Zirconia Restoration Guide

 

The following information may be helpful in understanding the best applications of our zirconia restorations.  These popular restorations continue to evolve in tandem with technology and industry demands.  As a note, we use only the highest quality materials from the best manufacturers in the world.  Our reputation and yours demand it.

1. IPS e.max® ZirCAD (formerly Zenostar®). (monolithic zirconia by Ivoclar Vivadent) This high strength monolithic zirconia restoration is digitally designed and milled using the latest in digital restorative technology. Select ZirCAD for its precision fit, 1200 MPa strength, tooth shade and cementable quality. This is the least translucent zirconia; excellent for molar use but not typically suitable in the anterior.

Indications: Perfect for molar use and bridges. Cementable over most dark stump shades and metal implant abutments with minimal bleed through.
Contra-indications: Not typically suitable in the anterior region due to limited translucency and exacting shade control.
Preparation: 0.5mm minimal reduction occlusally, axially with 0.8mm champher margins preferred for best fits.
Seating: Cementable with any conventional crown and bridge cement.
Shade Guide: Best suited for bleach shades, A1, A2, A3, B1, B2, B3, C1 and 1M1 through 2R2.5.
Additional: Our ceramists are able to layer to the facial incisal surface for better esthetics with an additional charge.

2. Lava™ Esthetic Fluorescent Full-Contour Zirconia. (monolithic zirconia by 3M™) The first monolithic zirconia to offer inherent fluorescence features built-in color technology for the best shade matching in any light. A high level of translucency and flexural strength of 800 MPa combine in this material to provide astounding natural esthetics in a durable restoration.

Indications: Single units, bridges and inlays/onlays. Esthetic alternative to a PFM.
Contra-indications: Limited to three-unit bridge work.
Preparation: A mild champfer or a porcelain shoulder margin is ideal. 0.8mm buccal, lingual and occlusal reduction is ideal.
Seating: Cementable with any conventional crown and bridge cement, and bondable to a limited degree.
Shade Guide: Currently available in all shades except A4, D4 and 4 through 5 in the 3D Master Shade Guide.
Additional: Our ceramists are able to layer to the facial incisal surface for better esthetics with an additional charge.

3. Imagine™ High Translucency Zirconia. (monolithic zirconia/alumina blend by Jensen Dental) his high-translucency monolithic zirconia is a blend of 80% Zirconia and 20% Alumina to provide the same precise fit of ZirCAD with the translucency of e.max® Press. At 769 MPa, Imagine™ is recommended for the posterior up to three unit bridges and some anterior cases. Due to the translucency like e.max® Press, it cannot be used when the stump shade is dark. Preparation requirements are similar to e.max® Press.

Indications: This restoration can be suitable for all areas when the stump shade is not too dark. Also for use in small three unit bridgework.
Contra-indications: We do not recommend this monolithic zirconia restoration for single anterior teeth where “e.max® Press” can be used.
Preparation: 1.5mm minimal reduction occlusally, 1.5mm axially with champher margins 0.8mm preferred for best strength and fits.
Seating: Cementable with any conventional crown and bridge cement, although the translucency may allow some cement shades to affect the final crown shade.
Shade Guide: Best suited for C and D shades, as well as 3L1.5 through 5M3. All shades tend to be lower in value.

4. Traditional Zirconia. (zirconia coping with layered porcelain) This is a zirconia coping hand stacked and layered on all surfaces. This restoration is best suited when esthetic demands are high in the anterior but stump shade is too dark for IPS e.max® Press. Due to the relatively low strength of layering porcelains for zirconia we do not recommend this restoration in the molar region.

Indications: Best suited in the anterior when esthetic demands are high but the stump shade is too dark for IPS e.max® Press.
Contra-indications: Due to the relatively low strength of layering porcelain for zirconia, we do not recommend this zirconia restoration in the molar region, or over long bridge spans.
Preparation: 1.5mm minimal reduction occlusally, axially with champher margins preferred for best fits.
Seating: Cementable with any conventional crown and bridge cement.
Shade Guide: Excellent for all shades.
 

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