The occlusal surfaces of posterior teeth generally require 1.5 to 2 mm of clearance. Occlusal reduction may be less if the crown is fabricated with a metal occlusal surface or a metal bite stop. All margins sho
What Is a PFM Crown? PFM crowns are a class of bilayered restorations that have a metal substructure and a ceramic top layer. PFM (porcelain fused to metal) crowns are bilayered restorations made by layering ceramic over a metal substructure. Traditionally, feldspathic porcelain was used for mos...
This study compared two implant crown materials and evaluated the effect of cusp inclination and occlusal contact distribution on resultant stresses. Methods Thirty 3D finite element models of implant-supported PFM and PEEK crowns, generated using Solidedge 3D CAD solid modeling software (v19, Siemens ...