etching primers Introduction Advantages over conventional etching Mechanism of bonding Bond strength Studies on SEPS 2 2 3 1 2 Indirect bonding Introduction Various techniques Advantages Disadvantages Application in lingual orthodontics 1 3 2 2 2 Acid etching Introduction Purpose Types Etching of enamel 2 2 2 2 2 Etching of enamel Classification of adhesives Define adhesives Classification bases on various generations(1to3) Generations 4 and 5 Generations 6 and 7 APC brackets Introduction Description Advantages Related studies Bonding on different surfaces Introduction Bonding on amalgam Bonding on ceramic Bonding on metals 4. 5 6 1 3 3 3 1 3 3 3 1 3 3 3 Group 6 1. Drawbacks of Angle’s classification Considered anteroposterior relationship, not vertical & transverse. First permanent molars are not fixed points. Cannot be applied if first molars missing. Cannot be applied to deciduous dentition. No differentiation between skeletal & dental malocclusion. Classification does not highlight etiology. 2 2 2 2 1 1 2. Role of drugs in etiology of malocclusion Introduction Prenatal Postnatal 1 4 4 3. Genetics of cleft lip and palate Introduction Genes causing orofacial cleft syndromes T-box transcription factor-22 Poliovirus receptor like-1 Interferon regulatory factor-6 Candidate genes or loci for non-syndromic cleft lip and palate 2 2 1 Transforming growth factor-alpha Drosophila msh homeo box homolog-1 5,10-Methylenetetrahydrofolate reductase Transforming growth factor beta-3 Other genes and loci Environmental factors Smoking Alcohol use Use of folic acid and multivitamins Conclusion 4. Hormonal role in etiology of malocclusion Introduction • Prenatal • Postnatal 1 1 1 1 1 2 4 4 5. Upper airway constriction and its effects on malocclusion conclusion history upper airway structure and respiratory mechanics causes of upper airway constriction sequelae to respiratory obstruction investigations role of orthodontists 1 2 5 1 4 1 Paper 2 – Clinical Orthodontics and Mechanotherapy Essays Group 1 1. Discuss in details the management of open bite Introduction Definition of open bite Incidence Classification by various authors Etiology of open bite Epigenetic factors Environmental factors Diagnostic criteria Clinical features Skeletal Dentoalveolar Cephalometric Management Etiologic consideration Growth/age Esthetic consideration Functional consideration Clinical consideration Treatment plan Interceptive Functional Orthopedic orthodontic corrective Surgical Orthodontic Treatment modalities according to etiology Digital sucking Tongue thrusting Macroglossia Airway obstruction Extrusion of incisor MEAW Correction of skeletal open bite 1 1 1 1 1 2 1 2. According to growth status Functional orthopedics Extraction Second molar First molar Premolar Biomechanics of open bite correction Magnets Skeletal anchorage system Retention and stability Discuss in detail the management of deep bite Introduction Definition Terminologies Incidence Classification Etiological consideration Diagnostic criteria Clinical Features Cephalometric Orthodontic Treatment strategies Surgical Functional orthodontic Extrusion of posterior teeth Flaring of anterior teeth Intrusion of incisor Treatment plan consideration Soft tissue consideration Crown gingival relation Occlusal plane consideration Extrusion of posterior teeth Different mechanics Intrusion arch biomechanics Magnitude of force and different intrusion mechanics Point of force application Intrusion arches Others 3 1 1 2 2 2 1 1 1 2 2 1 1 1 1 1 1 2 1 3. Anchorage control Clinical consideration for intrusion Surgical management Stability and retention Early management of class III malocclusion Introduction Definition Incidence Etiology Components of Class III Classification of Class III Indications and contraindication of Early Class 3 Treatment Differentiation of Pseudo and true class III Management of pseudo Class 3 Treatment of skeletal Class3 malocclusion Treatment in Deciduous dentition Mixed dentition Permanent dentition 4 Maxillary deficiency RME Face mask Mandibular excess Chin cup therapy Tandem traction bow appliances Appliances Magnet in Class3 management Design and consideration of anchorage system Retention and stability 1 1 2 1 1 1 1 1 1 3 2 1 Explain in detail about frictionless mechanics; add a note as the biomechanics of t-loop. Introduction- frictionless mechanics Brief overview Advantage and disadvantage Indications and contraindications 1 2 2 2 5 6 T loop introduction Anchorage consideration Group A Group B Group C T-loop design Biomechanics of t-loops Continuous T loop Biomechanics of headgear 2 Introduction Component of head gear Classification Selection Indication C Res of maxilla, Max dentition, tooth Headgear biomechanics 2 