Table 1.

Enamel roughness (Ra, μm) values for each group.

	A1	A2	B1	B2	C1	C2	D	E
Q1	0.934	0.623	0.434	0.543	0.423	0.261	0.824	0.323
Median	1.516	1.281	1.374	1.135	0.876	0.440	1.797	0.489
Q3	2.100	1.835	1.500	1.524	1.2	0.518	2.500	0.647
Max	2.619	2.135	2.293	1.991	1.652	0.818	3.048	0.898
IQR	1.166	1.211	1.066	0.981	0.777	0.256	1.676	0.324
Min	0.153	0.327	0.255	0.180	0.240	0.061	0.247	0.080