All-ceramic teeth rely on binding force, friction and adhesive force to be fixed on the teeth. 1. binding force. All-ceramic teeth fixed on the tooth can be used to nail holes, ring, hole fixed shape to limit the horizontal direction of the restoration of the movement of the crown to play a binding role in the activities of the crown. 2. Friction. The larger the surface area of the axial surface of the tooth preparation, the stronger the retention force, so the tooth preparation needs to remove the axial surface of the inverted concave, at the same time to the joint side of the polymerization of 2 to 5 degrees can be obtained larger friction force. 2. Adhesive force. Crown and tooth retention also need adhesive force, relying on the cementum will be restorations and preparations between the adhesive together, play a role in supporting retention. All-porcelain teeth fixed on the teeth mainly rely on the formation of tooth replacement after the preparation of the fixed type, you need to go to a professional dental hospital for production.