Whitening Efficacy of 3% Carbamide Peroxide Gel Activated by Lactoperoxidase

Table 1

Characteristics of the treatment group (n = 19) and the control group (n = 19).

		Treatment	Control
Data in mean ± standard deviation
Age		26.2 ± 4.2	26.2 ± 4.2	—
Data in number (percentage)
Gender	Male	6 (32)	6 (32)	—
	Female	13 (68)	13 (68)
Socioeconomic level	Low	0 (0)	0 (0)	—
	High	19 (100)	19 (100)
Tooth brushing	<2	6 (32)	2 (11)	0.23
	≥2	13 (68)	17 (89)
Tobacco use	Yes	3 (16)	0 (0)	0.23
	No	16 (84)	19 (100)
Coloring drinks	Yes	14 (74)	18 (95)	0.18
	No	5 (26)	1 (5)
Bleaching treatment	Yes	3 (16)	1 (5)	0.60
	No	16 (84)	18 (95)