Sakhdari Shirin, Khalilak Zohreh, Najafi Elham, Cheraghi Rezvaneh
Assistant Professor, Department of Oral & Maxillofacial Radiology, Maxillofacial Research Center,Islamic Azad University, Dental Branch, Tehran- Iran.
Associate Professor, Department of Endodontics, Islamic Azad University, Dental Branch, Tehran- Iran.
J Dent Res Dent Clin Dent Prospects. 2015 Winter;9(1):18-22. doi: 10.15171/joddd.2015.004. Epub 2015 Mar 4.
Background and aims. Early diagnosis of external root resorption is important for accurate treatment. The purpose of this study was to compare the efficacy of a charge-coupled device (CCD) sensor and a photostimulable phosphor (PSP) plate receptor in the diagnosis of artificial external root resorption. Materials and methods. In this diagnostic in-vitro study, 40 maxillary incisors were mounted in a segment of dry bone and preliminary radiographs were obtained using CCD and PSP sensors. Artificial resorption cavities were produced on the middle-third in half of the samples and on the cervical-third in the other half on the buccal root surfaces. Radiographs were repeated and images were evaluated. Data were statistically analyzed using chi-square and diagnostic tests. Results. There were no significant differences between the two sensors in the sensitivity (p=0.08 and 0.06) and specificity (p=0.13) for the diagnosis of resorption in both root areas. The overall accuracy of CCD was higher than PSP sensor; however, the difference was not statistically significance (p>0.05). Conclusion. CCD and PSP sensors chosen for the present study produced similar results in diagnosing simulated external root resorption.
背景与目的。早期诊断牙根外吸收对于准确治疗很重要。本研究的目的是比较电荷耦合器件（CCD）传感器和光激励荧光板（PSP）感受器在诊断人工牙根外吸收中的效果。材料与方法。在这项体外诊断研究中，将40颗上颌切牙安装在一段干燥骨中，并使用CCD和PSP传感器获取初步X线片。在一半样本的颊侧牙根表面中三分之一处制作人工吸收腔，在另一半样本的颊侧牙根表面颈三分之一处制作人工吸收腔。重复拍摄X线片并对图像进行评估。使用卡方检验和诊断试验对数据进行统计学分析。结果。在两个牙根区域的吸收诊断中，两种传感器在敏感性（p=0.08和0.06）和特异性（p=0.13）方面均无显著差异。CCD的总体准确性高于PSP传感器；然而，差异无统计学意义（p>0.05）。结论。本研究中选择的CCD和PSP传感器在诊断模拟牙根外吸收时产生了相似的结果。
