Table 4.

Surface roughness values of Noritake before and after immersion in distilled water (in µm)

Sample no.	Roughness before immersion (µm)	Roughness after immersion (µm)
1	1.39	1.39
2	0.65	0.65
3	0.66	0.66
4	0.85	0.87
5	0.72	0.73
6	0.55	0.55
7	0.77	0.77
8	0.99	1.01
9	0.59	0.59
10	1.21	1.21
11	0.84	0.84
12	0.62	0.62
13	0.89	0.89
14	0.59	0.59
15	0.71	0.72
16	0.91	0.91