Endodontic anatomy of the lower canine.

Patient came to the clinic complaining of mild biting pain in the region of teeth 43 and 44. On clinical examination, pain on palpation and percussion test in that region. Radiographic examination showed unsatisfactory endodontic treatment and diffuse periapical radiolucent image on teeth 33 and 34. The periapical diagnosis was then symptomatic apical periodontitis. Desobturation, PDT and Bio C Temp medication placement was performed on both teeth. The patient only returned 3 months later, when radiographic repair of the area was observed and obturation was then performed.

Case performed by students Jonas and Marcela from the Specialization in Endodontics of APCD Bragança Paulista.

Endodontic anatomy of the lower canine. In: Machado, Ricardo. Endodontics: Biological and Technical Principles. Grupo GEN, 2022.

Introduction
The study and knowledge of the internal morphological and anatomical characteristics of teeth are important not only for endodontists, but also for every dental surgeon. Iatrogenies are also committed in areas such as Dentistry, Prosthodontics and Surgery, due to the lack of discernment of professionals regarding the number, shape, direction and length of roots and root canals in the different dental groups.

Technological resources such as cone beam computed tomography and the operating microscope have minimized the occurrence of errors and accidents, since they provide the professional with more accurate planning and better visualization of the working field, respectively. Still, it is necessary to know the internal dental morphology and anatomy to avoid complications during the performance of endodontic treatments, preparations for use of intraradicular retainers, endodontic surgeries, etc.

The complexity of the dental internal anatomy has been demonstrated since the classic studies of Hess and Pucci and Reig, using techniques of diaphanization, serial sections and radiographic analysis. Even with the meager resources of the time, these studies already demonstrated the existence of a true root canal system. Nowadays, tomography and mainly computerized microtomography are the most accurate tools for the study of the internal and external dental anatomy.

Endodontic anatomy. Inferior canines
Like the incisors of the same arch, they have a flattened root in the mesiodistal direction and wide in the opposite direction (vestibulolingual). In general, canals also present these characteristics. This mesiodistal flattening favors the occurrence of two canals or two roots, one vestibular and one lingual.

In lower incisors and canines, when two canals are suspected, it is important to perform periapical radiographs applying the concepts of Clark's technique. Changes in horizontal angulation may help in the diagnosis. It is also important to point out that in these cases, the most easily found canal is almost always the buccal one.

Endodontic anatomy of the lower canine.

https://www.youtube.com/watch?v=cSUlijHIAlw

https://ferrariendodontia.com.br/tratamento-endodontico-calcificacao-canino/