Porcelain Layered Zirconia

Advantages/Benefits

• Proven aesthetics

• Strength

• Versatility

  
  

Cementation

Conventionally cemented

Indications

• Anterior: crowns and bridges

• Posterior: crowns and bridges

  
  

With an ongoing commitment to research and development, our dental lab proudly offers the next generation in ceramic restorations: PlZ, Porcelain Layered to Zirconia. With the structural strength of zirconia and the esthetics of porcelain, our PLZ Restorations offer a combination of beauty and strength like no other. Using our innovative expertise, our dental lab has consistently and successfully created many PLZ restorations with absolutely incredible results.

Porcelain layered to Zirconia combines pure yttria-stabilized zirconia with the beauty of ceramics. This allows for uniform aesthetics and better tissue adaptation. Ceramics are available in 16 natural shades and 4 bleach shades, with enhanced opalescent light transmission properties and excellent blending capabilities.

Full Monolithic Zirconia (FMZ)

Zirconia is a fully contoured Zirconia crown and bridge restoration with no porcelain overlay.  Scanned and designed from your conventional, analog impression or digital impression in our Computer Aided Design Software these restorations are then milled in our milling machines.

This CAD/CAM work flow ensures precise marginal fit, and design parameters in line with your preferences for contacts, occlusion, and overall contour.  We finish each unit carefully to ensure a highly smooth and polished finish that will not wear the opposing dentition.  Our most artistic technicians stain and glaze each unit to ensure maximum aesthetics.

Indications:
Indicated for posterior crown and bridge restorations.   Full contour zirconia serves a viable alternative for bruxers and grinders when the patient has previously broken or will likely damage a traditional PFM.  As these restorations are substantially more aesthetic than full-cast restorations and cost far less, they have become a very popular alternative.

Contra-Indications:

Preparation
We prefer a traditional chamfer preparation with at least 1.0 mm of reduction at the margin and 2.0 mm of anatomical occlusal reduction.  This material can be made much thinner, but our CAD/CAM milling systems produce far greater consistency with more classic-type of preparations.  Please avoid all undercuts, and do not bevel the preparation.

Cementation:

Recently, new products have been developed that increase the bond of resin cements to zirconia. Data from outcome studies have confirmed that a combination of airborne particle abrasion (50 micron Al2O3 at 2.5 bar) and resin composites containing 10-methacryloyloxydecyl dihydrogen phosphate (MDP) monomer, achieve a durable bond of zirconia to a prepared tooth. For example, the 3M Scotchbond Universal Adhesive contains the MDP monomer, which optimizes its self-etch performance when used in combination with Relyx Ultimate adhesive resin cement.Zirconia-based crowns and bridges with good retention can be cemented with resin-modified glass ionomer.