In vivo evaluation of laser fluorescence performance using different cut-off limits for occlusal caries detection

Diniz, Michele Baffi; Rodrigues, Jonas Almeida; Rodrigues, Jonas de Almeida; de Paula, Andréia Bolzan; Cordeiro, Rita de Cássia Loiola (2009). In vivo evaluation of laser fluorescence performance using different cut-off limits for occlusal caries detection. Lasers in medical science, 24(3), pp. 295-300. London: Springer 10.1007/s10103-008-0547-1

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The aim of this in vivo study was to evaluate the performance of laser fluorescence (LF) comparing different cut-off limits for occlusal caries detection. One hundred and thirty first permanent molars were selected. Visual examination and LF assessments were performed independently. The extent of caries was assessed after operative intervention. New cut-off limits were established and compared with those proposed by the manufacturer and by Lussi et al. (Eur J Oral Sci 109:14-19, 2001). Similar sensitivity and higher specificity was found at D(2) (considering as disease only dentin caries) when the LF cut-off limits proposed by Lussi et al. and the new one were compared. At the D(3) threshold (considering as disease only deep dentin caries), no statistically significant difference among the cut-off limits for sensitivity was found. However, the new cut-off limits showed higher specificity. The LF device provided good ability to detect dentin caries lesions. Furthermore, the new cut-off limits and the values proposed by Lussi et al. could be suggested for the in vivo detection of occlusal caries.

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