Table 3.

Number of complaints after 7 and 15 days of treatment (the same subject may have had more than one complaint).

Groups	White Class 7.5		White Class 6		3D White		Control
Parameters	7 days	15 days	7 days	15 days	7 days	15 days	7 days	15 days
Dental sensitivity	2	1	1	1	7	0	0	0
Gingival sensitivity	2	2	1	4	6	2	0	0
Itching	0	0	0	0	0	0	0	0
Mouth ulcers	0	0	0	0	3	1	0	0
Burning on lips	2	2	0	1	1	0	0	0
Burning on gums	0	0	0		1	0	0	0
Number of complaining subjects	4 (40%)	2 (20%)	1 (10%)	4 (40%)	10 (100%)	2 (20%)	0 (0%)	0 (0%)