the Condylar Response of Mini-plate Anchored Rigid Fixed Functional Appliance Versus Dentally Anchored Semi-rigid One

"1. Two mini plates are chosen, the last hole in every plate is used to solder the ball housing of type IV Herbst appliance.~2. The two mini plates are placed bilateral at the mandibular symphysis and fixed by at least 3 screws, the surgical wound is sutured leaving an extended part of the plate in the oral cavity which contain the soldered ball housing.~3. The surgical wound is left for 2 weeks for proper soft tissue healing, in the meantime separation in the arch, band placement on the first premolar and molar bilateral followed by impression for construction of the upper Herbst splint.~4. Cementation of upper Herbst splint with connecting the telescopic piston through fitting of the plunger into the tube bilaterally.~5. When reactivation of the telescopic piston is needed, extension rings are used."

"1. The patients will be treated by fixed orthodontic appliance with using series of orthodontic NiTi arch wires for levelling and alignment.~2. Installation of series of orthodontic stainless steel arch wires until 0.0019 x 0.0025 inch for both arches.~3. Installation of the Twin Force Bite Corrector appliance for 4 to 6 months.~4. Using of class ΙΙ intra-oral elastics for both sides for 2 to 3 months.~5. Finally follow finishing steps for each patient."