Table 1. Multiple comparisons of groups by post-hoc Tukey tests for shear bond strength. The mean difference is significant at the 0.05 level.

(I) group	(J) group	Mean difference (I-J)	Std. error	Sig.	95% Confidence Interval
					Lower bound	Upper bound
control	CPP	-3.00533	2.32396	.696	-9.5128	3.5021
	Laser	-11.09867*	2.32396	.000	-17.6061	-4.5912
	Laser + CPP	.48000	2.32396	1.000	-6.0274	6.9874
	CPP+ Laser	-.43467	2.32396	1.000	-6.9421	6.0728
CPP	Laser	-8.09333*	2.32396	.007	-14.6008	-1.5859
	Laser + CPP	3.48533	2.32396	.566	-3.0221	9.9928
	CPP + Laser	2.57067	2.32396	.803	-3.9368	9.0781
Laser	Laser + CPP	11.57867*	2.32396	.000	5.0712	18.0861
	CPP + laser	10.66400*	2.32396	.000	4.1566	17.1714
Laser + CPP	CPP + laser	-.91467	2.32396	.995	-7.4221	5.5928