Exterior | The fiber post shall be free of defects such as burrs, cracks, scratches, powders, obviously exposed fibers, and obviously not dipped red |
Internal pores | Observe the inside of the fiber post with a magnifying glass of 10 times, there should be no visible pores |
Bending performance | >=700MPa |
Flexural modulus of elasticity | 20-40GPa |
X-ray blocking performance | Should be visible under X-ray |
Tensile bonding strength | >=2MPa |
Shear bonding strength | >=6MPa |
Ignition residue content | Not less than 60% |