Incidence and classification of bifid mandibular canals using cone beam computed tomography|
Freitas, George Borja de; Silva, Alessandra de Freitas e; Morais, Lucas Alexandre; Silva, Milena Bortolotto Felippe; Silva, Thiago Coelho Gomes da & Manhães Júnior, Luiz Roberto Coutinho
Aim: To determine the prevalence and classification of bifid mandibular canals using cone beam
computed tomography (CBCT).
Methods: The sample comprised 300 CBCT scans obtained
from the Radiology and Imaging Department database at São Leopoldo Mandic Dental School,
Campinas, SP, Brazil. All images were performed on Classic I-Cat® CBCT scanner, with
standardized voxel at 0.25 mm and 13 cm FOV (field of view). From an axial slice (0.25 mm) a
guiding plane was drawn along the alveolar ridge in order to obtain a cross-section.
Among 300 patients, 188 (62.7%) were female and 112 (37.3%) were male, aged between 13
to 87 years. Changes in the mandibular canal were observed in 90 patients, 30.0% of the
sample, 51 women (56.7%) and 39 men (43.3%). Regarding affected sides, 32.2% were on the
right and 24.5% on the left, with 43.3% bilateral cases.
Conclusions: According to the results
obtained in this study, a prevalence of 30% of bifid mandibular canals was found, with the most
prevalent types classified as B (mesial direction) and bilateral.
anatomy; mandible; classification