When PFM crowns are not possible or desired, porcelain-fused-to-zirconia restorations are an excellent alternative. Their flexural strength of up to 1,450 MPa makes them practically indestructible. They are hypoallergenic and biocompatible. Our team crafts them by layering esthetic porcelain over a zirconia substructure. The porcelain overlay means that this option eliminates common esthetic challenges found with PFMs, including discoloration or the dark line that can appear along the gingiva. Due to zirconia’s natural translucency, these crowns are warmer and provide superior lifelike coloration when compared to PFMs. They require conventional cementation and are a good option for ceramic veneers. Our CAD/CAM technology allows us to fabricate them with an extremely accurate fit.
A CAD/CAM substitute for traditional PFM, our porcelain-fused-to-zirconia can be used for anterior and posterior crowns, crowns over implants, and bridges of up to fourteen units.
The ideal preparation for PFZs is a chamfer margin preparation. If a porcelain labial margin is prescribed, then a shoulder margin preparation is required.
If an adjustment is required on the ceramic, use a fine diamond with water and air to keep the crown cool. To contour the ceramic, polish with a pink rubber wheel and diamond polishing paste (Brasseler, Shofu, Vident).