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Table 5 Two-way repeated measure ANOVA of ceramic materials, immersions, and surface roughness types (Account for within individual variations and between individual variations)

From: Surface roughness and color measurements of glazed or polished hybrid, feldspathic, and Zirconia CAD/CAM restorative materials after hot and cold coffee immersion

Parameter

Changes in surface roughness (Ra)

Mean color changes (ΔE*)

Type III Wald Chi-Square

Df

Sig

Type III Wald Chi-Square

Df

Sig

Type of ceramic

0.240

2

0.887

131.447

2

0.000*

Surface treatment

4.967

1

0.026*

8.268

1

0.004*

Immersion type

18.899

1

0.000*

1.944

1

0.163

Type of ceramic * Surface treatment

14.004

2

0.001*

8.014

2

0.018*

Type of ceramic * Immersion type

2.868

2

0.238

27.698

2

0.000*

Surface treatment * Immersion type

12.435

1

0.000*

0.010

1

0.919

Type of ceramic * Surface treatment * Immersion type

31.471

2

0.000*

2.004

2

0.367

  1. * = p≤0.05; Significant