根尖片与锥形束计算机断层扫描在诊断有金属桩牙齿垂直根折中的比较
Comparison of periapical radiography with cone beam computed tomography in the diagnosis of vertical root fractures in teeth with metallic post.
作者信息
Takeshita Wilton Mitsunari, Iwaki Lilian Cristina Vessoni, da Silva Mariliani Chicarelli, Sabio Sergio, Albino Paulo Ricardo Febrairo
机构信息
Department of Dentistry, Federal University of Sergipe, Aracaju - Sergipe, Brazil.
Department of Dentistry, State University of Maringá, Brazil.
出版信息
J Conserv Dent. 2014 May;17(3):225-9. doi: 10.4103/0972-0707.131781.
Abstract
AIM
To compare the diagnostic accuracy of conventional periapical radiography and cone beam computed tomography (CBCT) in detecting vertical root fracture (VRF) in tooth with metallic post (MP).
MATERIALS AND METHODS
Twenty endodontically-treated teeth received MPs, artificial fractures were created in 10 teeth, and they were all examined with tomography and radiography. The sample consisted of periapical radiography with post and without post, and tomography with post and without post; each group with five fractured and five non-fractured teeth. The images were evaluated by three dental/maxillofacial radiologists and statistical validations were carried out using receiver operating characteristic (ROC) analysis.
RESULTS
Sensitivity and specificity of the area under the ROC (Az) of tomography with post (Az = 0.953) and without post (Az = 0.956) were significantly higher than those of periapical radiography with post (Az = 0.753) and without post (Az = 0.778).
CONCLUSION
CBCT was more accurate than conventional periapical radiography in detecting VRF.
摘要
目的
比较传统根尖片和锥形束计算机断层扫描（CBCT）在检测有金属桩（MP）牙齿的垂直根折（VRF）方面的诊断准确性。
材料与方法
20颗经过根管治疗的牙齿植入金属桩，其中10颗牙齿制造人工根折，所有牙齿均接受断层扫描和根尖片检查。样本包括有桩和无桩情况下的根尖片，以及有桩和无桩情况下的断层扫描；每组有5颗根折牙和5颗未根折牙。图像由三名口腔/颌面放射科医生评估，并使用受试者操作特征（ROC）分析进行统计学验证。
结果
有桩断层扫描（Az = 0.953）和无桩断层扫描（Az = 0.956）的ROC曲线下面积（Az）的敏感性和特异性显著高于有桩根尖片（Az = 0.753）和无桩根尖片（Az = 0.778）。
结论
在检测垂直根折方面，CBCT比传统根尖片更准确。
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