Comparison of Mechanical Properties of Milled and Casted Cobalt-Chromium Alloys Using Three-point Bending Test

Joon-Ki Hong; Seong-Kyun Kim; Seong-Joo Heo; Jai-Young Koak; Jin-Soo Ahn

doi:10.32542/implantology.2019013

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2019 Vol.23, Issue 3 Preview Page Next Page

Original Article

Comparison of Mechanical Properties of Milled and Casted Cobalt-Chromium Alloys Using Three-point Bending Test 밀링 방법과 주조 방법으로 제작한 코발트-크롬 합금의 3점 굽힘 시험을 통한 기계적인 특성 비교

30 September 2019. pp. 162-168

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Abstract

Purpose: The objective of this study was to investigate the mechanical properties of Cobalt-Chromium (Co-Cr) alloys made by conventional casting method and Computer-Aided Design/Computer –Aided Manufacturing (CAD-CAM) milling method.Material and Methods: Co-Cr alloy specimens (n=8) were made by casting and milling methods. The size of the specimens was 34 mm × 13 mm × 1.5 mm, according to ISO 22674: 2016. Three-point bending test was conducted by universal testing machine, stress and strain values were obtained. Statistical significance was tested using the t-test. Results: Flexural strength of the milled sample was significantly lower than of casted (p < 0.05). Similarly, 0.2% yield strength of milled sample was also lower than of casted (p < 0.05).Conclusion: Although there is a significant difference in mechanical properties of milled and casted Co-Cr alloy, they are both are clinically acceptable.

Keywords

CAD/CAM

Co-Cr alloy

Mechanical properties

Milling metal

Three-point bending test

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Information

Publisher :The Korean Academy of Oral & Maxillofacial Implantology
Publisher(Ko) :대한구강악안면임플란트학회
Journal Title :Implantology
Journal Title(Ko) :대한구강악안면임플란트학회지
Volume : 23
No :3
Pages :162-168
Received Date : 2019-09-11
Accepted Date : 2019-09-30
DOI :https://doi.org/10.32542/implantology.2019013

Journal of implantology and applied sciences ISSN:2765-7833(Print) 2765-7841(Online) 대한구강악안면임플란트학회지

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