3 3 3 3 3 3 1 1 1 3 3 2 What is friction? What are the types of friction? Explain in detail the various factors affecting friction in orthodontic mechanics Definition Laws Types Static Dynamic Factors affecting friction Mechanics Advantages disadvantages 7. What is preventive orthodontics? Write in detail about the various procedures involved in preventive orthodontics. Definition Caries control Extn of supernumerary teeth Eliminating occlusal interference Management of ankylosed tooth Abnormal frenal attachments oral habits check up 2 3 3 3 3 3 1.5 1.5 2 2 2 2 2 2 2 space maintainer removable fixed advantages disadvantages 2 2 2 2 8. What is interceptive orthodontics? Write in detail about the various procedures involved in interceptive orthodontics. Definition Serial extraction Correction of developing cross bite 1 3 2 2 Control of abnormal habits 3 9. Space regaining Muscle exercises 3 3 Interception of skeletal malrelation Removal of soft tissue or bony barrier to enable eruption of teeth Discuss the principle and techniques of using fixed functional appliances for advancement of the mandible in skeletal and dental class II problems, add a note on their utility over non fixed functional appliances Introduction Definition History Principles of using fixed functional appliances - Push force appliances - Pull force appliances - Produces head gear effect-on maxillary dentition, intrusive force on molars. - Force delivery or force elimination - Growth utilization - Linguo facial screening, equilibrium theory of tooth positions 3 1 1 1 1 1 1 1 1 1 1 - Bite jumping principle - Incorporation of lingual crown torque in lower arch Technique of fixed functional appliances - Appliance producing pushing force Rigid appliance I. Herbst appliance II. MPA Flexible appliances I. Jasper jumper - Appliances producing pull force Saif spring ,etc Note on advantages of fixed functional appliances over non fixed appliance - Less patient cooperation - Design to be used for 24 hrs a day - Orthopedic versus dentoalveolar correction - Smaller in size permitting better adaptation to mastication ,speech, etc - Duration of treatment -less in fixed functional - Treatment can be done in end phase of growth 10. Discuss orthopaedic forces in the treatment for developing class II and class III malocclusions. types of skeletal disharmony and orthopaedic forces Treatment of malocclusions by orthopaedic forces - Cervical head gear With outer bow at a lower level With outer bow at a higher level - Occipital head gear Outer bow to C res Outer bow to C res - Combipull headgear Outer bow above C res Below C res Outer bow through C res - Activator Anteroposterior effects Vertical effects - Bionators Effects of bionators - Frankel II - Twin block appliances - Fixed functional appliances Orthopedic forces- Sagittal changes & vertical changes Herbst appliance MARA-jasper jumper 1 1 1 1 1 1 1 1 1 1 1 1½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ I. - MPA-mand corrector Eureka spring forces etc Treatment of cl III malocclusion by orthopedic forces Orthopedic face mask Delaire face mask Petit face mask Sagittal changes FRIII Effects of appliances Chin cup Vertical pull chin cups Forces passing through condyles Occipital pull chin cups i. Forces passed below condyle ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ Cl III activator Biofrankel III Reverse twin block Cl III bionator MAD 3 appliance TTBA appliance Jasper jumper Chumpo jumper ½ ½ ½ ½ ½ ½ ½ ½ 11. Discuss in detail the functional and cephalometric criteria for functional appliance treatment i. ii. iii. iv. i. ii. iii. i. ii. Functional criteria (1) Determination of rest position of mandible and interposed freeway space or interocclusal clearance Assessment of rest position 1 Phonetic method Command method Non command method Combined method Evaluation of path of closure 1 Evaluation of TMJ and condylar movements 1 Clinical examination Auscultation 1 Palpation 1 Functional analysis Evaluation of swallowing function 1 Examination of tongue 1 Tongue function Tongue posture Size of tongue Examination of lips 1 Respiration 1 Speech assessment 1 Cephalometric criteria 1+1 Analysis of facial skeleton Saddle angle Articular angle Gonial angle Facial height i. Anterior facial ht ii. Post facial ht Cranial base length Ant cranial base length Post cranial length Analysis of jaw bases 1+1 SNA angle SNB angle Basal plane angle Inclination angle Rotation of jaw bases 1 Linear measurements of jaw bases Extent of mandibular base Extent of maxillary base 1+1 Length of ascending ramus - Dentoalveolar analysis Axial inclination of incisors i. Upper incisor ii. Lower incisor 12. 