Oligodontia in the primary dentition with permanent successors: report of case

A case of oligodontia in the primary dentition with corresponding permanent successors is described. A two-year-old Japanese boy was admitted to the pedodontic clinic with the chief complaint of congenitally missing primary teeth. The boy appeared to be normally developed and was in good physical health. There was no history of trauma, extraction, or exfoliation of primary teeth. Clinical examination showed that eight anterior teeth were missing. Also, a canine and three first molars were much smaller in size and were malformed. However, radiographic examination at age four years, ten months showed that all of the permanent tooth germs--including the corresponding successors of congenitally missing primary teeth--were evident.