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Table 5 Vickers hardness of materials before and after thermocycling. Different capital letters in the same column and different small letters in the same row indicate significant difference (p < .01)

From: Evaluation of five CAD/CAM materials by microstructural characterization and mechanical tests: a comparative in vitro study

Vickers Hardness (VHN)

 

1 p

Before Thermocycling

After Thermocycling

Mean ± SD

Mean ± SD

VIT

6.4 ± 0.1 A,a

6.3 ± 0.1 A,a

0.733

EMP

6.1 ± 0.1 A,a

6.1 ± 0.1 A,a

0.196

MAX

5.8 ± 0.1 A,a

5.8 ± 0.1 A,a

0.946

ULT

1.1 ± 0.1 B,a

0.8 ± 0.1 B,b

0.001**

ENA

2.3 ± 0.1 B,a

1.9 ± 0.1 B,b

0.001**

2 p

0.001**

0.001**

 
  1. **p < 0.01
  2. 1Student’s t test
  3. 2One-way ANOVA Test