Mardinger O, Abba M, Hirshberg A, Schwartz-Arad D
Tel-Aviv University Savion, Israel.
Int J Oral Maxillofac Surg. 2007 Aug;36(8):735-8. doi: 10.1016/j.ijom.2007.05.005. Epub 2007 Jul 12.
The aim of the study was to characterize the prevalence, diameter and course of intraosseous anastomosis between the posterior superior alveolar artery and the infraorbital artery (bony canal) involved in the sinus floor augmentation procedure. Data from 208 sinuses were analyzed from reconstructed computed tomography (CT) images. The presence of the intraosseous anastomosis in the lateral antral wall was detected using sagittal plane sections, in addition, the intraosseous course and the diameter of the bony canal were examined. The bony canal was identified in 114 (55%) of the 208 maxillary sinuses, with a mean distance of 16.9 mm from the alveolar ridge. From the examined canals, in 7% the diameter was 2-3 mm wide, in 22% 1-2 mm and in 26% it was less than 1 mm wide. Because only in 50% of cases the vessel was large enough to be detected by a CT scan, it is recommended, to place the superior border of the osteotomy up to 15 mm from the alveolar crest in A to C type ridges to avoid penetration of the artery.
本研究的目的是描述在上颌窦底提升手术中，后上牙槽动脉与眶下动脉（骨管）之间骨内吻合的发生率、直径及走行。对208个鼻窦的重建计算机断层扫描（CT）图像数据进行分析。使用矢状面断层扫描检测外侧窦壁骨内吻合的存在，此外，还检查骨管的骨内走行和直径。在208个上颌窦中的114个（55%）中发现了骨管，距牙槽嵴的平均距离为16.9mm。在所检查的骨管中，7%的直径为2 - 3mm宽，22%为1 - 2mm，26%小于1mm宽。由于只有50%的病例中血管大到足以被CT扫描检测到，因此建议在A至C型牙槽嵴中，将截骨术的上边界置于距牙槽嵴顶15mm处，以避免动脉穿破。
