Table 2.

Surface roughness scores between and within groups

Group	N	Surface roughness Baseline	Surface roughness 1 month	Surface roughness 3 months	P value
1	5	0.99 ± 0.23	0.81 ± 0.29	0.89 ± 0.34	> 0.05
2	5	1.21 ± 0.51	1.15 ± 0.38	1.15 ± 0.24	> 0.05
3	5	1.38 ± 0.77	1.32 ± 0.51	1.07 ± 0.33	> 0.05
4	5	1.21 ± 0.40*	1.09 ± 0.65	1.02 ± 0.43*	= 0.014
5	5	1.27 ± 0.27	1.13 ± 0.55	1.21 ± 0.60	> 0.05

^*Within groups F = 2.259; P > 0.05 paired t-test, applying the Bonferroni correction