Long-term skeletal and dental stability of mandibular symphyseal distraction osteogenesis with a hybrid distractor.

Introduction: The purpose of this study was to examine the long-term skeletal and dental stability of mandibular symphyseal distraction osteogenesis (MSDO) with a tooth-borne and bone-borne hybrid distractor. To differentiate the effects of MSDO from the orthodontic movement and relapse, each phase of treatment was analyzed.

Methods: Twenty-five patients were included in the study, ranging in age from 12.