Accuracy of digital periapical radiography and cone-beam computed tomography in detecting external root resorption
Accuracy of digital periapical radiography and cone-beam computed tomography in detecting external root resorption
复制标题
DOI：
10.5624/isd.2015.45.3.153
复制
发表时间：
2015-09-01
影响因子：
1.8
通讯作者：
Noujeim, Marcel
中科院分区：
文献类型：
--
作者：
Creanga, Adriana Gabriela;Geha, Hassem;Noujeim, Marcel
目的：本研究的目的是评估和比较锥形束计算机断层扫描（CBCT）和数字口内x线摄影在模拟小外根吸收腔中的诊断效果。材料和方法：用小球型钻在159根的不同根位和所有表面上钻洞。采用口腔内数字x线摄影（图像板）和CBCT对牙齿进行成像。每颗牙获得两组口腔内图像：正交（PA），即传统的根尖周x线片和中角化（SET）。四名读者被要求评估他们在检测和定位病变方面的信心水平。进行受试者工作特征（ROC）分析，以评估每种模式在检测病变存在、受影响表面和受影响程度方面的准确性。变异分析用于比较结果，kappa分析用于评价观察者间的一致性。结果：三种方式的ROC曲线下面积差异有统计学意义（P= 0.0002）， CBCT（0.81）值明显高于PA（0.71）或SET（0.71）值。PA的准确率略高于SET，但差异无统计学意义。CBCT在确定病变面和程度上也有优势。结论：CBCT在多种牙病的检测上已经证明了其优越性，本研究表明CBCT在检测和定位初发外根吸收方面同样具有优越性。
Purpose: The purpose of this study was to evaluate and compare the efficacy of cone-beam computed tomography (CBCT) and digital intraoral radiography in diagnosing simulated small external root resorption cavities.Materials and Methods: Cavities were drilled in 159 roots using a small spherical bur at different root levels and on all surfaces. The teeth were imaged both with intraoral digital radiography using image plates and with CBCT. Two sets of intraoral images were acquired per tooth: orthogonal (PA) which was the conventional periapical radiograph and mesioangulated (SET). Four readers were asked to rate their confidence level in detecting and locating the lesions. Receiver operating characteristic (ROC) analysis was performed to assess the accuracy of each modality in detecting the presence of lesions, the affected surface, and the affected level. Analysis of variation was used to compare the results and kappa analysis was used to evaluate interobserver agreement.Results: A significant difference in the area under the ROC curves was found among the three modalities (P= 0.0002), with CBCT (0.81) having a significantly higher value than PA (0.71) or SET (0.71). PA was slightly more accurate than SET, but the difference was not statistically significant. CBCT was also superior in locating the affected surface and level.Conclusion: CBCT has already proven its superiority in detecting multiple dental conditions, and this study shows it to likewise be superior in detecting and locating incipient external root resorption.