Abstract
Cleidocranial dysostosis is generally characterized by hypoplasia of the clavicle and the cranium.
This case concerned a nineteen year old male patient diagnosed as having cleidocranial dysostosis.
The patient showed mental retardation, pseudoautism, prolonged retention of the deciduous teeth and delayed eruption of the permanent teeth.
From the clinical point of view, we are planning to follow up the present general status and to pay close attention to the oral conditions.