A Study on the Castability of Investing Method and Casting Direction of Chrome-Cobalt Alloy Widely Used in Production of Patial Denture Framework

국부의치 제작에 사용되는 Chrome Cobalt Alloy 주조 시 매몰방법과 주조방향이 주조성에 미치는 영향에 관한 연구

  • Chung, Kyung-Pung (Dept. of Dental Laboratory Technology Won Kwang Health Science College) ;
  • Choi, Un-Jae (Dept. of Dental Laboratory Technology Won Kwang Health Science College)
  • 정경풍 (원광보건대학 치기공과) ;
  • 최운재 (원광보건대학 치기공과)
  • Published : 1999.07.01

Abstract

When producing partial denture using a Chrome-cobalt alloy being used universally, 45 pattern of them to compare casting characters according to 5 burying methods(special ring method, plastic ring method, general metal ring method) and 5 casting directions(straight, upper, lower, left and right directions) were compared and evaluated. The results were as follows : 1. The comparison of casting characters in accordance with burying type shows that the special ring method to install blind air vent using utility wax was the highest rate of 76.9%, followed by 69.1% of the plastic ring to cast without ring and 61.1% of the metal ring method being used universally respectively. Namely the special ring method was best. The significant level was P<0.05 statistically. 2. The comparison of casting character in accordance with casting directions shows that the straight casting was the highest of 77.9%, and followed by right casting of 74.2%, left casting of 66.7%, upper casting of 63.5%, and lower casting of 62.9% respectively, Namely the straight casting was best.

Keywords