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. 2021 Mar 3;21(5):1741. doi: 10.3390/s21051741

Figure 6.

Figure 6

Proximal dental caries: (a–d) QLF caries score 0 (no fluorescence loss and no red fluorescence increase in occlusal surface (distal side)) and radiographic caries score 1 (radiolucency visible in the enamel) on #14 and QLF caries score 0 (no fluorescence loss and no red fluorescence increase in occlusal surface (mesial side)) and radiographic caries score 2 (radiolucency in the dentine but restricted to the outer 1/3 of the dentine) on #15; (e–h) QLF caries score 1 (fluorescence loss and red fluorescence present in occlusal surface (distal side)) and radiographic caries score 2 (radiolucency in the dentine but restricted to the outer 1/3 of the dentine) on #14 and QLF caries score 0 (no fluorescence loss and no red fluorescence increase in occlusal surface (distal side)) and radiographic caries score 2 (radiolucency in the dentine but restricted to the outer 1/3 of the dentine) on #15; (a,e): white-light image of QLF; (b,f): fluorescence image of QLF; (c,g): bitewing radiograph; (d,h): analyzed QLF image using QA2 software.