Department of Prosthodontics, College of Dentistry, Yonsei University, Seodaemum-gu, Seoul, Korea.
Implant Dent. 2011 Aug;20(4):306-10. doi: 10.1097/ID.0b013e31822634bd.
The purpose of this study was to elucidate the differences of the prevalence and diameter of the posterior superior alveolar artery (PSAA) and the distance of its inferior border from the alveolar crest on computed tomography (CT) images according to age and sex.
CT images of maxilla in 200 patients were randomly selected from patients who underwent CT imaging at Yonsei University Dental Hospital, and analyzed. The prevalence of the PSAA in maxillary sinus and the distance of its inferior border from the alveolar crest in the premolar and molar area were measured.
The average prevalence of the PSAA on CT images was 52.0%, and it is higher in males (64%) than in females (40%). The diameter of the PSAA was 1.52 ± 0.47 mm (mean ± SD), and larger in males. The distance from the PSAA to the alveolar crest was greater in the premolar area (18.90 ± 4.21 mm) than in the molar area (15.45 ± 4.04 mm), and it did not differ significantly with age or sex.
The prevalence of the PSAA on CT images was higher, and the diameter was larger in males. The PSAA was more close to the alveolar crest in the molar areas. The evaluation of the PSAA in maxillary sinus on CT images before surgery could reduce the likelihood of excess bleeding during surgery especially in molar areas.
本研究旨在阐明在上颌窦 CT 图像上，后上牙槽动脉（PSAA）的出现率、直径及其下缘与牙槽嵴的距离在年龄和性别方面的差异。
从在延世大学牙科医院接受 CT 成像的患者中随机选择 200 名患者的上颌 CT 图像，并进行分析。测量上颌窦中 PSAA 的出现率以及前磨牙和磨牙区牙槽嵴下 PSAA 下缘的距离。
CT 图像上 PSAA 的平均出现率为 52.0%，男性（64%）高于女性（40%）。PSAA 的直径为 1.52 ± 0.47mm（平均值 ± 标准差），男性较大。PSAA 到牙槽嵴的距离在前磨牙区（18.90 ± 4.21mm）大于磨牙区（15.45 ± 4.04mm），但与年龄或性别无关。
CT 图像上 PSAA 的出现率较高，男性的直径较大。PSAA 在磨牙区更接近牙槽嵴。术前对上颌窦 CT 图像中 PSAA 的评估可以降低手术中过度出血的可能性，特别是在磨牙区。
