Comparative evaluation of enamel surface roughness after debonding using four finishing and polishing systems for residual resin removal—an in vitro study

Progress in Orthodontics

Table 9 Chi-square test for enamel roughness evaluation (SEM)

Group * score cross tabulation
			Score			Total
			.00	1.00	3.00	Total
Group	Group 1	Count	0	0	2	2
	Group 1	% within score	0.0%	0.0%	50.0%	25.0%
	Group 2	Count	2	0	0	2
	Group 2	% within score	100.0%	0.0%	0.0%	25.0%
	Group 3	Count	0	2	0	2
	Group 3	% within score	0.0%	100.0%	0.0%	25.0%
	Group 4	Count	0	0	2	2
	Group 4	% within score	0.0%	0.0%	50.0%	25.0%
Total		Count	2	2	4	8
Total		% within score	100.0%	100.0%	100.0%	100.0%