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Orthodontics

Orthodontic Management of Cleft Lip and Palate

Introduction Classification of cleft lip and palate Epidermology Etiological Factors Risk factors Embryological background of cleft Lip and Palate Treatment sequence Role of Orthodontist Case History and clinical examination Dentofacial Findings In Cleft Lip and Palate Pre surgical Infant Orthopedics Lip Closure Secondary Palate Closure Early Orthodontic Treatment Alveolar Bone …

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ORTHODONTIC 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 According to tolerance of moisture HYDROPHOBIC  e.g./ conventional BIS-GMA These adhesives require etching and absolute dry environment HYDROPHILLIC  e.g./GIC’S  RMGIC’S Achieves chemical adhesion without etching …

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Ortho in CLEFT

An intergrated approach is essential in management of patients with orofacial clefts Adult patients often need a synergistic intervention by  Orthodontist & Surgeon for the final rehablitation Orthopedic & surgical expansion of the scarred constricted maxilla, orthodontic preparation & completion, Orthognathic reconstruction with adequate bone grafts offers the function & …

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Periodontal Changes in Orthodontic Treament

GINGIVITIS Accumulation of microorganisms around teeth can cause gingival redness, bleeding and edema, changes in gingival morphology, reduced tissue adaptation to the teeth, an increase in the flow of crevicular fluid and other clinical signs of inflammation. Mechanical removal of plaque reduces gingivitis. Removal of supragingival plaque has been shown …

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Oral Habits

ACCORDING TO MORIS AND BOHANNA(1969)  pressure habit  non pressure habit  biting  habit KLEIN CLASSIFICATION(1971)   intentional habits(meaningful)   non intentional habits(empty habits) ACCORDING TO FINN (1987)   compulsive habits   non compulsive habits   muscular +passive object (nail biting)   passive object (pillowing)   functional disturbance (mouth breathing) DIGIT SUCKING …

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Optimum Orthodontics – How to Move Teeth without Root Resorption

The main goal of orthodontic treatment is to improve the form and function of orofacial complex. Optimally , efforts to reach this  goal should be performed efficiently  causing no discomfort to patient and without long lasting tissue damage . Apical root resorption is a common idiopathic problem associated with orthodontic …

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OPEN BITE

Tongue posture and function should be primary consideration. Differentiation between primary causal and secondary adaptive or compensatory dysfunction is essential. Functional analysis also must bassess the magnitude of force ( i,e simple pressing versus strong protractive action). Cephalometric analysis can localise the nature of open bite – Skeletal/Dental. Therapy depends …

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Normal Occlusion

INTRODUCTION HISTORY INTRAARCH TOOTH ALIGNMENT INTERARCH TOOTH ALIGNMENT CENTRIC STOPS CENTRIC RELATION CENTRIC OCCLUSION COMMON OCCLUSAL RELATION OF POSTERIOR TEETH. COMMON OCCLUSAL RELATION OF ANTERIOR TEETH. FACTORS AND FORCES DETERMINING TOOTH POSITION. ANDREWS SIX KEYS TO OPTIMAL OCCLUSION CRITERIA FOR GOOD OCCLUSION The alignment and occlusion of the dentition are …

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Non-Extraction Treatment Modality

Traditionally Begg practitioners were branded as extractionists.  Advances in mechanotherapy, and changes in treatment concepts have changed this opinion about the Begg technique and curtailed the need for extraction in contemporary treatment.     The prevalence of indiscriminate extractions in earlier decades can partly be blamed on over use of  …

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Nickel Titanium

INTRODUCTION HISTORY EVOLUTION OF ARCHWIRE MATERIALS METALLURGY NICKEL-TITANIUM ALLOYS – GENERATIONS STRUCTURE MECHANICAL PROPERTIES OF NITINOL SHAPE MEMORY EFFECT AND NICKEL – TITANIUM ALLOY SUPERELASTICITY CLASSIFICATION CHINESE NITI JAPANESE NITI COPPER –NITI CV NITI REVERSE CURVE NITI GOLD NITI DUAL FLEX ARCH WIRES SUPERCABLE WIRE TURBO WIRE (BRAIDED PREFORMED NICKEL-TITANIUM) …

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The Intelligent Archwire

The crystallographic,tri-dimensional lattice of the Ni-Ti alloy is present in 2 phases: Martensite phase:the lattice is body-centered  (cubic or tetragonal) Austenitic phase: the lattice is face – centered (hexagonal close packed) An intermediate rhombohedral ‘R’phase with a simple hexagonal lattice has also been identified. The deflection in an austenitic archwire …

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