Table 4: Mean and Standard deviation of the different roughness values of samples initially recorded.

	Ra	Rq	Rz	Rt
Group I	1.94 ± 0.17	2.13 ± 0.19	9.80 ± 0.16	23.3 ± 1.47
Group II	1.83 ± 0.14	2.01 ± 0.16	8.88 ± 0.33	24.61 ± 0.78
Group III	1.85 ± 0.05	2.04 ± 0.06	9.17 ± 0.49	23.96 ± 1.17
Group IV	2.02 ± 0.08	2.22 ± 0.09	9.24 ± 0.18	24.45 ± 0.95
Group V	1.93 ± 0.11	2.12 ± 0.12	9.18 ± 0.12	25.52 ± 0.59