Tooth eruption in a patient with craniometaphyseal dysplasia: case report

Craniometaphyseal dysplasia (CMD) is a very rare genetic disorder of bone r emodeling caused by osteoclast dysfunction, The clinical and radiographical features of oral findings are presented in a sporadic case of CMD in a chi ld (age 10 years, 7 months). An intraoral examination showed severe maloccl usions, including anterior crossbite and deep bite. Furthermore, a radiogra phic examination showed increased radiopacity of the maxilla and mandibular bones due to hyperostosis and sclerosis of the jaw. There was no root reso rption of the canines or molars in the primary dentition, although root for mation of the permanent teeth was proceeding, Dental age was calculated to be approximately 1 year, 4 months younger than his chronological age. The e ruption speed of the permanent lateral incisors after the gingival emergenc e was shown to be within normal values, and we discuss whether the canines and premolars in the permanent dentition could erupt or not.