The mandibular canal (MC) can present anatomical variations that are important to know when planning mandibular surgery. Cone Beam Computed Tomography (CBCT) is a current imaging exam with a high level of precision and detail. The importance of this work lies in informing and encouraging dental surgeons to seek knowledge of the anatomy and the precise diagnosis of its alterations, using three-dimensional CBCT images to facilitate the planning, diagnosis and resolution of clinical cases, providing greater comfort for the patient and minimizing the possibility of errors and complications.