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Masters Thesis | Dentistry | Egypt | Volume 12 Issue 2, February 2023

Effect of Surface Treatment of Translucent and Conventional Zirconia on the Surface Roughness

Basma S. Mohammed | Samaa N. Kotb | Hesham E. Alansary

Abstract: Statement of problem: Although conventional zirconia had demonstrated a very acceptable clinical performance but still have some limitation. Its low translucency adversely affects the final aesthetic outcome. On one hand, porcelain layering could solve the problem, on the other, it creates another drawback in the form of the possibility of delamination of the porcelain veneer. Purpose: The aim of this study was to evaluate the effect of surface treatment of translucent zirconia, in comparison to conventional zirconia on the surface roughness. Material and Methods: A total of twenty zirconia plates (n=20) were assigned into two equal groups (n=10). Group (A) constructed from translucent plates (n=10) were air blasted with 50?m aluminum oxide particles, and group (B) was assigned to the conventional plates (n=10) and air blasted with 110?m aluminum oxide under the same conditions. The surface roughness test was performed using an optical profilometer. Results: The values of surface roughness recorded with the translucent plates were higher than those recorded with the conventional zirconia specimens with non - significant differences. Conclusions: Both conventional and translucent zirconia's surface roughness increased after alumina blasting. Alumina air abrasion of translucent zirconia could achieve a sufficient bond strength comparable to that of conventional zirconia.

Keywords: Translucent Zirconia, Alumina air abrasion, Resin cement, Shear bond strength

Edition: Volume 12 Issue 2, February 2023,

Pages: 126 - 130

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