Screw-retained, full contour CAD/CAM, Zirconia crown.
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ZirONE-Ti FCZ™ Solid Zirconia is a monolithic zirconia crown, bridge, screw-retained implant crown, inlay or onlay with no porcelain overlay. First launched as being “More Brawn Than Beauty,” the material was originally intended to provide a durable, more esthetic alternative to posterior metal occlusal PFMs or cast gold restorations for demanding situations like bruxers, implant restorations and areas with limited occlusal space. Now, thanks to advanced techniques Zir-ONE™ restorations exhibit improved translucency and color similar to natural dentition, making them a restorative option in the anterior as well. Complete color penetration all the way through the restorations ensures greater shade consistency and prevents any shade changes after occlusal adjustment.
Designed and milled using CAD/CAM technology, Zir-ONE™ Solid Zirconia is sintered for 2.0 hours at 1,530 degrees Celsius to achieve optimum strength. The final crown or bridge is then glazed to a smooth surface.
*Although highly accepted and widely utilized Ti base (Zirconia Abutment with a Titanium sleeve) abutments are NOT a brand authentic component. If ABUTMENT failure occurs we will replace the abutment & crown free of charge. We believe IMPLANT failure is typically due to Biologic challenges causing poor osseointegration and NOT linked to the abutment component. Therefore we do not warranty the implant. To maintain Implant System warranties we recommend our Gardali ImplantONE-AUTHENTIC™ components.
Zir-ONE-Ti™ is indicated for crowns, bridges, implants, inlays and onlays. It is an esthetic alternative to PFM metal occlusal/lingual or full-cast restorations. The chip proof durability of a Zir-ONE™ restoration is ideal for bruxers who have broken natural teeth or previous PFM restorations. Zir-ONE™ is also ideal when the patient lacks the preparation space for a PFM.
- Chip-resistant, as it is made of solid zirconia with no porcelain overlay
- Glazed to a smooth surface to reduce plaque accumulation
Preparation Requirements for Zir-ONE™ Crowns & Bridges
- 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.
Instructions for Adjusting and Polishing Zir-ONE™ Crowns & Bridges
- Adjust Zir-ONE™ restorations using a fine-grit diamond with light pressure to avoid potential microfractures.
- A football-shaped bur is most effective for adjusting the occlusal surfaces of posterior teeth and lingual surfaces of anterior teeth.
- A tapered bur is most effective for adjusting proximal contacts.
- A round bur is used to adjust a cusp or fossa and for creating endodontic access.
Do Not Use Discs To Finish Full-Contour Zirconia
- Ceramir® Crown & Bridge (Doxa Dental; Newport Beach, Calif.) or a resin-reinforced glass ionomer cement such as RelyX™ Luting Cement (3M ESPE; St. Paul, Minn.) or GC Fuji Plus™ (GC America; Alsip; Ill.)
- For short or over-tapered preparations, use a resin cement such as RelyX™ Unicem (3M ESPE) or Panavia™ F2.0 (Kuraray; New York, N.Y.)
Instructions for Seating Zir-ONE™ and Other Zirconia-Based Crowns & Bridges
Zir-ONE™ restorations are fabricated from solid zirconia oxide material, much like the zirconia oxide coping found in restorations such as Prismatik Clinical Zirconia™, Lava™ Zirconia (3M ESPE; St. Paul, Minn.), and NobelProcera™ (Nobel Biocare; Yorba Linda, Calif.). Like most metals, zirconia exhibits a strong affinity for phosphate groups, and zirconia oxide is no different. We can take advantage of this fact with phosphate-containing primers, such as Monobond Plus (Ivoclar Vivadent; Amherst, N.Y.) and Z-Prime™ Plus (Bisco; Schaumburg, Ill.), or cements such as Ceramir® Crown & Bridge (Doxa Dental; Newport Beach, Calif.). Unfortunately, saliva also contains phosphates in the form of phospholipids, so when a Zir-ONE™ crown or bridge is tried in the patient’s mouth and comes in contact with saliva, the phosphate groups in the saliva bind to the zirconia oxide and cannot be rinsed out with water. Attempting to use phosphoric acid (which is full of phosphate groups) to “clean” the saliva out only makes the problem worse.
The only way we have found to successfully remove these phosphate groups from the interior of a Zir-ONE™ restoration is with the use of Ivoclean (Ivoclar Vivadent). This is a zirconia oxide solution placed inside the restoration for 20 seconds and then rinsed out. Due to the large concentration of free zirconia oxide in the Ivoclean, it acts as a sponge and binds to the phosphate groups that were previously bound to the Zir-ONE™ restoration. Once the Ivoclean is rinsed out, you will have a fresh bonding surface for the Monobond Plus, Z-Prime Plus or Ceramir to bond to.
The protocol would be:
- Try in Zir-ONE™ or zirconia-based restoration.
- Rinse saliva out of restoration.
- Place Ivoclean in restoration for 20 seconds and rinse.
- Cement restoration with Ceramir –or– place Monobond Plus/Z-Prime Plus and place with cement of your choice.
- D2740 Crown – Porcelain/Ceramic Substrate
- D6245 Pontic Porcelain/Ceramic
- D6740 Abutment Crown Porcelain/Ceramic
Call our technical team at 800.773.6764 or email us at Info@Gardalilab.com
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