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Orthodontics

Upper Airway constiction and its Effects on Growth & Development-Dr-Anusha

                               CONTENTS 1.HISTORY 2.UPPER AIRWAY STRUCTURE – PARTS 3.RESPIRATORY MECHANICS 4.CAUSES OF UPPER AIRWAY CONSTRICTION 5.NASO – REPIRATORY FUNCTION AND CRANIOFACIAL GROWTH 6.HEAD POSTURE 7.DIAGNOSIS 8. HISTORY AND PHYSICAL EXAMINATION 9.CLASSIFICATION OF RESPIRATORY OBSTRUCTION 10.LONG FACE SYNDROME 11.MOUTHBREATHING AND DENTOFACIAL DEFORMITIES 12.ROLE OF TONSILS AND ADENOIDS 13.RHINITIS 14.SEQUELA OF UPPER …

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Update of othodontic adhesives

Introduction Common points about adhesives Materials used as adhesives Composites Generations of adhesive Other adhesive materials Clinical application of adhesives–  Bonding in Orthodontics Updates Conclusion Setting Reaction: The hydrogen ions of the acid attack the glass particles in the presence of water  releasing calcium, strontium, and aluminium ions. The metal …

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Twin block-gerard

These are functional appliances designed to enhance forward mandibular growth in the treatment of distal occlusion by encouraging a functional displacement of mandibular condyles downards and forwards in the glenoid fossa. Repositioning creates a positive proprioceptive response in the muscles of mastication. This is  fundamental functional mechanism of habitual dentition …

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Tweed-Merrifield Philosophy

   First degree anchorage preparation:       Minimal anchorage preparation  required.       applicable in : malocclusions with ANB 0-4deg ,facial       esthetics are good, total discrepancy does not exceed 10mm.       Mandibular anchor molars uprighted /maintained in their upright positions to prevent being elongated by Class II elastics.       The direction of …

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TWEED-MERRIFIELD EDGEWISE APPLIANCE

Merrifields innovations give the modern orthodontist a more accurate,reliable,precise,efficient and practical protocol of diagnosis and treatment.It allows the clinician ti do the following… – Define objectives for the face,dentition,and skeletal pattern – Properly diagnose the malocclusion – Use the edgewise appliance to reach the predetermined objectives efficiently.   This universally …

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TWEED PHILOSOPHY

Introduction :    History and evolution of the edgewise appliance.    Dr.E.H.Angle, Dr. Charles Tweed, Dr.Levern Merrifield—contributions to the development of edgewise appliance The Tweed philosophy The Tweed technique The Tweed Merrifield philosophy The Tweed Merrifield technique Conclusion Based on the then prevalent assumption that,if cuspal interdigitation of teeth were made …

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Treatment planing for maxillary treatment procedures

For patients whose orthodontic problems are so severe that neither growth modification nor camouflage offers a solution ,surgical realignment of the jaws or repositioning of dentoalveolar segment is the only possible treatment.   To take a face bow registration, the bite-fork is sandwiched within four layers of well-softened pink card …

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TREATMENT OF CLASS III MALOCCLUSION

McGuigan (1966) – Inheritance of class III malocclusion in Hapsburg Family, having the distinct characteristics of prognathic lower jaw. Litton et al (1970) – Dental characteristics of class III are related to genetic inheritance. Functional factors – Anteriorly positioned tongue believed to be a local epigenetic factor. Mental diseases – …

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Transpalatal arch for molar rotation

Computer based strain gauge system Two units representing rt. & lt. Molars with lingual attachments Attachments placed vertically,parallel & facing each other on same plane Attachments fastened to movable clutches with strain gauge sensors SAGITTAL AND HORIZONTAL FORCES RECORDED BY FOUR FORCE RECORDERS AND MOMENTS RECORDED BY TWO MOMENT RECORDERS …

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Torque new (2)

Proper buccolingual inclination of anterior and posterior teeth is essential to provide better esthetic, stability and functional occlusal relationship. With Edgewise appliance Torque or buccolingual inclination was achieved by third order bends placed in arch wire. With Begg appliance inclination was achieved with auxiliaries. But today, majority of orthodontic brackets …

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