314例上颌窦骨间隔的锥形束CT影像学研究

Cone beam CT study for the bone septum of maxillary sinus in Chinese Han

目的研究汉族人群上颌窦骨间隔的发生情况。方法收集拍摄了上颌窦锥形束CT的患者314例,设定双侧上颌窦为研究区域,在软件中重建三维图像,选取轴面、冠状面、矢状面3个窗口同时显示的界面,观察两侧上颌窦中是否存在骨间隔、骨间隔的高度和位置。结果在314例患者中有108例出现骨间隔,发生率为34.4%,在628个上颌窦中有140个出现骨间隔,发生率为22.3%,在上颌窦中部骨间隔的发生率最高,占52.4%,骨间隔高度(7.8±3.2)mm。不同性别、年龄段、牙缺失情况的患者骨间隔发生率差异无统计学意义。结论锥形束CT能够全面反映上颌窦的解剖结构,为临床操作提供指导。

Objective To observe the condition of hone septum in maxillary sinus in Chinese Han. Methods The cone beam CT images filmed for various reasons were collected, in which 314 eases were selected according to the inclusion criteria. Bilateral maxillaD＇ sinuses were set as the study region and three-dimensional images were rebuilt through software. Images with axial plane, coronal plane and sagittal plane clearly displayed simultaneously were observed to identify whether there was presence of bone septum as well as the height and position of the septum. Results Of the 314 patients, 108 patients presented bone septum, resulting in a 34.4% oeeurrence rate; in a total of 628 maxillary sinuses, hone septum was identified in 140 maxillary sinuses, exhibiting an occurrence rate of 22.3%. The highest occurrence rate of bone septum, which was 52.4% , appeared in the central part of maxillary sinus, the average height of bone septurn was （7.8 ± 3.2 ） mm; the comparison of occurrence rate between different gender groups, age groups, and tooth loss groups showed no significant difference. Conclusion Cone beam CT could demonstrate the anatomical structure of may illary sinus comprehensively and provide guidance for clinical practice.