The Effect of Surface Treatment on the Shear Bond Strength of Porcelain by HF Acid Etching and Sandblasting Technique on Chrome-Cobalt Alloy That Fabricated by 3D Printer and Conventional Casting

Mohammed, Enas Kareem

doi:10.25130/tjds.13.1.26

	The Effect of Surface Treatment on the Shear Bond Strength of Porcelain by HF Acid Etching and Sandblasting Technique on Chrome-Cobalt Alloy That Fabricated by 3D Printer and Conventional Casting
Tikrit Journal for Dental Sciences
Volume 13, Issue 1, June 2025, Pages 263-271 PDF (445.49 K)
DOI: 10.25130/tjds.13.1.26
Author
Enas Kareem Mohammed^*
Department of Preventive Dental Technology, Middle Technical University, Technical Medical Institute, Baghdad, Iraq
Abstract
Objectives: The search designed to assess the impact of several surface treatments on the CO-CR alloy and fused feldspathic ceramic's shear bond strength. fabricated utilizing two different techniques lost wax and 3-D-printed laser melting. Methods: A total of 40 rectangular pillars (CO-CR) alloys utilizing two various techniques (lost wax technique and 3D-printed) were separated into 2 groups with subgroups based on the surface treatment (n=10). To obtain a shear bond test a universal testing machine was used after surface treatment of the specimen with sandblasting by aluminum oxide and etching by HF acid. The result of the Shear bond strength test as well as, there was a failure mode identified. and analyzing data using LSD tests (a 0.05). Result: Bond strength was noted stronger in CO-CO specimens with the 3D-printed technique with sandblasting surface treatment than etching by HF acid. Conclusion:Using sandblasting with aluminum oxide on different CO-CR alloys improves the bonding strength with ceramic.
Keywords
Co-Cr alloy; Dental ceramic; sandblasting by aluminum oxide HF acid etching Shear bond strength; Lost wax technique

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