Er:YAG Laser for Brackets Bonding: A SEM Study after Debonding

Table 2

Results of Kruskal-Wallis multiple comparison test, treatment groups versus control (two-tailed).

Comparisons	Observed diff.	value
		10%		5%		1%
		Critical diff.	Difference	Critical diff.	Difference	Critical diff.	Difference
Control group—Group 2	23,636	15,312	TRUE	17,063	TRUE	20,653	TRUE
Control group—Group 3	14,909	15,312	FALLS	17,063	FALLS	20,653	FALLS
Control group—Group 4	17,273	15,312	TRUE	17,063	TRUE	20,653	FALLS
Control group—Group 5	12,364	15,312	FALLS	17,063	FALLS	20,653	FALLS