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Table 2 Lesion depth values (µm) of all studied groups and percent difference between each test and its control subgroup

From: Preventive potential of nano silver fluoride versus sodium fluoride varnish on enamel caries like lesions in primary teeth: in vitro study

  NSF (subgroup Ia)
(n = 24)
FV (subgroup IIa)
(n = 24)
Ia (test)
n = 12)
Ib (control)
(n = 12)
IIa (test)
n = 12
IIb (control)
(n = 12)
Mean ± SD 244.03 ± 79.73 384.30 ± 110.91 262.73 ± 99.65 416.96 ± 107.42
Paired t (P value) − 8.56 (< 0.001*) − 6.65 (< 0.001*)
Independent t test (P value) − 0.507 (0.61)
Percent Reduction     
 Mean ± SD 36.36 ± 9.54 37.30 ± 16.67
 Independent t test (P value) 0.169
(0.86)
  1. NSF Nano silver fluoride, FV Fluoride varnish
  2. *Statistically significant at P value ≤ 0.05