Background: Reliable caries detection is a cornerstone in the modern caries treatment schema. This study aimed\r\nto evaluate adopting traditional and new caries detection methods by third-year dental students.\r\nMethods: Fifty-seven students were given lectures on caries detection, after which they evaluated 27 extracted\r\ncarious teeth using traditional clinical assessment (CE), Nyvadâ��s, and ICDAS methods. On three teeth they also\r\nperformed DIAGNOdent pen�® (LF) scanning. Histological scores of the sectioned teeth (ICDAS, LF) and activity\r\nestimations of the lesions by the supervisors were used as golden standards (Nyvad, CE). For the ICDAS method ,\r\nsensitivity and specificity were calculated using dentine caries (D3) as a cut-off point. Mean ICC and kappa values\r\nwere calculated to evaluate interexaminer agreement for all lesions and methods. Spearmanâ��s correlation coefficient\r\nevaluated LF scanning.\r\nResults: ICDAS method presented good sensitivity (0.78) and specificity (0.87). The inter-examiner agreement for\r\ndifferent methods was fair or good (CE ICC = 0.69, ? = 0.53; Nyvadâ��s method ICC = 0.68, ? = 0.48, ICDAS ICC = 0.66,\r\n? = 0.47). Variation in LF values was the greatest with lesions extending to middle third of dentin. In that case, the\r\nSpearmanâ��s correlation coefficient was also the weakest.\r\nConclusions: To follow the guidelines by the European Core Curriculum on Cariology, the third year dental\r\nstudents are introduced to methods for detecting lesion depth and assessing lesion activity as well as using new\r\ncaries detection methods. Their performance in estimating lesion depth is good, and fair to good in estimating\r\nlesion activity even after basic training only
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