Introduction: Twin Force Bite Corrector (TFBC) appliance is considered effective for correcting Class II malocclusions in growing patients, although their skeletal and dental effects differ. In the literature, there is no comparison between profile esthetic outcomes with fixed functional appliance with dental and skeletal anchorage. The purpose of this study was to provide that comparison.
Subjects & Methods: 19 skeletal Class II Div 1 malocclusion with a convex skeletal profile due to retrognathic mandible were divided into 2 treatment groups. Group 1 received TFBC and had a mean age of 13 years & 10 months. Group 2 received TFBC with skeletal anchorage and had a mean age of 14 years and 2 months. Lateral cephalograms were analyzed after completion of the leveling & alignment stage just before insertion of the appliances (T1) and three months after removal of the appliances(T2), with an average total treatment time of 16 months for group 1 and 14 months for group. Results: Both groups of subjects had significant profile improvements with treatment (P .05),.
Results: The treatment effects of both protocols lead to normalized soft tissue parameters at the end of the overall treatment.
Conclusion: TFBC with skeletal anchorage induced a greater soft tissue changes without causing significant changes in the axial inclination of the mandibular anterior teeth.