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Evaluation of Mechanical Characteristic and Biological Stability of Dental Alloys by the Manufacture Method

가공방법에 따른 치과용 합금의 기계적 특성 및 생물학적 안정성 평가

  • 김치영 (부산가톨릭대학교 보건과학대학 치기공학과) ;
  • 정인성 (부산가톨릭대학교 보건과학대학 치기공학과)
  • Received : 2011.01.12
  • Accepted : 2011.03.18
  • Published : 2011.03.28

Abstract

The material of the dental prosthesis was required bio-compatibility for biological, chemical, and physical stabilities. This study was conducted the stability evaluation of mechanical, biological characteristics through comparing Co-Cr alloy(SC group), Ti alloy(ST group) made by the selective laser melting method with Co-Cr alloy(CC group), Ni-Cr alloy(CN group) made by the casting method. Modulus of elasticity for mechanical characteristic evaluation was measured by the tensile test. And we conducted the release material analysis using lactic acid-NaCl solution for the evaluation of biological stability and were observed cytotoxicity through the content of this release medium. Taking these results into account, the Co-Cr alloy made by the selective laser melting method was observed modulus of elasticity higher than he Co-Cr alloy made by the casting method. And the Co-Cr alloy made by the selective laser melting method had more superior biological stability than the other groups as the result of cytotoxicity evaluation through the release material analysis. By this results, we think that alloys made by the selective laser melting method can be applied as materials for making the dental prosthesis.

Keywords

Bio-compatiblilty;Modulus of Elasticity;Cell Survival Rate;Release Material;Selective Laser Melting

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