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Table 2 Comparison between the mean ΔE (T2-T0) following various resin infiltration protocols of the WSLs in enamel and the threshold of clinical detection

From: Treatment of various degrees of white spot lesions using resin infiltration—in vitro study

Shallow enamel (n = 24) Mean ΔE SD Critical value ΔE t P value
Resin infiltration protocols EA (n = 6) 1.619 0.848 3.7 − 8.14 0.000**
EAA (n = 6) 2.404 0.625 − 6.88 0.000**
EEA (n = 6) 2.472 0.798 − 5.10 0.000**
EEAA (n = 6) 2.993 1.334 − 1.76 0.109
Deep enamel (n = 24)     
Resin infiltration protocols EA (n = 6) 2.418 0.308 − 13.80 0.000**
EAA (n = 6) 1.952 0.397 − 14.60 0.000**
EEA (n = 6) 2.979 0.814 − 2.94 0.015*
EEAA (n = 6) 3.146 0.931 − 1.97 0.077
  1. *Significant at a P value < 0.05; **significant at a P value < 0.001; (n) sample size