使用锥形束 CT 和口腔内射线照相术检测牙周骨损失。
Detection of periodontal bone loss using cone beam CT and intraoral radiography.
机构信息
Dental School, Federal University of Goiás, Brazil.
出版信息
Dentomaxillofac Radiol. 2012 Jan;41(1):64-9. doi: 10.1259/dmfr/13676777.
OBJECTIVE
The aim of this study was to compare periapical radiographs with cone beam CT (CBCT) imaging in detecting and localizing alveolar bone loss by comparing linear measurements of the height, depth and width of the defects and identifying combined bone defects in tomographic images.
METHODS
The images were selected from a secondary database containing images of patients referred for periodontal evaluation. The sample consisted of 51 sites showing both horizontal and vertical bone loss, assessed by 3 trained examiners.
RESULTS
The results showed that there were no statistically significant differences between the imaging methods in terms of identification of the pattern of bone loss. However, there were differences between the two methods when the distance between the cemento-enamel junction (CEJ) and the alveolar crest (AC) was measured. When the distance between the CEJ and the deepest point and width of the defect were measured, the methods showed no statistically significant difference. In this study, 30.8% of the 39 teeth evaluated had combined bone defects.
CONCLUSIONS
The two methods differ when detecting the height of the alveolar bone crest but present similar views of the depth and width of bone defects. CBCT was the only method that allowed for an analysis of the buccal and lingual/palatal surfaces and an improved visualization of the morphology of the defect.
目的
本研究旨在通过比较根尖片和锥形束 CT（CBCT）成像在检测和定位牙槽骨丧失方面的差异，比较缺陷高度、深度和宽度的线性测量值，并在断层图像中识别联合骨缺损，从而评估这两种影像学方法。
方法
从一个包含牙周评估患者图像的二级数据库中选择图像。样本由 3 名经过培训的检查者评估的 51 个显示水平和垂直骨丧失的部位组成。
结果
结果显示，两种成像方法在识别骨丧失模式方面无统计学差异。然而，在测量釉牙骨质界（CEJ）和牙槽嵴（AC）之间的距离时，两种方法存在差异。当测量 CEJ 和缺陷最深处之间的距离以及缺陷的宽度时，两种方法无统计学差异。在这项研究中，评估的 39 颗牙齿中有 30.8%存在联合性骨缺损。
结论
两种方法在检测牙槽嵴高度方面存在差异，但在骨缺损的深度和宽度方面呈现相似的观点。CBCT 是唯一允许分析颊侧和舌/腭侧表面并改善缺陷形态可视化的方法。
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