Nonsurgical treatment of 3 maxillary lateral incisors with dens invaginatus is reported. Invaginated teeth present technical difficulties with respect to their management because of complicated canal morphology. In the first case reported, apical abscess with incomplete root formation was found at the time of examination. Calcium hydroxide apexification provided favorable conditions for root closure and obturation. The other 2 cases were treated by conventional root canal treatment. Follow-up examinations showed successful clinical results, with osseous healing evident radiographically.