13. Cephalometric analysis of tongue posture 1 How will you manage a child with bilateral cleft lip and palate and its short comings Introduction Classification - Davis&Ritchi’s - Veau’s - Anderson - LASHAM - Kernahans striped Y Etiological factors Risk factors Guidelines by Krozwer Time for orthodontic intervention Management: - Team of doctors - Treatment figure Presurgical orthopaedics Lip closure Palate closure Speech therapy Early orthodontics Alveolar grafting Comprehensive orthodontics Pharyngeal flap surgery Fixed prosthodontics Orthognathic surgery Discuss the developmental anomalies occurring due to first pharyngeal arch defect? Introduction - Pharyngeal arches - Formation of germ layer - Formation of neural tube 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 2 1 2 1 - 14. 15. Development of pharyngeal arches Structures derived from first pharyngeal arch Developmental defects due to defects in the first pharyngeal arch i. Ectodermal groove ii. Endodermal pouch iii. Skeleton iv. Artery v. Muscle vi. Nerve Describe in detail about the development of palate and its anomalies development of palate - components for development of secondary palate two lateral maxillary palatal shelves primary palate - transformation in the position of palatal shelves - mechanism for elevation of palatal shelves - relation of tongue - fissure of palatal shelves - ossification at sutures - muscle development anomalies - Epstein pearls - Bohn’s nodules - Cleft palate - Torus palatine Recent advances in biology of tooth movement Introduction Bone remodeling - Frontal resorption - Undermining resorption Transmission of the mechanical strain to bone cells - Streaming potentials - Strain sensitive ion channels - Extracellular matrix and the cytoskeleton Translation of the mechanical strain within the cell into a genetic response - Signaling molecules in orthodontic tooth movement cAMP pathway 1 2 4 4 6 2 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 3 1 16. Phosphoinositol dual signaling system Arachidonic acid metabolites Prostaglandins Leukotrienes Vitamin D Cytokines Growth factors Colony stimulating factor Drugs affecting orthodontic tooth movement Neurotransmitters in OTM Genes in OTM Endocrine regulation of bone physiology Discuss in detail –biology of tooth movement Introduction The components periodontal ligament Theories of tooth movement Effect of orthodontic force on periodontal ligament - Light force - Heavy force Phases of tooth movement Transmission of mechanical strain into the bone cell and its translation to a genetic response(nuclear response) Biomechanical factors of bone remodeling Drugs in orthodontic tooth movement Neurotransmitter Genes in orthodontic tooth movement Endocrine regulation of bone physiology Biomarkers in orthodontic tooth movement 3 1 1 2 3 2 3 3 1 1 1 1 1 Group 2 1. Discuss in detail the various theorems governing retention in orthodontics Introduction Definition of retention Theorems of retention - Theorem 1 – teeth that have been moved tend to return to their former positions - Theorem 2 – elimination of the cause of malocclusion will prevent recurrence 2 2 2 - 2. Theorem3 – malocclusion should be over corrected as a safety factor Theorem 4 – proper occlusion is a potent factor in holding teeth in their corrected position Theorem 5 – bone and adjacent tissues must be allowed to reorganize around newly positioned teeth Theorem 6 – If the lower incisors are placed upright over basal bone, they are more likely to remain in good alignment Theorem 7 – corrections carried out during periods of growth are less likely to relapse Theorem 8 – the farther teeth have been moved, the less likelihood of relapse Theorem 9 – arch form, particularly in the mandibular arch cannot be altered permanently by appliance therapy Discuss the various schools of thought on retention philosophy and its role in avoiding relapse? Schools of thought on retention philosophy - Occlusion school- by Kingsley - Apical base school – by Alex Lundstorm - Mandibular incisal school – by Grieve and Tweed - Musculature school – by Rogers Discuss the period of retention during transitional period of Orthopaedic treatment and orthodontic treatment Retention during transitional period of Orthopedic treatment - In all 3 planes Transverse plane Vertical plane Sagittal plane For various appliances and various malocclusions Retention during transitional period of orthodontic treatment - In all 3 planes Transverse plane Vertical plane Sagittal plane For various malocclusions and habits - Deep bite correction - Open bite correction - Class 2 malocclusion correction - Class 3 malocclusion correction - Rotation 4. Discuss in detail the orthodontic considerations in the management of Periodontally compromised individuals for fixed orthodontic treatment Introduction - Types of periodontal disease relevant to orthodontic treatment 2 2 2 2 2 2 2 5 5 5 5 3. 