Dens invaginatus in a primary canine: a case report.

This article describes an unusual case of dens invaginatus in a primary canine. A 5-year-old boy presented with an infected mandibular primary canine. A periapical radiograph showed a developmental disturbance in the crown diagnosed as dens invaginatus. A necrotic pulp has been removed from the tooth and the root canal obturated with a resorbable paste. Six weeks later the tooth was found to be asymptomatic. A composite restoration replaced the temporary filling material. Dens invaginatus may appear in the primary dentition, and early diagnosis is important for preventative treatment.