Evaluation of Static Friction of Polycrystalline Ceramic Brackets after Conditioning with Different Powers of Er:YAG Laser

Table 3

Power of Er:YAG laser beams used (mj/s)	Means of frictional forces between the wire at 0° of angulation and the bracket (N)	Means of frictional forces between the wire at 10° of angulation and the bracket (N)	value
0	2.59 ± 0.74	3.97 ± 0.75	0.020
100	1.66 ± 0.31	2.97 ± 1.02	0.026
200	1.05 ± 0.56	2.9 ± 1.66	0.041
300	0.59 ± 0.25	3.8 ± 1.18	0.000