Khojastehpour L, Dehbozorgi M, Tabrizi R, Esfandnia S
Department of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Department of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Int J Oral Maxillofac Surg. 2016 Mar;45(3):354-8. doi: 10.1016/j.ijom.2015.09.018. Epub 2015 Nov 11.
The purpose of this study was to examine the diameter, location, and frequency of the appearance of the posterior superior alveolar artery (PSAA) in preoperative cone beam computed tomography (CBCT) scans. Two hundred and eleven pre-implant CBCT scans were reviewed. The following criteria were considered in all subjects: (1) the location of the artery: intra-sinus or below the membrane (type I), intraosseous (type II), or superficial (type III); (2) the distance between the lower border of the artery and the alveolar crest; (3) the bone height measured from the floor of the sinus to the crest of the ridge; (4) the distance from the lateral wall of the artery to the medial wall of the maxillary sinus; and (5) the diameter of the artery (in millimetres). The distance between the artery and the medial sinus wall, as well as the diameter of the artery, were greater in patients with an alveolar bone height ≤10mm than in those with a bone height >10mm. The distance from the artery to the medial sinus wall and the diameter of the artery were positively correlated with the number of missing teeth. It was also found that the diameter of the PSAA increased with increasing age.
本研究的目的是在术前锥形束计算机断层扫描（CBCT）中检查后上牙槽动脉（PSAA）的直径、位置及出现频率。回顾了211例种植前CBCT扫描。所有受试者均考虑以下标准：（1）动脉位置：窦内或膜下（I型）、骨内（II型）或表浅（III型）；（2）动脉下缘与牙槽嵴之间的距离；（3）从窦底至牙槽嵴测量的骨高度；（4）动脉侧壁至上颌窦内侧壁的距离；（5）动脉直径（以毫米为单位）。牙槽骨高度≤10mm的患者，动脉与窦内侧壁之间的距离以及动脉直径，均大于骨高度>10mm的患者。动脉至窦内侧壁的距离及动脉直径与缺失牙数量呈正相关。还发现，PSAA的直径随年龄增长而增大。
