Preparation Guidelines
General specifications:

1. Use a chamfer margin around the gingival margins. Margins that extend to the occlussal or incisal must be a 90 or butt joint.
2. Avoid sharp angles.
3. Maintain an even reduction of anatomical form.
4. These are minimum reductions. Strength and opacity will be increased with more tooth reduction.

Inlay/Onlay Preparation Protocol

Veneer Preparation Protocol

Metal-Free Preparation Protocol

Note: Metal-free bridge proximal connector are 1.5 to 2.0-mm reduction

Cristobal is a trademark of Ceramco