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Journal of Biomedical Optics • Open Access

Light-emitting diode and laser fluorescence-based devices in detecting occlusal caries
Author(s): Jonas Rodrigues; Isabel Hug; Klaus W. Neuhaus; Adrian Lussi

Paper Abstract

The aim of this study was to assess the performance of two light-emitting diode (LED)- and two laser fluorescence-based devices in detecting occlusal caries in vitro. Ninety-seven permanent molars were assessed twice by two examiners using two LED- (Midwest Caries - MID and VistaProof - VP) and two laser fluorescence-based (DIAGNOdent 2095 - LF and DIAGNOdent pen 2190 - LFpen) devices. After measuring, the teeth were histologically prepared and classified according to lesion extension. At D1 the specificities were 0.76 (LF and LFpen), 0.94 (MID), and 0.70 (VP); the sensitivities were 0.70 (LF), 0.62 (LFpen), 0.31 (MID), and 0.75 (VP). At D3 threshold the specificities were 0.88 (LF), 0.87 (LFpen), 0.90 (MID), and 0.70 (VP); the sensitivities were 0.63 (LF and LFpen), 0.70 (MID), and 0.96 (VP). Spearman's rank correlations with histology were 0.56 (LF), 0.51 (LFpen), 0.55 (MID), and 0.58 (VP). Inter- and intraexaminer ICC values were high and varied from 0.83 to 0.90. Both LF devices seemed to be useful auxiliary tools to the conventional methods, presenting good reproducibility and better accuracy at D3 threshold. MID was not able to differentiate sound surfaces from enamel caries and VP still needs improvement on the cut-off limits for its use.

Paper Details

Date Published: 1 October 2011
PDF: 6 pages
J. Biomed. Opt. 16(10) 107003 doi: 10.1117/1.3631796
Published in: Journal of Biomedical Optics Volume 16, Issue 10
Show Author Affiliations
Jonas Rodrigues, Federal Univ. of Rio Grande do Sul (Brazil)
Isabel Hug, Univ. Bern (Switzerland)
Klaus W. Neuhaus, Univ. Bern (Switzerland)
Adrian Lussi, Univ. Bern (Switzerland)


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