Sewerin I
Scand J Dent Res. 1980 Oct;88(5):377-81. doi: 10.1111/j.1600-0722.1980.tb01242.x.
The purpose of the present study was to elucidate the possible significance of the radiopacity of a composite restorative material for the radiographic identification of filling deficiencies. Class III cavities of varied size and shape were prepared at 28 proximal surfaces of 14 extracted human canines. All cavities were filled with Adaptic Radiopaque. Simulated secondary or recurrent carious lesions were produced in 16 of the cavities by insertion of small amounts of radiolucent wax prior to filling. Each tooth was radiographed under standardized conditions using 15 different angulations. The 210 radiographs were interpreted by three observers without knowledge of the distribution of the deficiencies. They made 78.7% correct diagnoses, 18.7% false positive and 2.6% false negative diagnoses. The sensitivity of the method was 95.4, but the specificity was only 56.5. The results indicate that radiopacity of a composite resin is of a certain, although limited, value in detecting secondary and recurrent carious lesions. Regarding the high number of false positive diagnoses the radiographic findings should as far as possible be verified by a clinical examination. A majority of the false positive diagnoses could be explained by an inhomogeneous structure of the fillings.
本研究的目的是阐明复合修复材料的不透射线性对于通过X线片识别充填体缺陷的可能意义。在14颗拔除的人犬齿的28个近中面制备了不同大小和形状的III类洞。所有洞均用Adaptic Radiopaque充填。在16个洞中，在充填前插入少量透光蜡以模拟继发龋或复发性龋损。每颗牙齿在标准化条件下使用15种不同角度进行X线摄影。由三名观察者在不知道缺陷分布的情况下解读这210张X线片。他们做出了78.7%的正确诊断、18.7%的假阳性诊断和2.6%的假阴性诊断。该方法的敏感性为95.4，但特异性仅为56.5。结果表明，复合树脂的不透射线性在检测继发龋和复发性龋损方面具有一定的价值，尽管有限。鉴于假阳性诊断数量较多，X线片检查结果应尽可能通过临床检查进行验证。大多数假阳性诊断可归因于充填体结构不均匀。
