Number

Samples

Density (g/cm³)

Comparisons

P values

1

PMMA

1.1712 ± 0.0103

1 vs 2

0.0022*

2

Col-Mx

1.4817 ± 0.0340

1 vs 3

0.0022*

3

Cas-Mx

1.3831 ± 0.0202

2 vs 3

0.7605 NS