Flexural Strength of Milled Cobalt Chromium Versus Stainless Steel 1.4404/316L alloy: An In Vitro Study

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Document Type : Original Article

Authors

1 faculty of dentistry/department of removable prosthodontic/Minia university

2 Department of removable prosthodontics , minia university

3 Removable prosthodontics department faculty of dentistry minya university

Abstract

Abstract:

Aim: This in vitro study evaluates the flexural strength of milled stainless steel 1.4404/316L alloy bars versus milled cobalt chromium alloy bars using a three-point bending machine.The research compares the mechanical properties of these two materials, which are commonly used in bar frameworks for overdentures, particularly for edentulous patients.

Methods: Twenty bars , split equally between cobalt chromium alloy bars (n=10 ) and stainless steel 1.4404/316L alloy bars (n=10), were fabricated and tested in a simulated clinical setting. Flexural strength was assessed through a three-point bending test.

Results: The cobalt chromium alloy bars exhibited significantly higher flexural strength (2419.71 ± 15.36 MPa) compared to stainless steel 1.4404/316L alloy (1017.29 ± 13.50 MPa), with a statistically significant difference (P < 0.0001).

Conclusion: Within the limitations of this study the cobalt chromium alloy may provide a superior flexural strength compared to stainless steel 1.4404/316L alloy.

Keywords: Cobalt Chromium, Flexural Strength, Stainless Steel.

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Main Subjects

Minia Journal of Medical Research

Articles in Press, Accepted Manuscript
Available Online from 09 February 2025

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