Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
권호 표지

Sprue design and its effect on the castability of ceramonetal nonprecious alloys

주입선의 설치방법이 금속의 주조성에 미치는 영향에 관한 실험적 연구

  • Kim, Uoong-Chul (Dept. of Dental Laboratory Technology, Junior College of Public Health and Medical Technology, Korea University)
  • 김웅철 (고려보건전문대학 치기공과)
  • Published : 1988.07.01
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Abstract

The purpose of this study was to evaluate the effect of spure designs and air vent on the relative castability of the nonprecious alloys, commonly used to make ceamometal restorations. Samples of total 30 were constructed and devided into 6 groups according to two variables, sprue design and air bent. The total number of completly cast squares was counted, verified, and recorded. The results obtained were as follows: 1. The runner bar or Rousseau designs yield better castability than reservoir design(P<0.1) 2. When the air vent was attached, only the castability of reservoir design was significantly different from runner bar or Rousseau designs.

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