Table 6 Surface roughness change (ΔRa) comparison of the materials according to the polishing systems and immersion solutions.

From: The Effect of Erosive Media on Color Stability, Gloss, and Surface Roughness of Monolithic CAD/CAM Materials Subjected to Different Polishing Methods

 

Polishing method

Immersion solution

    

Group

 

Artificial saliva

Acidic beverage

 

Gastric acid

p

FC

M

0.06±0.05Aa

0.08±0.08Aa

0.1±0.12Aa

0.840¥

0.06(0.07)

0.05(0.12)

0.07(0.11)

G

0.04±0.03Aa

0.06±0.07Aa

0.13±0.11Aa

0.073¥

0.04(0.04)

0.04(0.1)

0.07(0.18)

MG

0.03±0.03Aa

0.11±0.11Aa

0.11±0.07Aa

0.076¥

0.02(0.02)

0.09(0.14)

0.11(0.03)

p

 

0.436¥

0.520¥

0.727¥

 

LDC

M

0.08±0.06Aa

0.07±0.06Aa

0.11±0.13Aa

0.835¥

0.07(0.06)

0.06(0.11)

0.05(0.09)

G

0.08±0.07Aa

0.09±0.1Aa

0.11±0.08Aa

0.854†

0.07(0.08)

0.06(0.08)

0,09(0.06)

MG

0.09±0.06Aa

0.12±0.06Aa

0.07±0.05Aa

0.110†

0.08(0.08)

0.11(0.09)

0.07(0.08)

p

 

0.945†

0.116¥

0.515†

 

RNC

M

0.05±0.03Aa

0.05±0.05Aa

0.06±0.05Aa

0.638¥

0.05(0.02)

0.03(0.05)

0.04(0.09)

G

0.05±0.05Aa

0.07±0.06Aa

0.06±0.05Aa

0.241¥

0.02(0.04)

0.06(0.04)

0.04(0.05)

MG

0.08±0.07Aa

0.14±0.14Aa

0.08±0.08Aa

0.481¥

0.08(0.11)

0.11(0.2)

0.03(0.13)

p

 

0.284†

0.162¥

0.991¥

 
  1. (FC: Feldspathic ceramic, LDC: Lithium disilicate glass ceramics, RNC: resin nano-ceramic, M: mechanical polishing, G: glaze, MG: mechanical polishing + glaze). The data were presented as the mean ± SD and median(IQR). The statistically significant p-value is in bold (p<0,05). † for the ANOVA test and ¥ for the Kruskal-Wallis test. Different lower case letters indicate the difference between solutions of the same material (between rows). Different capital letters indicate the difference between materials in the same solution (between columns).
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