10 10 2 2 2 2 2 4 Tissue response to different types of tooth movement - Intrusion - Extrusion - Tipping - Bodily movement into defect 1 1 1 1 Mucogingival considerations Frenum considerations Gingival hyperplasia Mouth breathing Gingival retention and esthetic considerations Considerations with ectopically positioned and unerupted teeth 2 2 2 2 2 2 5. Discuss the biomechanical considerations during orthodontic treatment in Periodontally compromised individuals and for prosthetic rehabilitation? Introduction Characteristics of orthodontic appliances - 0.022’’v/s0.018’’ - Metals Brackets v/s ceramic - Lingual v/s labial - Clear aligners, ESSIX, INVASALIGN Effects of reduced periodontal support-C res Tissue response to certain types of tooth movement - Intrusion - Extrusion - Tipping - Bodily movement Friction v/s frictionless mechanics Prosthetic rehabilitation - Parallelism of abutment teeth - Most favorable distribution of teeth - Redistribution of occlusal and incisal forces - Adequate embrasure space and proper tooth positions - Adequate occlusal plane and potential for incisal guidance at satisfactory vertical dimension - Adequate occlusal landmark relationship - Better lip competency and support - Improved crown to root ratio. 6. Discuss the psychological management of adult patient for orthodontic treatment Types of adult - Younger 2 2+2 2 1 1 1 1 2+2 2+2 6 3 - Older types of personality in adults - exceptional personality - inadequate personality - pathological personality several steps in behavioral and psycological management - advanced continuing education courses - refined consultation - appliance modifications for adult treatment to reduce about appearance 3 1 2 2 2 1 2 2 2 7. Write in detail the CO-CR discrepancy and its management in orthodontics CO-CR discrepancy and its management Introduction - Need for recording CO-CR discrepancy Definition of retruded access position Definition of centric occlusion Retruded contact position Bennett angle Occlusal interference - Criteria for optimal functional occlusion - Signs of CO-CR discrepancy - Mounted Vs hand held casts - Methods of recording maxilla mandibular relation - Recording condylar position Facebow Articulators Mandibular position indicator Axiography 8. Discuss in detail the various investigating procedures dealing with TMJ disorders in various malocclusions Investigating procedures dealing with TMJ disorders History - familial - medical - dental - personal examination - auscultation - palpation - functional analysis dental examination - occlusal and incisal wear - mobility of teeth 1 1 2 2 2 1 1 1 1 1 1 1 1 1 1 1 2 1 - restoration - cross bite or scissor bite - occlusion - deviation - deflection Temporalis examination Lateral pterygoid examination Medial pterygoid examination Masseter examination - lateral movement - protrusive movement Imaging procedures - hard tissues plain film radiography panoromic radiography conventional tomography computed tomography - soft tissues Athrography MRI - RECENT ADVANCES CBCT Electronic thermography Stereophotogrammetry MR Spectroscopy Tuned aperture Computed Tomography SPECT/CT with TC-MDP 9. Functional Occlusion- Merits and demerits? Definition of functional occlusion Types of functional occlusion - Lateral - Protrusive - Retrusive Merits - Free movement of mandible Mandible should be able to close into maximum intercuspation Cuspid protected occlusion Mutually protected occlusion Musculo skeletally stable position 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 2 2 2 2 1 1 1 1 1 1 - Optimal functional tooth contacts - CO-CR Demerits - Very time consuming - Equilibration should not be performed until growth - Stability of the jaw - Case equilibration in centric position 10. 11. Define an implant. Classify implant and discuss in detail MI as an absolute anchorage in orthodontics Introduction Definition History and development Classification Location Configuration design Composition Surface structure Sites of placement Procedure Uses Advantages and disadvantages Conclusion Discuss the biomechanical consideration of using MIA for various orthodontic tooth movements. Introduction Maxillary retraction mechanics Extraction cases Medium pull High pull Low pull Mandibular retraction mechanism: Extraction case: - Medium pull - High pull - Low pull Anterior intrusion mechanism in maxillary arch Anterior intrusion mechanism in mandibular arch 1 1 2 1 2 2 2 2 2 2 2 1 1 3 3 1 1 1 1 1 1 1 1 1 12. Anterior en-masse retraction & intrusion Sliding Vs loop mechanism for en-masse retraction Molar intrusion Maxillary arch lingual root torque Molar distalization in non –extraction Midpalatal implant for molar distalization Retraction mechanism Molar uprighting Buccal crossbite correction Unilateral constriction Conclusion Write a note on osseointegration. Discuss the factors affecting the stability of microimplants and why osseointegration does not occur with MI. Osseointegration: - introduction - definition - mechanism - factors influencing osseointegration in MI Factors affecting stability of microimplants: - Iatrogenic - Host - Implant 13.Discuss orthodontic treatment planning in Orthognathic surgery cases Introduction. Indications for Surgical-Orthodontic Treatment. Diagnosis and treatment planning. Collection of Data base. Demographic data History Systematic patient evaluation Radiographic examination Model analysis various surgical options Esthetic changes associated with each surgery. considerations for surgery during growth Basic surgical decision Basic orthodontic decisions 1 1 1 1 1 1 1 1 1 1 1 2 3 3 3 3 3 3 1 1 1 1 1 1 1 1 1 1 Cephalometric Prediction Tracing Principles Of Orthodontic Mechanics In Orthognathic Surgery Cases Selection of orthodontic appliances Bracket placement Presurgical objectives Extraction patterns Immediate presurgical preparation Mock surgery Immediate postsurgical objectives Postsurgical and retention objectives The surgical orthodontic correction of various type of malocclusion 1 1 1 1 1 1 1 1 1 14. Discuss in detail the various surgical procedures in orthodontic cases and their diagnosis and treatment planning. For Class II patients with mandibular deficiency For Class II skeletal open bite Surgical / orthodontic treatment of mandibular excess Treatment timing Asymmetric mandibular excess. For Class III skeletal open bite Inherent orthodontic stability. Inherent stability of the surgical approach Pre-surgical orthodontics. 15. presurgical and post surgical orthodontics Introduction Presurgical Aims Treatment planning in class 1 Treatment planning in class 2 Treatment planning in class 3 Biomechanics Post surgical Aims Procedures in class 1 Procedures in class 2 Procedures in class 3 cases 2 2 3 2 3 2 2 2 2 2 2 2 2 2 2 2 2 2 2 16. orthodontic management of periodontally compromised patients Introduction - Types of periodontal disease relevant to orthodontic treatment Tissue response to different types of tooth movement - Intrusion - Extrusion - Tipping - Bodily movement into defect 3 2 1 1 1 2 2 2 2 2 2 Mucogingival considerations Frenum considerations Gingival hyperplasia Mouth breathing Gingival retention and esthetic considerations Considerations with ectopically positioned and unerupted teeth Short Notes Group 1 1. 2. 3. Enumerate criteria for serial extraction Definition and rationale Indication Contraindication Clinical features Diagnostic criteria Protocol Nance Dewel Dentoalveolar compensation Introduction Head form and malocclusion tendency In class 1 In class 2 In class3 Management of midline Diastema Introduction Definition Incidence Etiology 1 1 1 2 1 2 2 2 2 2 2 2 2 2 4. 5) 6. 7. Management Diagnostic criteria Treatment modalities Elimination of etiological factors Active correction Retention-special considerations Management of tongue thrust habit Introduction Etiology Effect of tongue thrusting Management Habit breaking appliances Management of fixed appliances Retention and stability NAM in unilateral cleft case Introduction Definition of cleft Disadvantages of traditional infant orthopedic Historical background Objectives Techniques in unilateral cleft case Procedures Fabrication of moulding plates Modifications of moulding plates Nasal stents Goals Advantages Management of generalized spacing Introduction Etiology Diagnosis Treatment removal of etiology use of removable and fixed appliances use of crown and prosthesis retention protocol Muscles exercise definition of interceptive orthodontics objectives 2 2 2 2 2 2 2 2 1 1 1 1 2 2 1 1 2 2 2 2 2 2 2 8. 9. muscles exercises masseter muscle lips stretching holding button pull tug of war tongue one elastic swallow two elastic swallow Features and management of class 2 division 2 malocclusion introduction angle’s classification incidence etiology of division 2 malocclusion role of musculature features of division 2 malocclusion skeletal dental management long term retention protocol Fixed space maintainer introduction advantages disadvantages types bands and loops crown and loops lingual arch palatal arch transpalatal arch distal shoe esthetic space maintainer band and bar type factors considering time elapse dental age anatomical consideration Group 2 2 2 2 2 2 2 2 2 2 1 1 3 3 1. 2. 