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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