Quantitative Measurements of the Depth of Enamel Demineralization before and after Bleach: An In Vitro Study

Table 2

Number of healthy teeth before and after bleaching.

	Sound teeth			Demineralized teeth
		%	(μm)		%	(μm)
Distilled water	31	51.7		29	48.3
Saliva	60	100		0
First session	19	31.7		41	68.3
Second session	50	83.3		10	16.7
Third session	51	85.0		9	15.0