Related Experiment Video
Updated: Jan 22, 2026

Guided Endodontics: Three-Dimensional Planning and Template-Aided Preparation of Endodontic Access Cavities
Published on: May 24, 2022
Access to original canal trajectory after deviation and perforation with guided endodontic assistance
Bruna de Athayde Casadei1, Sônia T de O Lara-Mendes2, Camila de Freitas M Barbosa3
1Department of Endodontics, Faculty of Dentistry, Faculdade São Leopoldo Mandic de Belo Horizonte (SLM-Belo Horizonte), Belo Horizonte, Brazil.
Abstract:
Procedural accidents are eventualities that may occur during endodontic treatment because of lack of attention to detail or even unforeseeable situations. Knowledge of the root canal anatomy and its variations is a prerequisite for successful endodontic treatment. This case report describes an endodontic treatment where there was an intercurrence, generating deviation and perforation, which was solved with the aid of guided endodontics. A 37 years old, ASA1, was referred to the clinic for localisation and treatment of a calcified canal of the second right upper premolar. The tomographic images revealed the presence of only one canal and deviation with apical perforation. With the help of CBCT and CAD/CAM, it was possible to perform the guided access technique even after deviation and root perforation. Once again, this technique proved to be safe and predictable, allowing for a favourable prognosis in the long term.
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