3. Rapid versus slow expansion indication for arch expansion histological background classification of appliances appliances use for rapid expansion appliances use for slow expansion features of rapid expansion features of slow expansion retention protocol Biomechanics of incisor intrusion Definition of intrusion Indication Intrusion with various appliance biomechanics 1 1 1 1 1 2 2 1 2 2 3 3 4. V Bend Biomechanics Introduction Off – centered v bend Centered v bend Step bend Opus loop 1 3 3 3 5. Introduction Design Biomechanics Advantages and disadvantages One couple system in orthodontics 2 3 3 2 6. Introduction Biomechanics Advantages disadvantages Ballista spring Introduction Design Biomechanics Application 2 2 3 3 Three piece intrusion spring Introduction Design Biomechanics Application 2 2 3 3 7. 1 3 3 3 8. Influences of oral function on dentofacial development Mastication - suckling- infant - mastication cycle by Murphy(6stages) Buccinator mechanism role of tongue Deglutition - infantile swallow(visceral) - mature swallow(somatic) Respiration Speech Abnormal posture Abnormal habits Altered path of closure 2 1 1 1 1 1 1 1 1 Group 3 1. 2. 3. Mandibular protraction appliances(MPA) introduction -given by Coelho filho(1995) advantages disadvantages types of mandibular protraction appliances - type 1 - type 2 - type 3 - type 4 Biofrankel introduction(given Lozza et al,J6 -2002) working bite appliance component effects of appliance in treatment of cl 3 patient 2 2 2 1 1 1 1 2½ 2½ 2½ 2½ Nasoalveolar moulding Nasoalveolar moulding Introduction History Scientific basis Method: - Correction of unilateral oronasal cleft deformity - Correction of bilateral oronasal deformity 1 1 1 2 3 1 1 4. Advantages Complications Cleft palate orthodontics 3 2 2 3 5. Cleft palate orthodontics Introduction Classification Treatment Goslon’s yardsticks 6. 7. Description Sample Results Uses Theories/Concepts of tooth movement Introduction bioelectric theory Fluid dynamic theory Pressure tension theory Bone bending theory Functional matrix hypothesis RAP Specific molecular mechanisms Hyalinization 8. Introduction Hyalinization caused by strong forces Hyalinization caused by light forces Elimination and reconstruction of the hyalinized zone. 2 2 3 3 1 1 1 2 1 2 1 1 3 3 3 Biomechanical mediators in orthodontic tooth movement Signaling molecules and metabolites Arachidonic acid metabolites Prostaglandins Leukotrienes Vitamin D Cytokines Growth factors 2 1 1 1 1 1 1 9. Colony stimulating factor neurotransmitters. Drugs in orthodontic tooth movement - Drugs that depress orthodontic tooth movement Bisphosphonates Prostaglandins E inhibitors Corticosteroids NSAIDS Other drugs inhibiting tooth movement Antidepressant , tetracycline, anticonvulsants, antimalarials statins calcium and others Drugs enhancing tooth movement Nicotine Misprostrol (synthetic prostaglandins) Vitamin D and Others 1 1 2 2 2 2 2 Group 4 1. Raleigh Williams keys of retention Introduction - given by Raleigh Williams (j6-1985, volume. 19,342350) 6 keys - Incisal edge of lower incisor should be placed on the A-pog linear 1mm in front of it - Lower incisor apices should be spread distally to the crowns more than generally and apices of lateral incisors spread more than central incisors - Apex of lower canine should be positioned distal to the crown - All four lower incisor apices must be in the same labiolingual plane - Lower cuspid root apex must be positioned slightly buccal to the crown apex - Lower incisor should be slenderized as needed after treatment 2. Tooth positioners Uses of tooth positioners Various types and materials for tooth positioners - Invisible retainers - Thermoplastic retainers - ESSIX retainer Tooth positioners 1 1½ 1½ 1½ 1½ 1½ 1½ 4 6 2 2 2 3. CSF (circumferential supracrestal fibrotomy) Indications Procedure Timing Advantages of CSF 4. Dark triangles and its management? Definitions 5. 6. 2½ 2½ 2½ 2½ 2 Etiology Importance in esthetics Management - Mucogingival surgery using coronally advanced flap +GTR - provisional gingival prosthesis - Orthodontic paralleling of roots and neighboring teeth - Mesiodistal enamel reduction(stripping) Deprogramming splint: 2 2 2½ 2½ 2½ 2½ Types of deprogramming splint Indications of deprogramming splint Construction of deprogramming splint Adjustment schedule 1 1 1 1 Retention strategies: Forward tongue placement habit requires special consideration 3 important situations for indefinite retention - Pt who had generalized spacing , in which arches are large and tooth structure are not - In circumstances of lip competency - In adult pts who have moderate upper and lower incisor crowding and whose incisor are mildly upright (cl 2 div 2 cases) Special considerations to periodontally compromised patients Special considerations for cross bite correction ,rotation correction 2 3 (1) (1) (1) 2½ 2½ Group 5 1. Mutually protected occlusion Definition 1 2. 