Zhang Wen, McGrath Colman, Lo Edward C M
Oral Health Prev Dent. 2016;14(6):555-561. doi: 10.3290/j.ohpd.a37140.
The purpose of this clinical research was to analyze the effectiveness of DIAGNOdent in detecting root caries without dental scaling.
The status of 750 exposed, unfilled root surfaces was assessed by visual-tactile examination and DIAGNOdent before and after root scaling. The sensitivity and specificity of different cut-off DIAGNOdent values in diagnosing root caries with reference to visual-tactile criteria were evaluated on those root surfaces without visible plaque/calculus. The DIAGNOdent values from sound and carious root surfaces were compared using the nonparametric Mann-Whitney U-test. The level of statistical significance was set at 0.05.
On root surfaces without plaque/calculus, significantly different (p < 0.05) DIAGNOdent readings were obtained from sound root surfaces (12.2 ± 11.1), active carious root surfaces (37.6 ± 31.7) and inactive carious root surfaces (20.9 ± 10.5) before scaling. On root surfaces with visible plaque, DIAGNOdent readings obtained from active carious root surfaces (29.6 ± 20.8) and inactive carious root surfaces (27.0 ± 7.2) were not statistically significantly different (p > 0.05). Furthermore, on root surfaces with visible calculus, all DIAGNOdent readings obtained from sound root surfaces were > 50, which might be misinterpreted as carious. After scaling, the DIAGNOdent readings obtained from sound root surfaces (8.1 ± 11.3), active carious root surfaces (37.9 ± 31.9) and inactive carious root surfaces (24.9 ± 11.5) presented significant differences (p < 0.05). A cut-off value between 10 and 15 yielded the highest combined sensitivity and specificity in detecting root caries on root surfaces without visible plaque/calculus before scaling, but the combined sensitivity and specificity are both around 70%.
These findings suggest that on exposed, unfilled root surfaces without visible plaque/calculus, DIAGNOdent can be used as an adjunct to the visual-tactile criteria in detecting root-surface status without pre-treatment by dental scaling.
本临床研究的目的是分析DIAGNOdent在不进行牙齿洁治的情况下检测根龋的有效性。
在根面洁治前后，通过视诊-触诊检查和DIAGNOdent对750个暴露的、未充填的根面状况进行评估。参照视诊-触诊标准，对那些无可见菌斑/牙石的根面评估不同DIAGNOdent截断值诊断根龋的敏感性和特异性。使用非参数曼-惠特尼U检验比较健康根面和龋坏根面的DIAGNOdent值。统计学显著性水平设定为0.05。
在无菌斑/牙石的根面上，洁治前健康根面（12.2±11.1）、活动龋根面（37.6±31.7）和静止龋根面（20.9±10.5）的DIAGNOdent读数有显著差异（p<0.05）。在有可见菌斑的根面上，活动龋根面（29.6±20.8）和静止龋根面（27.0±7.2）的DIAGNOdent读数无统计学显著差异（p>0.05）。此外，在有可见牙石的根面上，所有健康根面的DIAGNOdent读数均>50，这可能会被误诊为龋坏。洁治后，健康根面（8.1±11.3）、活动龋根面（37.9±31.9）和静止龋根面（24.9±11.5）的DIAGNOdent读数有显著差异（p<0.05）。在洁治前无可见菌斑/牙石的根面上检测根龋时，截断值在10至15之间产生的综合敏感性和特异性最高，但综合敏感性和特异性均约为70%。
这些研究结果表明，在暴露的、未充填的无可见菌斑/牙石根面上，DIAGNOdent可作为视诊-触诊标准的辅助手段，用于在不进行牙齿洁治预处理的情况下检测根面状况。
