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

Table 2

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

	Experimental groups
	G1	G2	G3	G4
Mean	20.876^A	13.599^B	14.029^B	16.549^B
(Standard deviation)	(±5.14)	(±3.91)	(±5.36)	(±5.88)