ADA Codes

• D2740 crown – porcelain/ceramic substrate
• D6245 pontic – porcelain/ceramic (bridge units)
• D6740 crown – porcelain/ceramic (bridge units)

Features

• Hypoallergenic
• Biocompatible
• Improved Esthetics over PFMs
• Requires Conventional Cementation

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

Preparations

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 Scannaire (Kerr)
• Panavia F 2.0 (Kuraray) - ideal for short, tapered preparations
• Glass ionomer cement (GC Fuji, GC America)

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).