Zirconia crown is composed of zirconium- a heavy-duty, biocompatible substance which is also used by surgeons in their patient’s artificial joints. We’ve researched around the world and picked Zirconia materials that provide a perfect combination of strength and natural esthetics.
-Zirconia is ideal for posterior full crowns and bridges and can also be used as substructure for layered anterior single crowns and bridge restorations.
-Zirconia is a good choice for anterior monolithic single crowns and bridges up to 4 units, bridges may extend to the second premolar.
Contraindications include:
-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
-It is not necessary to use a shoulder preparation, and feather edge preparations are acceptable. The ideal minimum margin preparation is .3 mm chamfer, but all margin preparations may be used, including a full shoulder.1 mm axial wall reduction
-1 mm axial wall reduction1 mm cingulum / occlusal reduction required.
-1 mm cingulum / occlusal reduction required
Note: As with any all-ceramic, no sharp or right angles.
-Zirconia can be placed with either conventional cements or bonded, making it fit into whatever procedures work best for you in your clinical judgement.
-Zirconia can be bonded using adhesive systems with dual cure resins, or cemented using low expansion cements, like resin-modified glass ionomers.