From: Effects of motion direction and power of Er,Cr:YSGG laser on pull-out bond strength of fiber post to root dentin in endodontically-treated single-canal premolar teeth
groups
control
L 0.5
C 0.5
L 1
C 1
L 1.5
C 1.5
power
–
0.5 W
1.0 W
1.5 W
direction
longitudinal
circumferential