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MANAGEMENT OF FUNCTIONAL APPLIANCE. Pre-functional Stage. a short period of treatment prior to fitting the appliance optimize the benefits of a functional appliance. Eg : Removable appliance with a midline expansion screw Maxillary arch expansion
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Pre-functional Stage • a short period of treatment prior to fitting the appliance optimize the benefits of a functional appliance. Eg: • Removable appliance with a midline expansion screw • Maxillary arch expansion • prevent a posterior maxillary lingual crossbite in saggital correction • Not necessary in twin block • a removable appliance or a sectional fixed appliance • prior to or parallel with the functional appliance • class II division 2 incisor relationship Proclination and alignment of the labial segments if they are retroclined or crowded
Articulation in simple articulator • working models mounted to a postured bite taken in the mouth. • usually done in wax, with the mandible as far forwards as is comfortable
Vertically there should be approximately 2-mm of separation between the incisors. • But Harvold-type activators and twin -block are acception