Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
권호 표지

Study on the Casting Ability of Ni-Cr Alloys for Crown and Bridge

관교의치용 Ni-Cr 합금의 주조성에 관한 연구

  • Lee, In-Kyu (Dept. of Dental Technology, WonKwang Public Health Junior College) ;
  • Kim, Yun-Su (Dept. of Dental Technology, WonKwang Public Health Junior College)
  • 이인규 (원광보건 전문대학 치기공과) ;
  • 김연수 (원광보건 전문대학 치기공과)
  • Published : 1988.07.01
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Abstract

The purpose of this study is to evaluate the castability of Ni-Cr alloys for crown and bridge. New young, Hi-Crown and CB-80 which are widely used in dental laboratory were chosen, casting and increased the temperature of furnace 100$^{\circ}C$ of each 7 grades from 600$^{\circ}C$ to 1200$^{\circ}C$. The results are as follows : 1. CB-80 is the most prominent castability among the three Ni-Cr alloys which are Hi-Crown, New-young and Hi-Cr. 2. The good burning temperatures of casting for CB-8p are 900$^{\circ}C$, 100$^{\circ}C$ and 1100$^{\circ}C$ which are obtained four complate casting body of five former patterns. 3. The most proper burning temperature for three Ni-Cr alloys is 900$^{\circ}C$.

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