Comparative analysis of treatment outcomes between Bi-Maxillary Plates and Facemask for treating class III malocclusion in growing subjects. A retrospective study

Aim To comparatively analyse the skeletal and dento-alveolar changes after treatment with Class III Bi-Maxillary Plates (BMPs) and FM appliances in growing patients with Class III skeletal malocclusion. Results In both BMP and FM groups, there was a significant improvement in maxillary growth, while changes in the mandibular projection were recorded only in the changes FM group with a slight tendency to clockwise mandibular rotation and increased facial divergence. Dento-alveolar effects were similar in both groups but were exacerbated in the BMP group with significant greater buccal inclination of the upper incisors and lingual inclination of the lower incisors. A greater counter-clockwise rotation of the occlusal plane was also recorded in the BP group. Conclusion BMPs with class III elastics provided a similar pattern of skeletal and dento-alveolar changes compared to FMs, however supported by slightly greater dentoalveolar effects that contribute to the correction of the class III malocclusion in growing subjects.