Frequency of Second Mesiobuccal Canals in Maxillary First Molar using Cone Beam Computed Tomography in Libyan Subpopulation in Zliten city

This study was conducted to evaluate the frequency of Second Mesiobuccal Canals (MB2) in maxillary first molar teeth of a Libyan subpopulation in Zliten city, and to assess the presence of MB2 based on gender and location using Cone Beam Computed Tomography. The study was a retrospective study done by screening 764 CBCT (X-MIND Prime®3D – Acteon software), with patients being came routinely to Al-Tasneem Private Dental Ploy-clinic in Zliten city during the period from July 2023 until June 2024. Two hundred seventy-three teeth of this study (62.6%) were female; whereas 163 (37.4%) were male. About 48% of these maxillaries first molar teeth were right, while 52% were left teeth. The age of patients in present study were between 13 and 84 years old. The frequency of MB2 of maxillary first molar in Libyan subpopulation in Zliten city were 77.5%. Although there was no significant statical differences in frequency of MB2 between the male and female; the occurrence of MB2 in maxillary first molar teeth were higher in male with (80.4%) than in female with (75.8%). In the current study although there was no significant statical differences in frequency of MB2 between the left and right occurrence of MB2 of maxillary first molar, which was slightly higher in the left side with (51.77%) than the right side with (48.22%). The incidences of MB2 in maxillary first molar teeth of a Libyan subpopulation in Zliten city were 77.5%. The three separated roots were in 100% of teeth. The frequency of MB2 in male was greater on the right side compared with the left, whereas incidences of MB2 in female were higher in the left side than the right side. The age group of 21-40 years old had the greatest rates of MB2