Influence of Prolonged Dental Bleaching on the Adhesive Bond Strength to Enamel Surfaces

Table 3

Prerestoration bleaching results of the adhesive bond strength (MPa) to enamel surfaces.

	Experimental groups
	G1	G5	G6	G7	G8	G9	G10
Mean (Standard deviation)	20.876	13.648^A,a	8.564^B,b	14.816^C,a	16.445^C;b,c	13.850^D,a	13.932^D,c
	(±5.14)	(±4.13)	(±6.87)	(±4.54)	(±5.76)	(±5.22)	(±5.66)

Distinct capital letters indicate statistical difference between the same period of dental bleaching; distinct lowercase letters indicate statistical difference between the same period of storage in AS. Statistical difference compared with the unbleached group (G1).