Shearforce [MPa], STDEV
ARI (mean)
Significance p≤0.05
Etching
16.5 +/- 9.9
2.67
CO
2
, Er:YAG
CO
2
laser
3.3+/- 2.1
2.3
etching
Er:YAGlaser
6.2 +/- 2
1.69
etching
Table 1:
Bond strength, mean ARI (adhesive remnant index) score and significance. Conventional etching showed superior bond strength to lasing.
