the Mini-plate Anchored Herbst Appliance Versus the Dentally Anchored Fixed Functional Appliance

"Herbst Group:~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.~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."

"TFBC Group:~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."