Effect of Laser and Conventional Office Bleaching and Polishing on the Color Change of Stained Nanohybrid and Microhybrid Composite Resin

Table 6

Mean color change after stain-removal procedures compared with baseline (ΔE₃).

Composite resin	Method	Mean ± SD	Maximum	Minimum
Clearfil	Polishing	4.93 ± 0.61	5.63	4.22
	Office bleaching	3.31 ± 1.42	5.34	2.02
	Laser bleaching	3.35 ± 1.25	4.14	1.44
Grandio	Polishing	4.57 ± 2.14	8.6	1.71
	Office bleaching	3.31 ± 2.41	7.03	3.03
	Laser bleaching	6.35 ± 1.81	8.5	3.14