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. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: J Prosthodont. 2015 Nov 30;26(5):410–418. doi: 10.1111/jopr.12396

Table 2.

Roughness (Ra in μm) [mean ± SD] for each polishing system, step, and speed

Bur roughen (15 s) Medium polish (30 s) Medium polish (60 s) Fine polish (30 s)
Dialite ZR 5000 RPM 4.0 ± 0.4 2.4 ± 0.3 2.3 ± 0.3 2.0 ± 0.2
Dialite ZR 15,000 RPM 4.1 ± 0.3 2.3 ± 0.4 1.5 ± 0.4 0.6 ± 0.2
Dialite ZR 40,000 RPM 3.8 ± 0.2 1.8 ± 0.5 1.4 ± 0.2 1.3 ± 0.3
CeraMaster 5000 RPM 4.0 ± 0.4 2.7 ± 0.1 2.8 ± 0.2 2.3 ± 0.2
CeraMaster 15,000 RPM 3.8 ± 0.2 3.0 ± 0.8 2.4 ± 0.2 1.0 ± 0.3
CeraMaster 40, 000 RPM 4.0 ± 0.4 2.5 ± 0.1 2.1 ± 0.1 1.6 ± 0.1