[Comparison of two different methods of rapid expansion combined with maxillary protraction in the treatment of skeletal class Ⅲ malocclusion].

The bone-anchored RPE with maxillary protraction could reduce the adverse tooth compensation effect, including the protrusion of maxillary anterior incisors, the increase of overjet and mandibular plane angle, and the mesial movement, extrusion and buccal inclination of maxillary molars.