Comparative evaluation of Icon® resin infiltration and Clinpro™ XT varnish on colour and fluorescence changes of white spot lesions: a randomized controlled trial

Progress in Orthodontics

Table 4 Intergroup and intragroup comparison of fluorescence loss (Q) values at various time intervals

	Q values of Icon® resin infiltration	Q values of Clinpro™ XT varnish	Intergroup comparison	Intragroup comparison
	Q values of Icon® resin infiltration	Q values of Clinpro™ XT varnish	Intergroup comparison	Icon® resin infiltration	Clinpro™ XT varnish
T₀	4.48 ± 1.42	4.60 ± 1.29	p = 0.498	T₀ vs T₁, p = 0.000**	T₀ vs T₁, p = 0.000**
T₁	2.84 ± 1.53	3.14 ± 1.20	p = 0.094	T₁ vs T₂, p = 0.000**	T₁ vs T₂, p = 0.000**
T₂	2.06 ± 1.05	2.05 ± 0.83	p = 0.935	T₂ vs T₃, p = 0.000**	T₂ vs T₃, p = 0.000**
T₃	1.48 ± 0.81	1.51 ± 0.72	p = 0.767	T₀ vs T₃, p = 0.000**	T₀ vs T₃, p = 0.000**
Adjacent Sound Enamel	1.06 ± 0.58	1.08 ± 0.51	p = 0.80	T₃ adjacent sound enamel, p = 0.050	T₃ adjacent sound enamel, p = 0.016*

Statistical tests: intergroup comparison—independent Student’s t test; intragroup comparison—one-way repeated measures ANOVA
Q fluorescence loss, T₀ before intervention, T₁ immediate after intervention, T₂ 3 months, T₃ 6 months
*p < 0.05, **p < 0.01