Shear Bond Strength of Zirconia versus Zirconium Silicate Filled Indirect Composite Resin

Document Type : Original Article


1 Conservative Dentistry Department, Division of Fixed Prosthodontics, Faculty of Oral and Dental Medicine. Misr International University

2 Conservative dentistry department, division of fixed prosthodontics, faculty of oral and dental medicine, Misr International University.

3 Fixed Prosthodontics Department. Faculty of Dentistry, Cairo University.


The aim of this study was to determine the shear bond strength of zirconium dioxide and indirect zirconium silicate filled composite resin materials bonded to dentin using self-adhesive resin cement. According to the materials used, a total of 20-disc samples with dimensions of 10 mm in diameter and 2 mm thickness were equally divided into two groups (n=10). Group I: Zirconia ML (Katana, Kurary Noritake, Tokyo, Japan) and Group II: Ceramage “indirect zirconium silicate filled resin composite material (Shofu, Tokyo, Japan). Samples of both groups were bonded with self-adhesive resin cement to dentin. Universal testing machine (Instron) was used to measure the shear bond strength. Results: A higher mean shear bond strength value (5.67 + 3.36 MPa) was recorded with Ceramage (Group II), while a lower mean value (3.44 + 1.57 MPa) with Zircona ML (Group I). Statistical analysis revealed no statistically significant difference between both tested groups. Conclusions: Indirect composite resin material filled restorative material did not show any significant increase in shear bond strength when compared to Zirconia ML restoration.


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