Incidence of Second Mesiobuccal Canal in Maxillary Second Molar Teeth Using Cone Beam Tomography in Libyan Subpopulation at Zliten City: A Retrospective Study

This study was carried out to estimate the incidences of second mesiobuccal canals (MB2) in maxillary second molar teeth of a Libyan subpopulation in Zliten city, and to evaluate the frequency of MB2 based on location, gender, and patient age using Cone Beam Computed Tomography. Out of 1180 CBCT images taken from routine Libyan patients at Al-Tasneem private Poly-Clinics in Zliten city since May 2023 until December 2024, only 769 Images met the inclusion criteria. 389 CBCT images of the current study (50.6%) were right teeth. 471 of CBCT images (61.25%) correlated to female patients, while two hundred ninety-eight images (38.75%) related to male patients. The patients' ages ranged between 17 and 83 years. The prevalence of second mesiobuccal canals of maxillary second molar teeth in the Libyan subpopulation was 60.5%. There was no significant statistical variance in the occurrence of MB2 between the right and left occurrence of second mesiobuccal canals in maxillary second molars, the result was found to be approximately equal, with 50.6% and 49.4%, respectively. The incidences of MB2 were slightly higher in males than females (with 61.4% and 60%, respectively), and as such, the total incidence of MB2 canals was found to be 60.5%. The incidence of MB2 in maxillary second molar teeth in the Libyan subpopulation at Zliten city was 60.5%. Total bilateral incidences of MB2 were 74%; the bilateral occurrences of MB2 were higher in females than in males. The three-rooted maxillary second molar teeth were 94.8%.