Table 2.

Description of visual scores among subjects of three groups at various time intervals of observation

Groups	Time intervals	Visual scores mean ± SD	Significance (P value)	Comparison between various time intervals of observation (intra-group)
				Comparison	P value
Group I	T 0	15.71 ± 7.94	0.078 NS	T 0–T 1	1.000 NS
	T 1	12.14 ± 8.41		T 0–T 2	0.582 NS
	T 2	10.57 ± 8.18		T 0–T 3	0.067 NS
	T 3	07.71 ± 7.66		T 1–T 2	1.000 NS
				T 1–T 3	0.910 NS
				T 2–T 3	1.000 NS
Group II	T 0	12.31 ± 6.45	0.012*	T 0–T 1	0.676 NS
	T 1	08.85 ± 6.22		T 0–T 2	0.169 NS
	T 2	07.46 ± 5.47		T 0–T 3	0.008**
	T 3	05.00 ± 3.03		T 1–T 2	1.000 NS
				T 1–T 3	0.473 NS
				T 2–T 3	1.000 NS
Group III	T 0	15.50 ± 12.45	0.008**	T 0–T 1	1.000 NS
	T 1	12.28 ± 6.83		T 0–T 2	0.035*
	T 2	06.85 ± 4.91		T 0–T 3	0.018*
	T 3	06.14 ± 5.24		T 1–T 2	0.462 NS
				T 1–T 3	0.277 NS
				T 2–T 3	1.000 NS

T ₀ prior to application of remineralizing agents, T ₁ 1 month after the use of remineralizing agents, T ₂ 3 months after the use of remineralizing agents, T ₃ 6 months after the use of remineralizing agents, NS non-significant

*P < 0.05; **P < 0.01