Segmental alveolar distraction for the correction of unilateral open-bite caused by multiple ankylosed teeth: a case report.

Ankylosed teeth fail to erupt to meet their counterparts in the opposite jaw. In cases where ankylosis occurs in multiple teeth, the occlusion shows an open bite. This article describes a case of unilateral open bite caused by multiple ankylosed teeth, where treatment involved segmental alveolar bone distraction.

Assessment of dental arch relationships in Japanese patients with unilateral cleft lip and palate.

Objective: Evaluation of the dental arch relationships of Japanese patients with unilateral cleft lip and palate (UCLP) from the orthodontic clinic of the University of Tokyo Hospital (UTH) compared with patients treated by the Oslo Cleft Team, Norway.

Design: Retrospective study and comparison with previous reports.

Materials: Dental models of 24 patients with UCLP in UTH taken before orthodontic treatment and before alveolar bone grafting were included.