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CreoZir T

CreoZir T is a strong, highly translucent zirconia designed to achieve superior esthetics. CreoZir T requires less reduction than monolithic glass ceramic restorations and is kind to natural opposing dentition during occlusal and parafunctional activity. CreoZir T restorations are ideal esthetic solutions for anterior and premolar cases. Indications include single unit crowns and bridges with one pontic. CreoZir T restorations are designed and milled using CAD/CAM technology in our facility to ensure a precise fit.

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  • CreoZir T is a monolithic translucent zirconia crown with no porcelain veneering.

  • Superior esthetics even when monolithic restorations are fabricated

  • High translucency. An alternative to Lithium disilicate

  • Life-like esthetics and color accuracy

  • Traditionally, dental zirconia is predominantly made of fine tetragonal zirconia crystals with small amounts of yttria stabilizer (i.e., 3Y-TZP). While exceptionally strong, 3Y-TZP have poor translucency. To improve translucency of zirconia, an optically isotropic cubic phase into tetragonal zirconia is introduced. This has been achieved by using a higher yttria content to produce partially stabilized zirconia. CreoZir T is fabricated with 4Y-TZP, 5Y-PSZ or 5Y-PSZ combined with 3Y-TZP zirconia materials.

Validations

Light Transmittance of CreoZir T

High translucency and shade accuracy allows esthetics especially for the anterior region as an alternative to lithium disilicate.

Transmittance (%)

(Comparison of the mechanical properties of translucent zirconia and lithium disilicate, J Prosthet Dent 2017, Kwon et al.)

Wear of Opposing Natural Human Enamel Surface on Zirconia

“The wear amount of enamel in this study was higher when enamel was opposed by veneered zirconia (0.6220 gm) mean weight loss in comparison to enamel opposed by full-contour zirconia (0.4004 gm) mean weight loss, this was due to the lower level of enamel hardness when compared to veneering porcelain, and because the fracture toughness of enamel is significantly lower than that of the veneering porcelain.”

(Aboushahba et al., Evaluation of hardness and wear of surface treated zirconia on enamel wear. An in-vitro study, 2018)

Weight Loss of Enamel (gm)

Thickness Requirements

Thickness
Anterior Posterior
Ideal  0.8 1.0
Minimum 0.6 0.6
Margin preference Shoulder or chamfer

Indications

  • Anterior or posterior single unit crowns and bridges

  • Implant crowns and bridges

  • Limited occlusal space

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