Table 4.

Nyvad’s scores [12] at the baseline and after 1 month of treatment (final) for TiF₄, NaF and placebo treatments.

Measures	TiF4			NaF			Placebo
	Baseline	Final	Baseline		Final	Baseline		Final
Nyvad index, mean±SD	1.0±0.00	1.0±0.00	0.97±0.15		1.03±0.15a	0.99±0.06		1.08±0.24b
Dfc, median (min-max)	0.0 (0.0 to 0.0)			0.0 (–0.7 to 0.0)			0.0 (–1.0 to 0.0)

^aOne patient presented two teeth that progressed from score 0 to 1 and 1 patient had one lesion that progressed from score 1 to 3.

^bOne patient presented one tooth that progressed from score 0 to 3 and one patient had one lesion that progressed from score 1 to 3.

^cDf: degrees of freedom. Df = baseline – final value, where positive values indicate regression and negative values indicate lesions progression. Kruskal-Wallis Test (p=.39).