Department of Stomatology, School of Dentistry, University of São Paulo.
Braz Oral Res. 2012 Jul-Aug;26(4):341-7. doi: 10.1590/s1806-83242012000400010.
The aim of the present study was to test the reproducibility, sensitivity, and specificity of cone-beam computed tomography (CBCT) in detecting incipient furcation involvement. Fifteen macerated pig mandibles, with intact second molar teeth and preserved adjacent cortical areas, were used. Simulated lesions were created in the furcation region of these teeth by applying 70% perchloric acid in up to four possible buccal/lingual sites in the right/left sides of each mandible. The mandibles were then submitted to a CBCT scan. Two blinded and calibrated experienced oral and maxillofacial radiologists interpreted the exams. Furcation involvement was also assessed in the regions without simulated lesions. CBCT showed high levels of accuracy, ranging from 78% to 88%. The variations in Kappa values for intra- and inter-observer agreement (0.41-0.59) were considered moderate. CBCT can be considered a reliable and accurate method for detecting incipient furcation involvement.
本研究旨在测试锥形束 CT（CBCT）在检测早期分叉受累方面的重现性、敏感性和特异性。使用了 15 个猪下颌骨标本，这些标本的第二磨牙完整，相邻皮质区域保存完好。通过在每个下颌骨的右侧/左侧的多达四个可能的颊/舌部位施加 70%高氯酸，在这些牙齿的分叉区域创建模拟病变。然后将下颌骨进行 CBCT 扫描。两位经过培训和校准的经验丰富的口腔颌面放射科医生对检查结果进行了盲法和校准。还评估了没有模拟病变的区域的分叉受累情况。CBCT 显示出较高的准确性水平，范围为 78%至 88%。观察者内和观察者间一致性的 Kappa 值变化（0.41-0.59）被认为是中等的。CBCT 可以被认为是一种可靠且准确的方法，用于检测早期分叉受累。