3. 4. Mechanism of mutual protection condylar disocclusion and anterior tooth disocclusion Anterior coupling observation Posterior inter occlusal contacts - Closure stoppers - Equalizers Posterior disocclusion - Anterior group function - Cuspid protected occlusion Importance of mutually protected occlusion on dentition Roth’s power centric bite - Introduction - Importance and clinical significance of power centric bite - Procedure of taking bite - Conclusion Condylar adaptation in class III and class III malocclusion? Condylar position in normal occlusion In class II malocclusion - Path of closure from post rest position to occlusion without functional disturbances - Path of closure of mandible is upward and forward without displacement - Path of closure with posterior displacement In class III malocclusion - Straight path of closure - Path of closure with anterior displacement - Path of closure with posterior displacement In pseudo class III malocclusion Rickett’s study of condylar adaptation Related studies of condyle and fossa Miniplates Introduction Parts : - head - arm - body Types: - T-plate 1 1 3 3 1 2 3 3 2 1 1 1 1 1 1 1 1 1 1 1 2 2 - Y-plate - I-plate Indications Positioning Uses: - Molar distalisation - Intrusion - Protraction Removal Complications & control measures 1 1 1 1 1 5. Conjoint microimplants 2 3 3 2 6. Introduction Description Indications Conclusion Bone density assessment 2 2 2 2 2 Types of bone CT scan CBCT Radiographs FEM study Group 6 1. Mock surgery Selection of articulators 3 Aims of Model Surgery Protocol for Mock Surgery 3 3 advantages 1 2. Presurgical objectives Goals – 1. Align and level teeth without concern for dental occlusion. 2. Establish proper anterior-post. and vertical position of the incisors. 3. Achieve arch compatibility. Procedures that need to be done before surgery include – Alignment Leveling – by intrusion Arch compatibility 2 Procedures that can be done before and/or after surgery – Post. crossbite correction Leveling by extrusion 2 Procedures necessary after surgery – Settling and leveling by extrusion Root paralleling at osteotomy sites Detailed tooth positioning. 2 2 Selection of the appliance 3. Cephalometric prediction tracing Step 1 - Trace the Stable Structures 2 Step 2 - Determine the Ideal Vertical Position for the Upper Incisor. Step 3 - Autorotation of the Occlusal Plane. Step 4 - Mandibular Movement. Steps 5-10 - Completing the Tracing. 4. Management of peg lateral Orthodontic perspectives of the peg shaped lateral - Boltons discrepancy Space management Axial inclination of lateral Aesthetic proportions in size 2 2 2 2 Type of restorations 2 5. Management of congenitally missing lateral incisor Restorative management 2 2 2 2 2 1. Space regaining and space maintenance Retained deciduous incisor present Left till patient is sent for restorative treatment regaining space Restoration Dental implant and fixed bridges Canine substitution Considerations in canine substitution-size, esthetics ,gingival line Recontouring of canine and premolar teeth esthetics. 1 1 2 2 2 2 Paper 3 – Recent Advances 1) Recent innovations in class II molar distalizers Indications for molar distalization (10) Contraindications (10) Ricketts criterion (5) Classification of appliances (5) Different appliances used and a brief description Keles slider 5 Implant supported distal jet 5 Modified keles slider 5 SAS 5 2) Carrier distalizer 5 First class appliance 5 Essix base molar distalizer 5 Frozat appliance 5 BAPA 5 Removable molar distalizer 5 Intraoral maxillary molar distalizer 5 Beneslider 5 Distal screw 5 Frog appliance 5 Recent advances in management of impacted teeth. Background (5) etiology of impacted teeth (10) theories put forward for impacted canines (10) sequelae of impacted teeth (5) Diagnosis (10) mechanotherapy-general steps (20) a)methods of space gain (10) b)force generating devices (10) c)tunnel traction (5) d)autotransplantation (5) e)buccally and palatally impacted canines 3) (10) Recent trends :invisible orthodontics Background (5) Indications (5) newer bracket materials a)ceramic brackets (10) b)plastic brackets (10) aesthetic and coated archwires (10) clear aligner therapy a)invisalign (10) b)clearpath (10) lingual orthodontics a) History 5 b)generations of lingual brackets 5 c)indications 5 d)contraindications 5 e)biomechanical considerations 5 f)anchorage considerations 5 g)advantages 5 h)disadvantages 5 4) 5) advances in digital imaging in orthodontics define digital image (5) digital photography (5) digital radiography (5) principles of digital imaging (5) RVG (5) digital ceph (10) video imaging (10) CT, spiral ct, cbct (20) MRI (10) Steriolithography (5) Steriophotogrammetry (5) 3-D laser (5) Occlusogram (5) clinical application-sure smile technology and ortho CAD (5) newer bracket prescriptions in orthodontics History (10) PEA (10) other newer systems tip-edge (10) 6) alexander vari (10) Vaiziz (10) butterfly system (10) sondhi system (10) combination anchorage technique (10) kameda technique (10) Bedditot (10) Describe in detail the mechanics and practice of invisalign Introduction (5) History (10) Development (10) diagnosis and treatment planning (10) appliance fabrication (10) aligner materials (5) Attachments (5) possible tooth movements (10) Indications (10) Contraindications (10) finishing with invisalign (5) retention and stability (5) Risks (5) 7) lingual orthodontics: evolution to current trends History (10) generations of lingual brackets (20) Indications (10) Contraindications (10) Biomechanics (20) anchorage considerations (10) finishing ,detailing and settling (10) Advantages (5) 8. Describe in detail accelerated osteogenic orthodontics Background 5 History 5 Koles technique(surgical procedure, philosophy) 10 Corticotomy 5 Wilckodontics(surgical procedure) 20 Clinical applications 5 Indications 5 Advantages 5 Different types of graft material 10 Role of PRP &PRF 10 Indications in periodontically compromised patients 10 Complications 10 9.Distraction orthodontics and its importance in orthodontics Definition and history 5 Importance in orthodontics 5 Biomechanics(classification of treatment modality ,mechanical forces) 10 Indications 5 Clinical examination and diagnostic records 10 Distraction devices (Characteristics) 10 Mandibular distraction devices(classification and surgical procedure) 15 Maxillary distraction devices(classification, technique, RED) 15 Orthodontic management(pre, during, post) 15 Management of alveolar defects and distraction of PDL 5 Future implications 5 10.Recent Advances in mixed dentition orthodontic treatment Definition of mixed dentition 5 Features of mixed dentition 5 List of problems to look into for timing of treatment 10 Interceptive, corrective and preventive orthodontics (definition) 10 Advantages of early intervention 5 Early management of tooth size/arch size discrepancies (space management and space gaining procedures) Early management of transverse discrepancy 15 10 Early management of class II malocclusions 15 Early management of skeletal and pseudo Class III malocclusions 15 Early treatment and compliance(psychological need for Rx) 5 5 Relapse tendency 11.Recent concepts in biology of tooth movement 10 History. 30 Theories of orthodontic tooth movement. 15 Biological response of surrounding tissue to orthodontic forces. 5 Difference between modeling and remodeling. 5 Biological markers of orthodontic tooth movement. 5 Chemical markers of orthodontic tooth movement. 10 Genetic basis of orthodontic tooth movement. 5 Effects of hormones and vitamins on orthodontic tooth Effects of drugs on orthodontic tooth movement. Clinical application of concepts of orthodontic tooth movement. movement. 10 10 10 12. Recent advances in orthodontics alloys Classifications Write about types of Arch wires a)stainless steel b)beta titanium c)niti wires d)Chinese niti e)Japanese niti 10 f)copper niti g)dual flex wire h)speed supercable i)nitrogen coated arch wire j)alpha titanium k)titanium niobium l)optiflex wire m)marsenol n)imagination o)lee white wire p)CAN Write about types of Brackets Stainless steel brackets Titanium brackets Gold coated brackets Platinum coated brackets Nickel free brackets 30 13. Latest concepts in growth and development Introduction 10 Terminologies of growth and development 10 Mechanisms of growth 20 Theories of growth 20 Functional matrix theory -4 articles 20 Voudouris et at –Growth relatively theory/light bulb theory. 20 14. Advances in orthodontic bonding Introduction and history Steps in orthodontic bonding Classification of adhesive resins Composition of adhesive resins Setting reaction 10 10 15 5 5 GIC Ormocer 1 step adhesive,2 step adhesive Primers and its modifications Bonding to unconventional tooth surface Importance of fluoride release Nanotechnology 15. Oral sleep apnoea- clinical feature and management Definition Incidence History of OSA Symptoms Pathogenesis Predisposing factors Types of apnea Cycles during sleep in apnea Diagnosis Epworth sleepiness scale Investigations Cephalometric characteristics of OSA TREATMENT OPTIONS Non specific therapy Specific therapy Oxygen administration Physical or mechanical therapy Pharmacological agents Surgery Oral appliance-tongue retaining devices, oral airway dilator designs, clearway oral appliance, PM positioner, TAP, modified herbst, EMA, oral pressure appliance, MRD, 5 5 10 10 10 10 5 5 5 5 5 10 10 10 10 5 5 5 5 5 5 5 5