id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
bjos-8641673		bjos-8641673		5	.pdf	application/pdf	3692	196	48	Ltda) for 8 h (nocturnal period) at 37oC. For the bleaching procedure (5), 0.1 mL of the whitening gel was mixture with 0.05 mL of artificial saliva and this mixture was applied on enamel surface and covered with an individual tray. Oliveira et al.21 (2005) evaluated the effect of carbamide peroxide containing calcium (0.05% and 0.2%) or fluoride (0.2% and 0.5%) on enamel and showed the reduction of enamel surface microhardness post-bleaching treatment.	cache/bjos-8641673.pdf	txt/bjos-8641673.txt