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ZirTek™ Ultra

ZirTek™ Ultra

Our ZirTek™ line of zirconia offers a strong solution for all your restorative needs and is available exclusively from Dental Masters Laboratory. The ZirTek™ line of products focuses on durability and esthetics; there is a ZirTek™ product for every indication imaginable.

ZirTek™ Ultra is the perfect highly-esthetic restorative product for both posterior and anterior regions. This crown and bridge option has a flexural strength of 800 MPa while still being one of the most lifelike restorations available. ZirTek™ Ultra is the first 4-shade layered zirconia with amazing color gradation and fluorescence, making highly esthetic and natural restorations.

Along with the rest of our ZirTek™ line of restorations, ZirTek™ Ultra has a lab turnaround time of 5 days and comes with a 7-year warranty.

Indications

Full-contour zirconia is so versatile, it can be used in almost any situation from singles, bridges with any combination of abutments and pontics, inlay bridges, Maryland type bridges and screw-retained implants. Also an esthetic alternative to a PFM with metal occlusion due to limited space.

Contraindications

When esthetic expectations are high and it is important that the restorations match surrounding natural dentition or other existing restorations. If bonding is necessary to retain the restoration, bond strength is weaker and less predictable than other ceramics.

Preparation

Shoulder preparation not needed. A mild chamfer or a feather-edge margin is good. 1mm buccal, lingual, and occlusal reduction is ideal, but can go to .5mm in some areas when reduction is limited. Minimum occlusal reduction of 0.5 mm; 1 mm is ideal. Adjustments and polishing: Adjust full-contour zirconia crowns and bridges using water and air spray to keep the restoration cool and to avoid microfractures 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 full-contour zirconia restorations with the porcelain polishing system of your choice.

Cementation

Full-contour zirconia may be cemented using a resin reinforced glass ionomer such as RelyX Luting cement. When a greater bond is needed due to the lack of a retentive preparation, use resin cement like RelyX Unicam or RelyX Ultimate. Before cementing all full-contour zirconia crowns, the interior surface of the crown needs to be cleaned with Ivoclean (Ivoclar Vivadent - Amherst, NY). This is critical in assuring maximum bond strength.

Tech Notes

Solid zirconia requires a cast gold type preparation. If adjustments are needed, use zirconia specific diamonds and rubber wheels polishing with diamond paste.

Codes

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