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Table 1 Means (standard deviation) of zirconia surface roughness (µm)

From: Surface topography and bond strength of CAD–CAM milled zirconia ceramic luted onto human dentin: effect of surface treatments before and after sintering

Treatment Moment of treatment
Before sintering After sintering
C 5.79 ± 0.34 Ba 2.03 ± 0.28 Aa
AO 5.88 ± 0.50 Ba 1.79 ± 0.18 Aa
GB 6.55 ± 0.39 Bb 1.77 ± 0.19 Aa
HA 5.49 ± 0.32 Ba 1.87 ± 0.16 Aa
  1. * Different letters indicate statistical difference (p < 0.05), where capital letters are based on comparison among rows and lowercase letters comparison among columns