Honchon Smile Open CADCAM System Compatible PMMA disc is made of special Polymethyl methacrylate, which has increased translucency and superior mechanical properties. It is designed for production of long or short term temporary restorations, cemented or screw retained replacements.
Available color ：VITA 16 shades, clear, pink .But Shade A1 A2 A3 are most popular .
Advantages:
Specification:
| Hardness | 75-85 Shao |
| Melting Point | 240-270 degree |
| Density | 1.19 |
| Toughness | Good |
| machinability | Excellent |
| Ash | 0.032% |
| Shrinkage | 0.50% |
