Cutaneous Sinus Tract from Mandibular Second Molar with C-shaped Canal System and Improper Former Root Canal Treatment: A Case Report

Abstract

Here, we report the diagnosis and treatment of an extraoral cutaneous sinus tract originating in a mandibular second molar with a C-shaped root canal system. The patient was referred to our department by a dermatologist after a series of unsuccessful treatments, including antibiotics. Diffuse radiolucency on a preoperative radiograph revealed that earlier root canal treatment had been only partially successful. Consequently, we performed retreatment of the root canal comprising removal of the former restoration and gutta-percha, cleaning and shaping, and passive irrigation with sodium hypochlorite. The patient responded well, and the cutaneous lesion completely resolved uneventfully within 1 month postoperatively. Preoperative recognition and thorough knowledge of the root canal anatomy and conventional methods of obturation are necessary in performing successful endodontic treatment.

Successful Root Canal Treatment of an Atypical Mandibular Canine with a Boomerang-shaped Root and Canal System with a Large Periapical lesion—A Case Report with 9-year Follow-up

“…Morphoanatomic variations of teeth with complex root canal patterns can pose challenges while performing root canal treatment. Lack of knowledge of root canal anatomy prior to the treatment can lead to iatrogenic errors such as missed canals 21 , strip perforations in danger zones 22 , instrument fracture 23 , incomplete disinfection, and poor canal shaping and filling 24 , which can ultimately affect the long-term treatment outcome.…”

Fístula cutânea odontogênica: relato de um caso clínico após múltiplos diagnósticos errôneos

“…Somente após 1 ano de desenvolvimento da lesão periapical, com uma nova tomada radiográfica panorâmica, o pode ser indicada 8 . Considerando sempre que um dente deve ser extraído apenas quando se apresenta não restaurável, pois a manutenção dos dentes naturais preserva a função, a integridade do arco, a estabilidade oclusal e a estética, além de eliminar a necessidade de procedimentos onerosos 14 . As ondulações e hiperpigmentação da pele geralmente diminuem lentamente e às vezes, permanece uma cicatriz ou uma pequena depressão.…”