id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
bjos-8648755	Farinon, Camila Bruscato; Pasqualotto, Giovanna Signori; Carraro, Kauani; Rodrigues Junior, Sinval Adalberto	Tooth whitening recovers the color of pre-stained composites	2017	4	.pdf	application/pdf	3509	212	56	Bagheri et al.19 (2005) noticed that color changes higher than 3.3 are often associated to darkening and yellowing, the L* component being the most significant for color change. This was clearly observed in specimens of Group C. However, the lack of significant color change in the specimens from groups A and B reinforces the hypothesis that whitening of composites occurs by removal of extrinsic stain, not to intrinsic color change9,22.	cache/bjos-8648755.pdf	txt/bjos-8648755.txt