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:: Volume 3, Issue 4 (11-2025) ::
cofs 2025, 3(4): 0-0 Back to browse issues page
CBCT-Based Anatomical and Morphometric Analysis of the Accessory Mental Foramen: a Cross-Sectional Study
Mahshid Botshekan , Azadeh Torkzadeh * , Parisa Ranjbarian , Parisa Barouti
Department of Oral & Maxillofacial Radiology, Faculty of Dentistry, Isf.c, Islamic Azad University, Isfahan, Iran
Abstract:   (77 Views)
Background: One anatomical variation in the mental foramen area is the presence of an accessory mental foramen (AMF). This study aimed to investigate the position and anatomical features of the accessory mental foramen using CBCT imaging.
Materials and methods: This cross-sectional descriptive study analyzed 500 CBCT images (one per patient) to assess the prevalence and characteristics of the accessory mental foramen. Parameters recorded included the patient's gender, location of the accessory mental foramen to the main foramen, number, diameter, and distance between the main and accessory mental foramina. Data were analyzed using SPSS version 27 at a significance level of 0.05, employing the Chi-square test, Fisher's exact test, and independent t-test.
Results: AMF was observed in 3.4% (17 patients). Among them, 70.6%  (12 patients) had bilateral AMF, and 17.6% had unilateral right-sided, and 11.8% had unilateral left-sided AMF.most  accessory mental foramen were positioned apically (86.2%), distally (72.4%), and buccally (89.7%), with the apical-distal-buccal combination (55.2%) being the most common. The prevalence of accessory mental foramen was not significantly associated with gender, mandibular side, or age (p>0.05). However, the mean AMF diameter was significantly greater in men than in women (p=0.003). The mean distance between the main and accessory mental foramina showed no significant gender-related difference (p>0.05).
Conclusion: Based on this study, given the anatomical variability and individual differences in AMF characteristics, CBCT is recommended for accurate identification before periapical or implant surgery to prevent complications such as nerve injury or inadequate anesthesia.


 
     
Type of Study: Research | Subject: Oral & Maxillofacial Radiology
Received: 2025/07/23 | Accepted: 2025/10/5 | Published: 2025/11/28
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Botshekan M, Torkzadeh A, Ranjbarian P, Barouti P. CBCT-Based Anatomical and Morphometric Analysis of the Accessory Mental Foramen: a Cross-Sectional Study. cofs 2025; 3 (4)
URL: http://cofs.khuisf.ac.ir/article-1-114-en.html
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Volume 3, Issue 4 (11-2025) Back to browse issues page
Contemporary Orofacial Science Contemporary Orofacial Science
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