Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Kocaeli University, Kocaeli, Turkey.
Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Kocaeli University, Kocaeli, Turkey.
J Stomatol Oral Maxillofac Surg. 2023 Feb;124(1):101260. doi: 10.1016/j.jormas.2022.08.003. Epub 2022 Aug 7.
The aim of this study was to evaluate radiomorphometric differences of mandibular foramen (MF), lingula (Li), and anti-lingula (AL) between prognathic and non-prognathic patients, using cone-beam computed tomography (CBCT).
A total of 228 3D CBCT images of 57 prognathic and 57 non-prognathic patients were retrospectively evaluated. The distances between MF or Li to occlusal plane (OP), anterior border of ramus (AR), posterior border of ramus (PR), sigmoid notch (SN), gonion (Go) and distances Li to MF were measured. The presence of AL, and the distances to Li were also assessed in both groups.
In prognathic patients the mean distances of MF-AR and Li-PR were lesser, and Li-OP was greater (p < 0.05). However, distances from MF or Li to the other ramal landmarks were similar in both groups (p > 0.05). Presence of AL was found at 53 sides in prognathic and 20 sides in non-prognathic groups (p < 0.05). The horizontal distance of Li-MF was greater in prognathic patients (p < 0.05). On the other hand, there was no difference between groups regarding the horizontal distance of Li-Al, and the vertical distances of Li-MF and Li-AL (p > 0.05).
The present study provided valuable data regarding morphological differences of MF-AR, Li-MF and Li-OP, which should be considered in the preoperative assessment of patients with mandibular prognathism. Presence of AL was more common in prognathic patients and mainly located above Li. 3D CBCT applications facilitated assessment of AL and its relationship with Li.
本研究旨在通过锥形束 CT（CBCT）评估下颌孔（MF）、下颌舌骨嵴（Li）和反下颌舌骨嵴（AL）在正颌患者和非正颌患者之间的放射形态差异。
回顾性分析了 57 例正颌患者和 57 例非正颌患者的 228 例 3D CBCT 图像。测量 MF 或 Li 与咬合平面（OP）、下颌支前缘（AR）、下颌支后缘（PR）、乙状切迹（SN）、下颌角（Go）的距离以及 Li 与 MF 的距离。评估两组患者 AL 的存在情况及其与 Li 的距离。
在正颌患者中，MF-AR 和 Li-PR 的平均距离较小，Li-OP 的距离较大（p < 0.05）。然而，MF 或 Li 到其他下颌支标志点的距离在两组间相似（p > 0.05）。在正颌组中，53 侧存在 AL，而非正颌组中仅 20 侧存在 AL（p < 0.05）。正颌患者的 Li-MF 水平距离较大（p < 0.05）。另一方面，两组间 Li-Al 的水平距离、Li-MF 和 Li-AL 的垂直距离无差异（p > 0.05）。
本研究提供了有关 MF-AR、Li-MF 和 Li-OP 形态差异的有价值数据，这些数据应在下颌前突患者的术前评估中考虑。AL 在正颌患者中更为常见，主要位于 Li 上方。3D CBCT 应用有助于评估 AL 及其与 Li 的关系。
