Aimzir™ FCZ with Facial Cutback

Zirconia’s strength meets the esthetics of conventional porcelain on our Aimzir™ Facial Cutback. We mill a standard full-contour zirconia crown, then reduce the facial region to allow our ceramists to add a layer of porcelain. The result is a more lifelike restoration than conventional zirconia.

Indications

Full-Contour Zirconia crowns with micro cutback are indicated for anterior crowns and bridges of up to six units between teeth number 6 and 11 or 22 and 27. ¾ Crowns with microcut and porcelain faces are ideally suited for cosmetic restorations in the smile zone.

Contraindications

Full-Contour Zirconia crowns should not be used for posterior restorations, or in situations when preparation requirements cannot be achieved.

Preparation

Shoulder preparation not needed, feather edge is okay. It is a conservative preparation similar to full-cast gold, so any preparation with at least 0.5 mm of occlusal space is accepted.

Minimum occlusal reduction of 0.5 mm; 1 mm is ideal.

Adjustments and polishing:

Adjust FCZ crowns and bridges using water and air spray to keep the restoration cool and to avoid micro-fractures with a fine grit diamond. If using air only, use the lightest touch possible when making adjustments. A football shaped bur is the most effective for occlusal and lingual surfaces (on anterior teeth); a tapered bur is the ideal choice for buccal and lingual surfaces.

Polish FCZ restorations with the porcelain polishing system of your choice.

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

Solid zirconia requires a cast gold type preparation.

Anteriors may have a facial veneer of porcelain but the occlusion will remain in 100 percent zirconia. Final Zirconia restorations are glazed to a smooth surface to reduce plaque accumulation.

Codes

  • D2740 Crown – Porcelain/Ceramic Substrate
  • D6245 Pontic Porcelain/Ceramic
  • D6740 Abutment Crown Porcelain/Ceramic