Comparison between Visual and QLF Examinations of Incipient Caries in Deciduous Dentition

DOI Takashi, MIYAKE Tatsuro, UENE Masako, JIN Koichiro, KAWASAKI Koji, NISHIDA Yuhei, OHASHI Akiko, KAMBARA Masaki

doi:10.5834/jdh.61.2_233

The purpose of this clinical study was to investigate the correlation between visual examination as a subjective method and examination using a quantitative light-induced fluorescence (QLF) image as an objective method for evaluating the oral health condition of the deciduous dentition. The subjects of this study were 119 nursery school children (4 or 5 years of age) in Osaka, Japan. The occlusal and buccal surfaces of the 2nd deciduous molar and buccal surface of the deciduous incisor were examined visually and tactilely with a dental mirror and CPI probe. The tooth surfaces were classified into: sound, filled (including a sealant), decayed caries, or early caries lesion. Examination using a QLF image was performed for the same tooth surfaces with the same criteria as for visual examination. Thirty-five tooth surfaces with early caries lesions were detected by visual inspection, whereas 332 surfaces were detected by QLF. There was nearly a 10-fold difference between visual and QLF examinations in the detection of early caries lesions. Moreover, 134 filled surfaces were observed by QLF examination. On visual inspection of these 134 surfaces, 63 surfaces were identified as filled surfaces, and 61 as sound surfaces. These results suggest the importance of introducing a new examination system which consists of subjective and objective methods into dental management in the future.

Comparison between Visual and QLF Examinations of Incipient Caries in Deciduous Dentition

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