Nair M K, Tyndall D A, Ludlow J B, May K
Department of Diagnostic Sciences, UNC-CH School of Dentistry, Chapel Hill, N.C. 27599-7450, USA.
Caries Res. 1998;32(1):23-30. doi: 10.1159/000016426.
This study compared the diagnostic efficacy of four imaging modalities for the detection of artificially induced recurrent caries: intraoral film, direct digital bitewing images, tuned apertuce computed tomography (TACT) slices and iteratively restored TACT images using an in vitro model. Twenty-four posterior teeth were prepared for MOD inlay restorations. These were then restored with different restorative materials (amalgam, Herculite and Durafill). Lesions were simulated in half the number of surfaces studied. These lesions were created either at the intersection of the facial or lingual walls and the gingival floor or on the gingival floor midway between the facial and lingual walls in the proximal boxes of the MOD restorations. Analysis of observations from 8 observers using ROC curve reveal the superior diagnostic efficacy with TACT iteratively restored images (Az for TACT iteratively restored images = 0.9171, TACT slices = 0.7052, Film = 0.6608, direct digital images = 0.5979). ANOVA revealed significance with respect to the imaging modality used (p < 0.0001). The results suggest that TACT images hold promise as a more effective imaging modality than film or direct digital systems for detection of recurrent caries.
口腔内胶片、直接数字化咬合翼片图像、调谐孔径计算机断层扫描（TACT）切片以及使用迭代恢复的TACT图像。制备了24颗后牙用于MOD嵌体修复。然后用不同的修复材料（汞合金、Herculite和Durafill）进行修复。在所研究表面的一半上模拟病变。这些病变在MOD修复体近中盒的颊壁或舌壁与龈底的交界处，或在颊壁和舌壁之间龈底的中点处形成。使用ROC曲线对8名观察者的观察结果进行分析，发现迭代恢复的TACT图像具有更高的诊断效能（迭代恢复的TACT图像的Az = 0.9171，TACT切片 = 0.7052，胶片 = 0.6608，直接数字化图像 = 0.5979）。方差分析显示所使用的成像方式具有显著性（p < 0.0001）。结果表明，对于复发性龋齿的检测，TACT图像有望成为比胶片或直接数字化系统更有效的成像方式。
