Department of Oral and Maxillofacial Radiology, School of Dentistry, Aichi-Gakuin University, Chikusa-ku, Nagoya, Japan.
Clin Implant Dent Relat Res. 2009 Oct;11 Suppl 1:e52-8. doi: 10.1111/j.1708-8208.2009.00194.x. Epub 2009 May 7.
Septum presence in the maxillary sinus complicates sinus floor elevation surgery, and so it is important that septa are accurately diagnosed on preoperative imaging.
Septa were observed regarding their relationship with the bony palate using cone-beam computed tomography (CT).
Thirty maxillary sinuses with dentate jaws of 15 dry skulls and a cone-beam CT unit were used. A septum was defined as a pointed bone structure, and an exostosis was defined as a rounded bone structure. The occurrence and locations of maxillary sinus septa and exostoses of more than 2 mm in height were evaluated. Also, angles between the direction of septum and median palatine suture were measured on axial images.
Twelve septa of 11 maxillary sinuses (37%) and nine exostoses of nine maxillary sinuses (30%) were observed. Also, 42% of septa and 67% of exostoses were antero-posteriorly aligned according to the transverse palatine suture. Moreover, the mean septum angle was 57.9 degrees in the anterior maxillary sinus region, and 101.8 degrees in the transverse palatine suture region, and significant differences were noted between them.
Maxillary sinus septa and exostoses could be clarified regarding their relationship with the bony palate using cone-beam CT.
上颌窦中隔的存在会使鼻窦底提升手术复杂化，因此在上颌窦术前影像学检查中准确诊断中隔非常重要。
利用锥形束 CT 观察上颌窦中隔与骨性硬腭的关系。
本研究共使用 15 例干颅骨的 30 个有牙颌上颌窦和锥形束 CT 设备。将中隔定义为尖锐骨结构，将外生骨赘定义为圆形骨结构。评估上颌窦中隔和高度超过 2 毫米的外生骨赘的出现和位置。同时，在轴位图像上测量中隔方向与正中腭缝之间的角度。
11 个上颌窦中有 12 个中隔（37%）和 9 个上颌窦中有 9 个外生骨赘（30%）。此外，根据横腭缝，42%的中隔和 67%的外生骨赘呈前后向排列。此外，在前上颌窦区中隔的平均角度为 57.9 度，在横腭缝区为 101.8 度，两者之间存在显著差异。
利用锥形束 CT 可以明确上颌窦中隔和外生骨赘与骨性硬腭的关系。
