PFZ
Porcelain-fused-to-zirconia restorations are an excellent and esthetic alternative to porcelain-fused-to-metal crowns. Our expert technicians craft this restoration by layering esthetic porcelain over a zirconia substructure. PFZs provide the strength of PFM crowns while eliminating esthetic challenges, such as discoloration or the dark line that can appear along the gingiva. They are also a good option for ceramic veneers. Through the use of the most advanced CAD/CAM technology, they provide consistently accurate fit. Due to zirconia's natural translucency, these crowns are warmer and provide superior lifelike coloration when compared to their PFM counterparts.
Send a CaseIndications
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.
Contraindications
- Attachment cases
- Cases with less than 1 mm clearance
- Bruxism
- Patients who have broken a PFM crown
- Cases that require bonding
Preparation
The ideal preparation for PFZs is a chamfer margin preparation. If a porcelain labial margin is prescribed, then a shoulder margin preparation is required.
Cementation
- Resin Ionomer cement (RelyX or RelyX Unicem, 3M ESPE)
- Maxcem Elite (Kerr)
- Panavia F 2.0 (Kuraray) - ideal for short, tapered preparations
- Glass ionomer cement (GC Fuji, GC America)
Tech Notes
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).
Codes
- D2740 Crown - porcelain / ceramic substrate
