Endodontic treatment of maxillary canine with dens invaginatus and immature root.

A conservative approach to endodontic treatment of a maxillary canine with dens invaginatus is presented. Pulp involvement and periapical abscess subsequent to contamination through the invagination space occurred at an early dental age before root completion. Treatment was initially to achieve apical closure before the completion of root canal treatment. Apexification with calcium hydroxide was performed to provide favorable conditions for healing and eventually for successful obturation. Difficulties and entanglements posed by the complex internal morphology and the root developmental stage are presented. Clinical considerations are discussed and a treatment approach used to overcome those obstacles described.