Regional odontodysplasia: report of three cases.

Regional odontodysplasia is a developmental anomaly of dental tissues with characteristic clinical, radiographic, and histologic appearances. It most commonly affects the maxillary anterior teeth of both the primary and permanent dentition, and occurs in females twice as often as in males. The pathogenesis is unknown. The clinical and histopathologic findings of regional odontodysplasia in three patients are discussed.