Measurement of Distances between Anterior Mandibular Structures in Thai Patients and Osteotomy Recommendation: A Cone Beam Computed Tomography Analysis
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Abstract
Objective: The primary objective is to measure distances between key anatomical landmarks in the anterior mandible of Thai adults and analyze variations based on sex and skeletal classification using Cone-Beam Computed Tomography (CBCT. The secondary objective is to establish normative data for this region among the Thai population.
Materials and Methods: An observational study was conducted using CBCT scans from Thai adults with all lower anterior teeth present. Measurements focused on the distances from the inferior mandibular border to the genial tubercles and the anterior loop among others.
Results: A total of 186 CBCT scans were analyzed. No significant differences were found between left and right sides. Males showed significantly greater measurements than females (P≤0.021), except at the central incisor apex to genial tubercle (P=0.073, 0.192). No significant differences were observed among skeletal classes (P=0.099–0.987).
Conclusion: This study identified significant gender-related anatomical differences in the anterior mandible, with consistently greater measurements in males, while no significant differences were observed among skeletal classes. Based on these findings, recommended osteotomy safety margins from the inferior border are 19 mm in men and 17–17.5 mm in women for the midline and lateral incisor regions, and 15 mm in men and 13.5 mm in women for the canine region. Fixed safety margins are not recommended in the anterior loop area due to anatomical variability; therefore, individualized CBCT assessment is strongly advised. These reference values may enhance surgical safety in anterior mandibular procedures.
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บทความ ข้อมูล เนื้อหา รูปภาพ ฯลฯ ที่ได้รับการลงตีพิมพ์ในวิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่นถือเป็นลิขสิทธิ์เฉพาะของคณะทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น หากบุคคลหรือหน่วยงานใดต้องการนำทั้งหมดหรือส่วนหนึ่งส่วนใดไปเผยแพร่ต่อหรือเพื่อกระทำการใด ๆ จะต้องได้รับอนุญาตเป็นลายลักษณ์อักษร จากคณะทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่นก่อนเท่านั้น
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