1. Scope of application: ordinary crowns;
2. 3D printed crowns and brackets;
3. Machine-carved crowns and brackets;
4. Cast porcelain.
Advantages:
(1) Simple operation, low temperature ring burning, saving time.
(2) Improve the quality of cast metal.
(3) Reduce the probability of long bridge deformation.
(4) Improve the bonding effect of gold and porcelain.