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Progress in Orthodontics

Table 1 Comparison of the mean ΔE after WSL formation (T1-T0) between each main group and the threshold of clinical detection

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

Different depths of WSLs

Mean ΔE

SD

Critical value ΔE

t

P value

Shallow enamel (n = 24)

3.837

0.814

3.7

0.56

0.589

Deep enamel (n = 24)

4.807

1.586

2.31

0.043*

Shallow dentine (n = 24)

5.109

1.683

2.78

0.020*

Deep dentine (n = 24)

6.919

0.86

12.41

0.000**

  1. *Significant at a P value < 0.05; **significant at a P value < 0.001; (n) sample size
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