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Table 3 Comparison between the mean ΔE (T2-T0) following various resin infiltration protocols of the WSLs in dentine and the threshold of clinical detection

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

Shallow dentine (n = 24) Mean ΔE SD Critical value ΔE t P value
Resin infiltration protocols EA (n = 6) 3.552 0.317 3.7 − 1.55 0.153
EAA (n = 6) 3.002 0.447 − 5.18 0.000**
EEA (n = 6) 3.826 0.361 1.16 0.274
EEAA (n = 6) 4.190 0.340 4.78 0.001*
Deep dentine (n = 24)     
Resin infiltration protocols EA (n = 6) 4.029 0.537 2.03 0.070
EAA (n = 6) 3.763 0.598 0.35 0.734
EEA (n = 6) 4.732 0.773 4.43 0.001*
EEAA (n = 6) 5.964 0.567 13.24 0.000**
  1. *Significant at a P value < 0.05; **significant at a P value < 0.001; (n) sample size