Table 2.

Mean Number of Caries Outcome Measures at Baseline, 6 mos, and 1 yr

	ds1-3			ds4-6			ds5-6 mfs
Time	Experimental Group	Control Group	p-value2	Experimental Group	Control Group	p-value	Experimental Group	Control Group	p-value
Baseline	13.49 ± 7.91	15.22 ± 10.07	0.23	10.20 ± 11.01	10.47 ± 12.90	0.84	9.14 ± 10.56	9.38 ± 12.91	0.91
6-month	14.92 ± 7.55	16.00 ± 8.93		11.75 ± 12.71	12.14 ± 14.69		11.97 ± 12.72	12.23 ± 15.40
One-year	17.04 ± 8.11	18.29 ± 9.33		12.68 ± 13.16	13.14 ± 14.98		13.37 ± 13.8	13.50 ± 15.91
p-value1	< 0.001*	< 0.001*		< 0.001*	< 0.001*		< 0.001*	< 0.001*
One-year caries increment	3.55 ± 5.27	3.07 ± 5.86	0.52a	2.48 ± 4.48	2.67 ± 4.42	0.76	4.23 ± 5.14	4.13 ± 5.08	0.88

Data presented as mean ± SD.

ds1-3 = enamel caries lesions (ICDAS score 1, 2, 3).

ds4-6 = dentin caries lesions (ICDAS score 4, 5, 6).

ds5-6mfs = decay, missing, and filled surfaces (dmfs).

p-value¹ = tests of within-subject effects (difference within group): based on repeated-measures analysis of variance.

p-value² = tests of between-subject effects (difference between groups): based on repeated-measured analysis of variance.

a = p-value of the test of differences in 1-year caries increment between groups: based on independent t test.

Overall, mfs (mean) at baseline and 1 yr = 0.11 and 0.74, respectively.