Çımen, TansuSaka, Yunus YiğitKayacan Ünel, HelinDuruel, Onurcem2026-01-242026-01-242025https://doi.org/10.15311/selcukdentj.1706374https://hdl.handle.net/20.500.12868/4504Background: Some anatomical variations, such as accessory mental foramen (AMF) should be considered to prevent clinical complications. This study aimed to assess the AMF via cone beam computed tomography (CBCT) and evaluate its relationship with the mental foramen (MF). Methods: Of 244 CBCT images, the AMF and MF diameter, AMF number, MF– crest distance, MF–mandibular basis distance, AMF–crest distance, and AMF– mandibular basis distance were measured. Results: The prevalence of AMF was 9.4% with a total of 46. The diameters of the first and second AMFs were 0.67 ± 0.28 mm and 0.56 ± 0.11 mm on the right, 0.68 ± 0.23 mm and 0.46 ± 0.11 mm on the left, respectively. MF diameters were 2.06 ± 1.37 mm (right side) and 1.91 ± 0.45 mm (left side). The AMF–crest distances for the first and second AMFs were 15.18 ± 2.77 mm and 13.5 ± 2.0 mm (right side), 13.90 ± 3.01 mm and 12.23 ± 0.9 mm (left side), respectively. Some patients had multiple foramina in the area surrounding the MF. First and second AMF–mandibular basis distances were 16.63 ± 2.64 mm and 14.13 ± 4.36 mm (right side), 13.14 ± 2.4 mm and 14.40 ± 3.21 mm (left side). Conclusion: Considering the presence of AMFs during surgical procedures and local anesthesia is critical. It may be damaged during surgical operations. CBCT is a useful method for determining the presence of AMFs to prevent possible complications. © 2025, Selcuk University. All rights reserved.eninfo:eu-repo/semantics/openAccessAccessory mental foramenCBCTMental foramenArticle10.15311/selcukdentj.17063741222302332-s2.0-105014780491N/A