Table 1.
Material | HVc (GPa) | E (GPa) | Kc (Mpa*m0.5)b | B (µm−1) |
---|---|---|---|---|
Human Enamel (young) | ||||
Inner | 3.1 | 75 | 0.88 | 305 |
Middle | 3.5 | 82 | 0.88 | 375 |
Outer | 4.1 | 87 | 0.95 | 393 |
Human Enamel (old) | ||||
Inner | 3.0 | 79 | 0.88 | 313 |
Middle | 3.4 | 90 | 0.73 | 582 |
Outer | 4.0 | 100 | 0.67 | 897 |
Micaceous Glass Ceramicsa | ||||
Fine (d=1.1 µm) | 4.2 | 71 | 1.04 | 271 |
Medium-fine (d=1.8 µm) | 3.6 | 70 | 1.18 | 180 |
Medium (d=3.7 µm) | 3.4 | 68 | 1.31 | 135 |
Coarse (d=10 µm) | 2.7 | 50 | 1.65 | 49 |
Cmacor glass (d=15 µm) | 1.8 | 64 | 1.50 | 51 |
Feldspathic Porcelainsa | ||||
Leucite Body | 5.6 | 67 | 1.14 | 288 |
Leucite Incisal | 5.3 | 65 | 1.26 | 216 |
Leucite Finesse | 5.6 | 70 | 0.99 | 402 |
Leucite Empress | 5.6 | 67 | 1.03 | 353 |
Nepheline syenite | 6.3 | 70 | 1.19 | 310 |
Dissimilarsa | ||||
Zirconia | 13.9 | 210 | 4.90 | 122 |
Glass-infused alumina | 11.7 | 250 | 3.10 | 304 |
Glass-ceramic | 5.5 | 104 | 2.80 | 73 |
from Quinn et al, [18]
values obtained using indentation and represent apparent toughness (Kc(app))