Crown and Bridge Prep Design Guides

Incorrect margin design and insufficient prep reduction can lead to case delays and refabrications.

We've outlined the ideal design parameters based on the restoration material below. This will help you determine the necessary reduction or clearance when preparing a patient's treatment and submitting orders to Dandy.

Materials Occlusal Clearance Axial Wall Reduction Margin Type Margin Thickness
Zirconia Monolithic 1.5mm 1.2mm Shoulder or Chamfer 1.0mm
Zirconia Translucent Aesthetic 1.5mm 1.2mm Shoulder or Chamfer 1.0mm
PFZ - Porcelain Fused to Zirconia 2.0mm 1.5mm Shoulder or Chamfer 1.0mm
PFM - Porcelain Fused to Metal 2.0mm 1.5mm Shoulder or Chamfer 1.0mm
Full Metal Crown 1.0mm 1.0mm Shoulder or Chamfer 0.5mm
Emax - Lithium Disilicate 1.5mm 1.2mm Shoulder or Chamfer 1.0mm
Layered Emax - Layered Lithium Disilicate 2.0mm 1.2mm Shoulder or Chamfer 1.0mm
Emax Veneer 1.0mm 0.6mm Chamfer 0.5mm

 

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