An ideal treatment for anterior restorations where appearance is paramount, our CDL ¾ Full-Contour Crowns combine the strength of zirconia with the natural translucency of porcelain. We micro-cut the facial side of a precision-milled full-contour crown, then finish it with porcelain for a superior aesthetic.
CDL ¾ Full-Contour crowns 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.
CDL ¾ Full-Contour crowns should not be used for posterior restorations, or in situations when preparation requirements cannot be achieved.
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 CDL 3/4 Full-Contour zirconia 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 CDL 3/4 Full-Contour restorations with the porcelain polishing system of your choice.
- 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)
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.
- D2740 Crown – Porcelain/Ceramic Substrate
- D6245 Pontic Porcelain/Ceramic
- D6740 Abutment Crown Porcelain/Ceramic