Unexpected breakage of mandibular midline distraction device: case report

Management of the transverse mandibular deficiency and anterior crowding by mandibular midline distraction osteogenesis (MMDO) is an efficient and stable alternative to orthodonthic mechanics with minor complications. Although the only major complication reported previously during MMDO is the nonunion of the segments, in the present case report an unexpected breakage of the distractor in MMDO during the consolidation period as a new major complication was presented.