33 FUNCTIONAL APPLIANCES Removable or fixed orthodontic appliances which use forces generated by the stretching of muscles, fascia, and /or periodontium to alter skeletal and dental relationships
34 TYPE OF CASEFor correction of moderate to severe Class II div I and Class II div 2Less for correction of Class III due to much lower success
35 INDICATIONS PATIENT Growing patient Motivated patient DENTAL Classic case: uncrowded, well alignedFunctional appliance have non-mechanism for treating irregularities of alignment of teethSKELETALModerate to severe Class II skeletal baseNormal to low MMPA
36 CONTRA INDICATIONS Non-growing Non compliance Labial tipping of lower incisorsCare needed with:High angle cases with backward mandibular growth rotationCases with proclined lower incisors
42 The Frankle Appliance Is a functional regulator and uses shield. Complex, uncomfortable, rapid changes if worn properly.Three main variants:FR1: Class II div 1FR2: Class II div2FR3: Class III
43 WEAR 12-14 hrs-Andresen, Harvold, Bionator Full-time- twin block, Herbst, Frankel (except for eating and sports)
44 appliance which is fixed to teeth and cannot be removed by the patient FIXED APPLIANCESappliance which is fixed to teeth and cannot be removed by the patient
45 COMPONANTS OF FIXED APPLIANCE 1. Attachments include bands (especially on 1st and 2nd molars) & brackets bonded directly to the teeth (especially on anterior & premolar teeth) .2. Axillaries (attach arch wire to brackets and bandsto move teeth such as tubes, hooks and elastics3. Arch wires are attached to the brackets by bending the wire, itwill give force and pressure that cause teeth to move in thedesired direction .
56 Fixed AppliancesRemovable appliances- Precise three dimensionalcontrol of tooth movement- Less precise control of toothmovement- Bodily tooth movement- Tipping movement- High anchorage requirement- Smaller anchoragerequirement- Controlled space closurepossible- Controlled space closuredifficult- Simple to correct rotations- More difficult to correctrotations.- Long chairside time- Short chairside time- Not dependent oncompliance to wear- Dependent on compliance towear- Require extensive training tomanage- Require less training to- Multiple tooth movement- Fewer tooth movement
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