CATEGORY 54 AUSTRALASIAN DENTIST LINICAL Jones jig u Intramaxillary u Buccal u Fixed K-loop molar distalizer u Intramaxillary u Buccal u Fixed Lokar molar distalizer u Intramaxillary u Buccal u Fixed Pendulum appliance u Intramaxillary u Palatal u Fixed Klapper Super Spring II u Intramaxillary u Buccal u Fixed Superelastic nickel titanium wire u Intramaxillary u Buccal u Fixed Compressed Springs/ NiTi coil springs u Intramaxillary u Buccal u Fixed Mini-distalizing Appliance (MDA) u Intramaxillary u Palatal u Fixed Open Coil Jig u Intramaxillary u Buccal u Fixed Franzulum appliance u Mandible u Lingual u Fixed Lip bumper u Mandible u Buccal u Fixed/Removable Miniscrew Implant Supported Distalization System (MISDS) u Intramaxillary u Buccal/Palatal u Fixed TREATMENT PLANNING The treatment approach is divided into two phases. Objectives of the first phase – space gaining phase: u To distalize the upper molars bodily so that the patients will occlude in Super Class – I occlusion (i.e., over corrected). u To achieve generalized spacing through dento-alveolar widening and growth. u To correct molar inclination, rotation and crossbite. Objectives of the second phase – consolidation phase are: u Andrews’ six keys to normal occlusion. u Overbite, overjet and all dental malpositions are corrected. GENERAL CONSIDERATIONS a. Force direction u Proffit described the amount of force for bodily movement of molar is 100– 120 gm and approximately 50–60 gm for tipping movement. u Continuous forces are preferable to intermittent or interrupted forces. u Should be along the arch form. u Should be as close to the centre of resistance of the molar as possible. u Extra-oral forces consideration – Tenenbaum suggests 12 ounces or 300 g, a force that can be incremented. Muir and Reed recommend 500 g per side. The extra-oral traction must be worn for at least 12 hours a day, but preferably between 14 to 16 hours a day on average. During distalization we must be sure the molars do not have
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