Fayek Marco Malak, Amer Maha Eshak, Bakry Ahmed Mohamed
Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Minia University, Minia, Egypt.
Imaging Sci Dent. 2021 Mar;51(1):35-40. doi: 10.5624/isd.20200146. Epub 2021 Jan 28.
This study was conducted to evaluate the accuracy of cone-beam computed tomography (CBCT) in detecting the posterior superior alveolar (PSA) artery canal in a sample of the Egyptian population.
CBCT images of 600 maxillary sinuses of patients were examined for the presence or absence of the PSA artery along the lateral wall of the maxillary sinus, and for the diameter and type of the canal in relation to age and sex. The distances from the canal to the alveolar crest and sinus floor were also measured. Each canal was assessed to determine whether it was bifid.
The PSA artery canal could be detected in 92.0% of the sinuses. The mean distance from the inferior border of the PSA artery canal to the sinus floor was 8.2±2.2 mm (range, 3.2-13.6 mm) in males and 7.3±2.1 mm (range, 3.0-13.1 mm) in females. The mean distance from the inferior border of the PSA artery canal to the alveolar crest was 18.2±2.7 mm (range, 11.0-23.9 mm) in males and 17.4±2.3 mm (range, 10.8-23.5 mm) in females. The mean diameter of the PSA artery canal was larger in male subjects. The PSA artery canal was bifid in 8.7% of cases. The most frequently observed location of the PSA artery canal was intraosseous (82.2%).
CBCT was confirmed to be a valuable tool for evaluation and localization of the PSA artery before maxillary sinus lift surgery to avoid intraoperative bleeding.
本研究旨在评估锥形束计算机断层扫描（CBCT）在检测埃及人群样本中后上牙槽（PSA）动脉管的准确性。
检查600例患者上颌窦的CBCT图像，观察上颌窦外侧壁是否存在PSA动脉，以及管腔的直径和类型与年龄和性别的关系。还测量了管腔至牙槽嵴和窦底的距离。评估每个管腔是否为双叉状。
92.0%的鼻窦中可检测到PSA动脉管。PSA动脉管下缘至窦底的平均距离，男性为8.2±2.2mm（范围3.2 - 13.6mm），女性为7.3±2.1mm（范围3.0 - 13.1mm）。PSA动脉管下缘至牙槽嵴的平均距离，男性为18.2±2.7mm（范围11.0 - 23.9mm），女性为17.4±2.3mm（范围10.8 - 23.5mm）。男性受试者的PSA动脉管平均直径更大。8.7%的病例中PSA动脉管为双叉状。PSA动脉管最常见的位置是骨内（82.2%）。
CBCT被证实是上颌窦提升手术前评估和定位PSA动脉以避免术中出血的有价值工具。
