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Year : 2016  |  Volume : 27  |  Issue : 2  |  Page : 174-177
Comparison of three diagnostic techniques for detecting occlusal dental caries in primary molars: An in vivo study

Department of Pedodontics and Preventive Dentistry, Terna Dental College, Navi Mumbai, Maharashtra, India

Correspondence Address:
Farhin Katge
Department of Pedodontics and Preventive Dentistry, Terna Dental College, Navi Mumbai, Maharashtra
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0970-9290.183133

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Aim: To compare the accuracy and repeatability of three diagnostic systems; visual inspection, bitewing radiography, and CarieScan PRO for occlusal caries diagnosis in primary molars. Materials and Methods: 216 occlusal surfaces of primary molars examined in turn by two examiners using each of three diagnostic systems (visual inspection, bitewing radiography, and CarieScan PRO). Examiners indicated operative intervention (validation method) for 104 teeth which were used for statistical analysis. The validation method was cavity preparation when the two examiners agreed about the presence of dentinal caries. Sensitivity, specificity, likelihood ratio, positive predictive value (PPV), and negative predictive value (NPV) were calculated for each diagnostic technique. Inter- and intra-examiner repeatability was calculated for each diagnostic system using the Cohen's kappa statistics. Results: Visual inspection showed the highest sensitivity (0.93). The highest sensitivity and NPVs were provided by CarieScan PRO (0.97 and 0.95, respectively) however this was offset by a lower specificity (0.82) compared to other techniques. The CarieScan PRO gave the highest values of Cohen's kappa statistics. Conclusion: This study showed low sensitivity but substantial specificity with visual inspection. Bitewing radiography performed poorly overall when compared with the other two systems. The CarieScan PRO technique gave the highest overall combination of sensitivity and specificity for detection of occlusal caries.

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