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Table 3 Automated evaluation results of the Quantitative Light Fluorescent (QLF) images for fluorosis compared to clinical exam indices tooth scores for the upper left central incisor

From: Quantitative Light Fluorescence (QLF) and Polarized White Light (PWL) assessments of dental fluorosis in an epidemiological setting

QLF METRIC (mean) TF SCORE (Clinical from Examiner 1) Spearman’s rho Kendall’s tau b
0 1 2 3 4 5 6 7 P < 0.001
% Area 16.89 21.17 27.90 32.88 45.42 45.30 49.70 42.68 .735 .593
Δ F 0.0482 0.0540 0.0622 0.0747 0.1067 0.1049 0.0891 0.1205 .730 .586
Δ Q 0.0094 0.0122 0.0183 0.0258 0.0526 0.0553 0.0460 0.0514 .742 .600
DEANS SCORE (Clinical from Examiner 3)
  Normal Questionable Very Mild Mild Moderate Severe  
% Area 14.90 22.36 22.05 32.07 31.03 45.75 .793 .652
Δ F 0.0444 0.0566 0.0548 0.0669 0.0670 0.1076 .777 .635
Δ Q 0.0069 0.0139 0.0126 0.0224 0.0210 0.0537 .798 .659