PFZ

Porcelain-fused-to-zirconia restorations provide the high esthetics of porcelain with the extreme flexural strength of monolithic zirconia. Crafted by layering porcelain over a zirconia substructure, this restoration eliminates the common esthetic challenges that accompany porcelain-fused-to-metal products. These issues include discoloration and the black line that appears along the gingiva. Zirconia’s natural translucency provides a warmer and more lifelike coloration to these crowns that cannot be found with their traditional PFM counterparts.

PFZ

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.

  • Attachment cases
  • Cases with less than 1 mm clearance
  • Bruxism
  • Patients who have broken a PFM crown
  • Cases that require bonding

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.

  • 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)

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).

  • D2740 Crown - porcelain / ceramic substrate