Porcelain-Fused-to-Zirconia
Are you looking for an exceptionally esthetic crown and bridge option for anterior, cosmetic cases? Look no further than Mustard Seed Dental’s porcelain-fused-to-zirconia. These crowns and bridges are crafted by layering beautiful porcelain on top of a durable, full-contour zirconia substructure. The porcelain benefits from the translucency of the zirconia and PFZ crowns offer a warmer appearance than porcelain-fused-to-metal alternatives. They also offer an overall improved appearance when compared to PFMs which may sometimes offer esthetic challenges like discoloration or dark lines along the gingiva.
Benefits: Lifelike esthetics, accurate fit, and natural translucency.
Indications
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.
Feather-edge margin preparations are indicated for full-cast restorations.
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