在可变体模中比较锥束计算机断层扫描和口腔内X光片用于确定牙周膜的情况。
Comparison of cone-beam computerized tomography and intraoral radiographs for determination of the periodontal ligament in a variable phantom.
作者信息
Jervøe-Storm Pia-Merete, Hagner Martin, Neugebauer Jörg, Ritter Lutz, Zöller Joachim E, Jepsen Søren, Frentzen Matthias
机构信息
Department of Periodontology, Operative and Preventive Dentistry, University of Bonn, Bonn, Germany.
出版信息
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2010 Feb;109(2):e95-101. doi: 10.1016/j.tripleo.2009.10.023.
OBJECTIVES
This in vitro study assessed the visualization quality of the periodontal ligament space in cone-beam computerized tomography (CBCT) compared with intraoral radiographs (CR).
STUDY DESIGN
A phantom mimicking variable periodontal ligament spaces (0-0.42 mm) was radiographed using CBCT and CR. Fifteen datasets of each modality were randomly mixed and presented twice to 19 experienced examiners and once to 19 inexperienced examiners.
RESULTS
Zero-millimeter gaps were recognized in 84.4% of CBCT and in 81.6% of CR images. On CBCT scans, gaps of 0.19 mm were identified with an accuracy of 93%-100% compared with 70.2%-81.7% using CR. Experienced examiners recognized gaps of >or=0.19 mm on CBCT repeatedly with nearly 100% accuracy.
CONCLUSION
Compared with CR, CBCT provides better visualization of simulated periodontal ligament space in this phantom.
目的
本体外研究评估了锥束计算机断层扫描（CBCT）与口腔内根尖片（CR）相比，牙周膜间隙的可视化质量。
研究设计
使用CBCT和CR对模拟不同牙周膜间隙（0 - 0.42毫米）的模型进行影像学检查。每种检查方式的15组数据被随机混合，并向19名经验丰富的检查者展示两次，向19名经验不足的检查者展示一次。
结果
在84.4%的CBCT图像和81.6%的CR图像中可识别出0毫米的间隙。在CBCT扫描中，识别出0.19毫米间隙的准确率为93% - 100%，而使用CR时为70.2% - 81.7%。经验丰富的检查者在CBCT上对≥0.19毫米间隙的识别准确率几乎达到100%。
结论
与CR相比，CBCT在该模型中能更好地显示模拟的牙周膜间隙。
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