The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)
- Volume 37 Issue 6
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- Pages.730-740
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- 1999
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- 0301-2875(pISSN)
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- 2005-3789(eISSN)
A STUDY FOR SETTING AND THERMAL EXPANSION OF DENIAL SOLDERING INVESTMENTS
납착용 매몰재의 경화팽창과 열팽창에 관한 연구
- Shin, Sung-Ae (Department of Prosthodontics, College of Dentistry, Pusan National University) ;
- Lim, Jang-Seop (Department of Prosthodontics, College of Dentistry, Pusan National University) ;
- Jeong, Chang-Mo (Department of Prosthodontics, College of Dentistry, Pusan National University) ;
- Jeon, Young-Chan (Department of Prosthodontics, College of Dentistry, Pusan National University)
- 신성애 (부산대학교 치과대학 치과보철학교실) ;
- 임장섭 (부산대학교 치과대학 치과보철학교실) ;
- 정창모 (부산대학교 치과대학 치과보철학교실) ;
- 전영찬 (부산대학교 치과대학 치과보철학교실)
- Published : 1999.12.01
Abstract
The purpose of this study was to investigate setting and thermal expansion of dental soldering investments. In order to compare expansion rates and to investigate the effect of water/powder ratio on expansion, setting and thermal expansion of low dental soldering investments were measured under three different water/powder ratio conditions. standard, 20% decreased and 20% increased. Setting expansion of investments was measured by use of dialgauge method. Each measurement was started two minutes later from the beginning of spatulation and recorded every one minute for one hour. Thermal expansion of cylindrical test specimens, 10mm diameter, 50mm length, was recorded in a thermodilatometer at heating rate of
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