Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
권호 표지

The effect of preheat treatment on ceramic to metal bond strength

도재-금속의 결합 강도에 미치는 비금속 합금의 열처리 효과

  • Kim, Chi-Young (Dept. of Dental Lab. Science, Catholic University of Pusan) ;
  • Kim, Young-Gon (Dept. of Biomedical Engineering, Inje University) ;
  • Cho, Hyun-Seol (Dept. of Biomedical Engineering, Gwang Yang health College)
  • 김치영 (부산가톨릭대학교 치기공학과) ;
  • 김영곤 (인제대학교 의용공학과) ;
  • 조현설 (광양보건대학 의료공학과)
  • Published : 2002.07.01
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Abstract

In dental prosthetics, the application of metal-ceramic restorations has steadily increased since their introduction. This is due to excellent esthetics in combination with high mechanical stability. In order to optimum bond strength between metal and ceramics, controlled oxidation of metal substructure is essential factor. Beryllium containing and beryllium free Ni-Cr alloys for metal-ceramic restorations were evaluated for the metal-ceramic bond strength by changing heat treatment for oxide formation. A mechanical three-point bending test was employed to evaluate the interfacial bond strength of metal-ceramic. In each metal, plate type specimens were used for mechanical three-point bending test. With Ni-Cr alloys for metal ceramics, mechanical three-point bending test showed that double degassing was more available preheat treatment method than another. It was found that beryllium containing Ni-Cr alloys are more effective than beryllium-free for metal-ceramic bond strength.

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