Evaluation of Shear Bond Strength Between Zirconia Core and Ceramic Veneers Fabricated by Pressing and Layering Techniques: In Vitro Study

Overview

Journal J Pharm Bioallied Sci

Specialty Pharmacology

Date 2015 Nov 6

PMID 26538929

Citations 2

Authors

M Subash

D Vijitha

Saikat Deb

A Satish

N Mahendirakumar

Affiliations

Soon will be listed here.

Abstract

Statement Of Problem: Although ceramic veneered on to zirconia core have been in use for quite some time, information regarding the comparative evaluation of the Shear bond strength of Pressable & Layered ceramic veneered on to zirconia core is limited.

Purpose Of Study: To evaluate the shear bond strength of zirconia core and ceramic veneer fabricated by two different techniques, Layering (Noritake CZR) and Pressing (Noritake, CZR Press).

Materials And Method: 20 samples of zirconia blocks were fabricated and the samples were divided into group A & B. Group A - Ceramic Veneered over zirconia core by pressing using Noritake CZR Press. Group B - Ceramic Veneered over zirconia core by layering using Noritake CZR. The veneered specimens were mounted on to the center of a PVC tube using self-cure acrylic resin leaving 3 mm of the veneered surface exposed as cantilever. Using a Universal testing machine the blocks were loaded up to failure.

Result: The results were tabulated by using independent samples t-test. The mean shear bond strength for Pressed specimens was 12.458 ± 1.63(S.D) MPa and for layered specimens was 8.458 ± 0.845(S.D) MPa.

Conclusion: Pressed specimens performed significantly better than the layered specimen with a P value 0.001. Clinicians and dental laboratory technicians should consider the use of pressed ceramics as an alternative to traditional layering procedures to reduce the chances of chipping or de-lamination of ceramics.

Citing Articles

A comparative evaluation of shear bond strength between feldspathic porcelain and lithium di silicate ceramic layered to a zirconia core- An study.

Moses A, Ganesan L, Shankar S, Hariharan A J Clin Exp Dent. 2020; 12(11):e1039-e1044.

PMID: 33262869 PMC: 7680571. DOI: 10.4317/jced.57569.

Shear Bond Strength of Porcelain to a Base-Metal Compared to Zirconia Core.

Abrisham S, Fallah Tafti A, Kheirkhah S, Tavakkoli M J Dent Biomater. 2017; 4(1):367-372.

PMID: 28959767 PMC: 5608052.

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