Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Observation of the Castability and Bonding Strength of a Co-Cr alloy for Porcelain Fused to Metal Crown

도재용착주조관용 Co-Cr합금의 주조성 및 결합강도 관찰

  • 정인성 (부산가톨릭대학교 보건과학대학 치기공학과) ;
  • 김치영 (부산가톨릭대학교 보건과학대학 치기공학과) ;
  • 김갑진 (부산가톨릭대학교 보건과학대학 치기공학과)
  • Received : 2013.04.18
  • Accepted : 2013.06.24
  • Published : 2013.07.01
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Abstract

Purpose: This study was to analyze the castability, surface oxide characteristic of Co-Cr alloy for porcelain fused to metal crown and the bonding strength of porcelain fused to metal crown. Co-Cr and Ni-Cr alloy for porcelain fused to metal crown was used for tests of the castability and surface oxide state and shear bonding strength by various porcelain. The aim of this study was to suggest the differences of result according to Co-Cr and Ni-Cr alloy. Methods: The kinds of alloy as test specimen was Co-Cr and Ni-Cr alloy. The castability index on the alloy specimens. The surfaces of two alloys were analyzed by SEM and EDX in order to observe oxide characteristic. And the shear test was performed by MTS. Results: The castability index of Co-Cr alloy was 96.8% and Ni-Cr alloy was 94.4%. The strongest bonding strength of Co-Cr alloy was shown 67.37 MPa. Conclusion: The shear bonding strength between Co-Cr alloy and EX3 porcelain was the strongest comparing with others. And all of each alloy was indicated as same level about the castability.

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References

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