Complex treatment of dens invaginatus type III in maxillary lateral incisor.

The complex anatomy and diagnosis of dens invaginatus make endodontic treatment of such teeth difficult. This case describes combined nonsurgical and surgical treatment of a maxillary lateral incisor with a normally shaped canal and a dens invaginatus type III with a lateroradicular lesion. The root canal was treated conventionally with gutta-percha and a zinc oxide-eugenol sealer. The root was surgically exposed and the canal of the dens invaginatus was cleaned, instrumented and obturated with gutta-percha and a zinc oxide-eugenol sealer. At follow-up 3 years 6 months later, the tooth was asymptomatic and radiographically showed repair of the lesion in the region of the dens invaginatus.

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