Surface-specific electrical occlusal caries diagnosis: reproducibility, correlation with histological lesion depth, and tooth type dependence

摘要: Electrical conductance measurements are being used experimentally for occlusal caries detection. Recently, it was suggested to cover the fissure system with a conducting medium, resulting in surface–specific measurement. It aim of this study determine vitro reproducibility modified technique posterior teeth, large sample correlation between electrical and histological lesion depth, evaluate difference results premolars molars. For determination, resistance were made using 68 teeth. Eight operators performed on all repeated 24 The validity included previous collected samples from two more studies, total 325 One operator had teeth sample. Reproducibility good: mean Pearson's coefficient 0.89 (±0.05) interexaminer correlation, 0.86 (±0.12) intra–examiner log (resistance) as result parameter. log(resistance) depth –0.78 –0.64 premolars, –0.73 regression line molars located below premolars: at hypothetical histology score 2.5 (a dentine threshold) estimated threshold would be 507 kΩ 233 Converted Electronic Caries Monitor (ECM) readings, is about 1.4 ECM scale. concluded that described method measurement very good, even inexperienced operators. moderate good. sensitive electrode area differences, which will different clinical cut–offs diagnosis premolar molar