Kumngern Phattaraphon, Panyarak Wannakamon, Powcharoen Warit
Graduate School, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.
Division of Oral and Maxillofacial Radiology, Department of Oral Biology and Oral Diagnostic Science, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.
Oral Maxillofac Surg. 2025 Jan 31;29(1):48. doi: 10.1007/s10006-025-01347-1.
To investigate the anatomical variations and measure the distances between surgically relevant structures in the maxilla associated with Le Fort I osteotomy in patients with maxillary canting using cone beam computed tomography (CBCT).
CBCT scans of 63 patients (21 males and 42 females) with maxillary canting who were indicated for orthognathic surgical planning were retrospectively investigated and analyzed. The distances of the relevant anatomical structures, including the descending palatine artery, pterygomaxillary junction, infraorbital foramen, and nasolacrimal duct opening, were measured with the key anatomical landmarks to evaluate their variations. The independent correlations of measurements with magnitude of canting were examined, considering a 5% significance level.
Among the 63 patients, the mean vertical difference of maxillary canting was 3.26 ± 0.98 mm and 3.62° ± 1.09°. The descending palatine artery differed significantly in distance between the longer and shorter sides (P < 0.001). Similar significant differences were found in the pterygomaxillary junction distance (P < 0.001), pterygomaxillary junction height (P < 0.001), and infraorbital foramen distance (P = 0.009). Every 1 mm of maxillary canting increases the pterygomaxillary junction distance by 0.1721 mm, pterygomaxillary junction height by 0.2773 mm, infraorbital foramen by 0.3301 mm, and nasolacrimal duct in 0.2255 mm.
Maxillary canting significantly affects the morphometrics of pterygomaxillary junction distance and height, infraorbital foramen, and nasolacrimal duct on the longer and shorter sides. Therefore, these surgical anatomies should be of concern when performing Le Fort I osteotomy in patients with maxillary canting.
Not applicable.
使用锥形束计算机断层扫描（CBCT）研究上颌偏斜患者中与Le Fort I型截骨术相关的上颌骨手术相关结构的解剖变异，并测量这些结构之间的距离。
回顾性研究并分析63例因正颌外科手术计划而接受CBCT扫描的上颌偏斜患者（21例男性和42例女性）。测量包括腭降动脉、翼上颌连接、眶下孔和鼻泪管开口在内的相关解剖结构与关键解剖标志之间的距离，以评估其变异情况。考虑5%的显著性水平，检验测量值与偏斜程度之间的独立相关性。
63例患者中，上颌偏斜的平均垂直差异为3.26±0.98mm和3.62°±1.09°。腭降动脉在较长侧和较短侧的距离差异显著（P<0.001）。翼上颌连接距离（P<0.001）、翼上颌连接高度（P<0.001）和眶下孔距离（P=0.009）也存在类似的显著差异。上颌每偏斜1mm，翼上颌连接距离增加0.1721mm，翼上颌连接高度增加0.2773mm，眶下孔增加0.3301mm，鼻泪管增加0.2255mm。
上颌偏斜显著影响翼上颌连接距离和高度、眶下孔以及较长侧和较短侧鼻泪管的形态测量。因此，在为上颌偏斜患者进行Le Fort I型截骨术时，应关注这些手术解剖结构。
不适用。
