The Journal of the Korea Contents Association (한국콘텐츠학회논문지)

The Korea Contents Association (한국콘텐츠학회)
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Shear Bond Strength and Interfacial Characterization of Ceramic to Beryllium Free Nonprecious Alloys for Porcelain Fused to Metal Crown

베릴륨이 포함되지 않은 도재용착용 비귀금속 합금과 세라믹간의 전단결합강도와 계면특성

  • 정인성 (부산가톨릭대학교 보건과학대학 치기공학과) ;
  • 김치영 (부산가톨릭대학교 보건과학대학 치기공학과)
  • Received : 2010.09.28
  • Accepted : 2010.11.25
  • Published : 2010.11.28
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Abstract

Ni-Cr and Co-Cr alloy uncontained Be element for using as dental porcelain alloy were analyzed the mechanical properties through bonding strength and fracture test after the bonding with porcelain. The bonding strengths between alloy and ceramic were measured through the shear bond strength test. Consequently, the T-3 group contained Be element that had shear strength of 41.13(${\pm}5.11$)MPa was showed the highest shear strength than the other groups. The second highest group was a verabond contained Be element that had shear strength of 40.72(${\pm}5.98$)MPa. The results of the other groups according to the shear strength were Wirobond(38.40(${\pm}9.66$)MPa) belonged to Co-Cr alloy, and Verabond 2V(32.77(${\pm}4.31$)MPa), Bellabond N(28.63(${\pm}6.39$)MPa), Bellabond plus(24.97(${\pm}6.13$)MPa), Argeloy N.P. Star(22.69(${\pm}3.41$)MPa) uncontained Be element, respectively. The morphological aspects of the fracture surface between alloys and ceramic were observed that all groups were caused mixed failure as conformation attached ceramic fragments to metallic surface by fracture process.

치과도재용 합금으로 사용되는 합금 중 베릴륨이 함유된 비귀금속 Ni-Cr합금과 베릴륨이 함유되지 않은 비귀금속 Ni-Cr합금 그리고 베릴륨이 함유되지 않은 비귀금속 Co-Cr 합금과 세라믹간의 결합강도와 파절양상 그리고 계면특성을 분석하고자 하였다. 결합강도는 만능시험기를 이용하여 전단력시험을 통하여 전단결합력을 측정하였으며, 전단시험에 의한 파단면을 이용하여 파절양상을 관찰하였다. 그리고 합금-도재간의 계면을 관찰하였다. 전단결합강도 측정 결과, 베릴륨이 포함된 T-3가 41.13(${\pm}5.11$)MPa로 가장 높게 나타났으며, 베릴륨이 포함된 VeraBond(40.72(${\pm}5.98$)MPa), Co-Cr 합금인 Wirobond(38.40(${\pm}9.66$)MPa), 베릴륨이 포함되지 않은 Verabond 2V(32.77(${\pm}4.31$)MPa), Bellabond N(28.63(${\pm}6.39$)MPa), Bellabond plus(24.97(${\pm}6.13$)MPa), Argeloy N.P. Star(22.69(${\pm}3.41$)MPa) 순으로 나타났다. 비귀금속 합금들과 세라믹간의 파절양상은 모든 시편에서 금속표면에 세라믹이 일부 부착된 복합파절(mixed failure) 양상을 보였다.

Keywords

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