Restor Dent Endod.  2023 May;48(2):e17. 10.5395/rde.2023.48.e17.

Successful nonsurgical treatment of type II dens invaginatus with 5 root canals using a self-adjusting file: a case report

• Miranda Candeiro GTd
• Menezes ASTd
• Oliveira ACSd
• Ferreira Alves FR

• KMID: 2548220
• DOI: http://doi.org/10.5395/rde.2023.48.e17

Abstract

The present report describes the endodontic treatment of an Oehlers type II dens invaginatus in a maxillary lateral incisor with 5 root canals, an extremely rare condition. Apical periodontitis and related symptoms were noted. Cone-beam computed tomography was used to aid the diagnosis, reveal tooth morphology, and assist in canal location. The pulp chamber was carefully accessed, and the root canals were explored under magnification. All root canals were prepared with an R25 Reciproc Blue system and sodium hypochlorite (NaOCl) irrigation. After initial preparation, a self-adjusting file (SAF) with NaOCl and ethylenediaminetetraacetic acid was used to complement the disinfection. Additionally, calcium hydroxide medication was applied. Vertical compaction was used to fill the canals with a calcium silicate-based endodontic sealer and gutta-percha. After 12 months, the patient exhibited healing of the periapical region, absence of symptoms, and normal dental function. In conclusion, this nonsurgical treatment protocol was successful in promoting the cure of apical periodontitis. Both complementary disinfection with an SAF and use of calcium hydroxide medication should be considered when choosing the best treatment approach for dens invaginatus with very complex anatomy.

Keyword

Anatomy; Calcium hydroxide medication; Dens invaginatus; Root canal; Self-adjusting file

Figure

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  Figure 1 Clinical aspect of the tooth crown and initial radiographic image.

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  Figure 2 Cone-beam computed tomographic images.

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  Figure 3 Access cavity including both the true root canal and the invagination and root canal exploration (clinical and radiographic views).

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  Figure 4 Details of the filling phase.

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  Figure 5 Clinical and radiographic aspects 2 years after treatment.

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