Endodontic management of a maxillary lateral incisor with dens invaginatus and external root irregularity using cone-beam computed tomography

Abstract

Cone-beam computed tomography (CBCT) is a useful diagnostic tool for identification of both internal and external root configurations. This case report describes the endodontic management of a lateral incisor with both dens invaginatus and external root irregularity by using CBCT. Nonsurgical endodontic retreatment was performed on the lateral incisor with dens invaginatus. A perforation through the dens invaginatus and external concavity was repaired using mineral trioxide aggregate. After 18 mon of follow-up, there were no clinical symptoms. Recall radiographs appeared normal and showed healing of the periapical pathosis. The understanding of both internal root canal configuration and external root irregularity using CBCT can ensure predictable and successful results. (Restor Dent Endod 2012;37(1):50-53)

Dilemmas pertaining to three canals in the mesiobuccal root of a maxillary second molar: a case report

“…In the above case, a mesially angulated radiograph uncovered the internal anatomy, but because of inherent disadvantages of intraoral periapical radiographs, application of an advanced imaging modality such as CBCT was found to be valid, given its ability to localize and describe the internal and external anatomy in three dimensions 36,37. However, due to the non-availability of a CBCT unit in the vicinity, an MDCT scan was recommended.…”

Endodontic treatment of maxillary lateral incisors with anatomical variations

“…However, these radiographs produce only two-dimensional images of three-dimensional objects, resulting in distortion and superimposition of structures. In comparison, more recently developed CBCT scans have significantly improved the understanding of three-dimensional root canal morphology 5,17. CBCT scans can be useful diagnostic tools in endodontic practice since it could help to speculate the location of the canal by referring anatomical structures 18…”

“…This generalization is not completely true as reports describe maxillary lateral incisors with two roots or three canals 2,3. Many of these manifest clinically as germination, fusion, concrescence, or dens invaginatus, since maxillary lateral incisors are often located at the site of high embryological risk 4,5. Maxillary lateral incisors can have various configurations of root canals, especially in the Turkish population 6,7.…”

Management of root canal perforation by using cone-beam computed tomography

“…Lim et al also suggested that CBCT is more useful for detection of perforations in the faciolingual plane than conventional radiography (Figure 1). 3…”