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. 2003 Feb 7;3:1. doi: 10.1186/1472-6831-3-1

Table 1.

Ra mean values (Mean) and standard deviations (SD) for the different coping materials expressed in microns.

Material Treatment Mean ± SD
Denzir Sandblasted 2.01 ± 0.65
Denzir Untreated 2.13 ± 0.52
Procera Untreated 2.47 ± 0.76