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.

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

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