Table 8.
Comparison of the hardness of the as-synthesized composites (AR, CmC, WC, and CC) with the literature
| Blank (matrix) | Load (N) | Composite (matrix + fillers) | Fillers | Filler optimum concentration (Wt%) and conditions | Hardness (HV) | References |
|---|---|---|---|---|---|---|
| Human teeth (Ref.) 350–509 HV | ||||||
| PMMA | 2 | AR | – | – | 29.3 | Present work |
| CmC | Commercial HA | 0.8 | 130 | |||
| WC | Whiskers HA | 0.6 | 295 | |||
| CC | Cubic HA | 0.4 | 352 | |||
| PMMA | 8 | AR | – | – | 53.1 | Present work |
| CmC | Commercial HA | 0.8 | 187 | |||
| WC | Whiskers HA | 0.6 | 324 | |||
| CC | Cubic HA | 0.4 | 459 | |||
| CP (calcium phosphate) | 1.96 | CP | – | – | 530 | [64] |
| 2% Sr-CP | Sr | 2% | 531.3 | |||
| 4% Sr-CP | Sr | 4% | 553.7 | |||
| 8% Sr-CP | Sr | 8% | 558 | |||
| PVP | 1.96 | HA-PVP | Rod-shape HA particles | Sintered at 1230 °C | 433 | [62] |
| CTAB | 1.96 | HA-CTAB | Rod-shape HA particles | Sintered at 1200 °C | 560 | [62] |
| PMMA (artificial teeth) | 2 | – | – | Cured for 3 cycles at 30 °C, 95 °C, 155 °C | 29.3 | [60] |
| 10 | – | – | Cured for 3 cycles at 30 °C, 95 °C, 155 °C | 54.3 | ||
| HA ceramics | 4.9 | Rod-shape HA ceramic | – | 3 g/ml ceramic sintered at 1250 °C | 258 | [63] |
Bold entries represent optimum properties