Morphological changes of the mandible and temporomandibular joints in a patient with cleidocranial dysostosis.

The morphology of the dentition and facial parts of the skull in a 17-year-old girl with cleidocranial dysostosis are described. The opening movement of the mandible was limited to 18 mm. Radiological examination demonstrated that this limitation was due to deformities of the temporomandibular joints. To our knowledge, such deformities have not been described in the literature.