Porcelain-Fused-to-Zirconia (PFZ)
Porcelain-Fused-to-Zirconia (PFZ) restorations are formed by porcelain being veneered over zirconium oxide. They have become popular with both dentists and patients as they combine strength, durability and aesthetics.
- Metal-free restoration
- Strong core material
- Very good aesthetics by characterisation with veneering ceramic
- PFZ should be avoided in bruxers or patients with parafunctional activities
- Care with case selection for extensive implant-borne zirconia frameworks
- Full coverage zirconia-based restorations with adequate retention do not need resin bonding. Zirconia-based crowns and bridges with good retention can be cemented with resin-modified glass ionomer. If retention is compromised, a resin cement with prior application of a separate self-etching bonding agent is suggested or silica coating eg. CoJet™ or Rocatec™
- Ceramics employed are issued with US IdentCeram® certificates to verify the American Dental Association classification and content of the restorative materials
PFZ has improved aesthetics over monolithic zirconia. High-strength restorations are possible in zirconia in load-bearing areas with veneered porcelain in non-load bearing areas. Avoid use in bruxers or patients with parafunctional activities.
| Property | Details |
|---|---|
| MATERIAL | Veneered zirconia |
| INDICATIONS | Crowns Inlays/onlays Inlay bridges/Maryland (limited) Bridges, long-span bridges |
| IMPRESSION TECHNIQUE | Digital or traditional |
| AESTHETICS | ⭐⭐⭐⭐☆ |
| MARGINS | Shoulder/heavy chamfer |
| ETCH | No |
| DURABILITY | ⭐⭐⭐⭐☆ |
| CEMENTATION | Conventional or adhesive |
| BONDING | ⭐☆☆☆☆ |
| FLEXURAL STRENGTH | 1100 MPa (substructure), 90 MPa (porcelain) |
| METHOD OF MANUFACTURE | CAD/CAM and customisation |
| MATERIAL SHADES/COLOURING | 8 framework shades |
| STAIN RESISTANCE | ⭐⭐⭐⭐⭐ |
| SPAN/INGOT SIZE | Full arch possible (case dependent) |
