Biomedical Engineering Reference
In-Depth Information
140
120
100
80
60
40
20
Enamel
0
Dentin
Esthet-X
Grandio
Supreme XT
FIGURE 4.10
Comparative graph of flexural strength (MPa) of nanofilled
composites in enamel and dentin shades.
Source: Balbinot and Mota (2006).
14
12
10
8
6
4
2
Enamel
0
Dentin
Esthet-X
Grandio
Supreme XT
FIGURE 4.11
Comparative graph of flexural modulus (GPa) of nanofilled
composites in enamel and dentin shades.
Source: Balbinot and Mota (2006).
literature, 12-14 GPa has been reported as elastic modulus of human dentin. Restorative materials are
expected to perform like natural dentin; however, different behavior is presented in
Figure 4.11
.
4.8.4
Microhardness
The hardness test measures the ability of a material to be indented or abraded by another mate-
rial. In dentistry, microhardess is commonly used due to smaller sample dimensions and multiple
