Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ankara University, Konya Yolu, Cankaya, Turkey.
Dentomaxillofac Radiol. 2012 Sep;41(6):450-9. doi: 10.1259/dmfr/30526171.
To compare proximal caries detection using intraoral bitewing, extraoral bitewing and panoramic radiography.
80 extracted human premolar and molar teeth with and without proximal caries were used. Intraoral radiographs were taken with Kodak Insight film (Eastman Kodak Co., Rochester, NY) using the bitewing technique. Extraoral bitewing and panoramic images were obtained using a Planmeca Promax Digital Panoramic X-ray unit (Planmeca Inc., Helsinki, Finland). Images were evaluated by three observers twice. In total, 160 proximal surfaces were assessed. Intra- and interobserver kappa coefficients were calculated. Scores obtained from the three techniques were compared with the histological gold standard using receiver operating characteristic analysis. Az values for each image type, observer and reading were compared using z-tests, with a significance level of α = 0.05.
Kappa coefficients ranged from 0.883 to 0.963 for the intraoral bitewing, from 0.715 to 0.893 for the extraoral bitewing, and from 0.659 to 0.884 for the panoramic radiography. Interobserver agreements for the first and second readings for the intraoral bitewing images were between 0.717 and 0.780, the extraoral bitewing readings were between 0.569 and 0.707, and the panoramic images were between 0.477 and 0.740. The Az values for both readings of all three observers were highest for the intraoral bitewing. Az values for the extraoral bitewing images were higher than those of the panoramic images without statistical significance (p > 0.05).
Intraoral bitewing radiography was superior to extraoral bitewing and panoramic radiography in diagnosing proximal caries of premolar and molar teeth ex vivo. Similar intra- and interobserver coefficients were calculated for extraoral bitewing and panoramic radiography.
比较口内牙合翼片、口外牙合翼片和全景片在检测近中面龋损方面的效果。
使用 80 颗带有和不带有近中面龋损的人离体前磨牙和磨牙。使用柯达 Insight 胶片（Eastman Kodak Co.，Rochester，NY）进行口内牙合翼片拍摄，采用牙合翼技术。使用 Planmeca Promax 数字全景 X 射线机（Planmeca Inc.，Helsinki，Finland）获得口外牙合翼片和全景片。由三位观察者对总共 160 个近中面进行两次评估。计算了观察者内和观察者间的kappa 系数。使用受试者工作特征分析，将三种技术获得的评分与组织学金标准进行比较。使用 z 检验比较每种图像类型、观察者和阅读的 Az 值，显著性水平为 α = 0.05。
口内牙合翼片的 kappa 系数范围为 0.883 至 0.963，口外牙合翼片的 kappa 系数范围为 0.715 至 0.893，全景片的 kappa 系数范围为 0.659 至 0.884。口内牙合翼片第一次和第二次阅读的观察者间一致性在 0.717 至 0.780 之间，口外牙合翼片的阅读一致性在 0.569 至 0.707 之间，全景片的阅读一致性在 0.477 至 0.740 之间。所有三位观察者的两次阅读的 Az 值均以口内牙合翼片最高。口外牙合翼片的 Az 值高于全景片，但无统计学意义（p > 0.05）。
在检测离体前磨牙和磨牙的近中面龋损方面，口内牙合翼片优于口外牙合翼片和全景片。口外牙合翼片和全景片的观察者内和观察者间系数相似。
