Effects of Er, Cr: YSGG Laser on Shear Bond Strength of the Orthodontic Brackets for 5 and 10 Seconds: An In Vitro Study

Table 3

Descriptive statistics of different laser and acid etching groups (MPa).

Method	N	Mean	SD	Minimum	Maximum
1 W	12	3.30	1.69	1.25	7.38
1.5 W	12	7.44	3.93	4.16	18.20
2 W	12	11.39	6.32	3.77	26.66
2.5 W	12	10.55	5.35	4.21	23.52
Acid etching	12	10.28	5.12	3.29	20.99