Restorative Dentistry and Endodontics
- Volume 5 Issue 1
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- Pages.29-34
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- 1979
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- 2234-7658(pISSN)
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- 2234-7666(eISSN)
AN EXPERIMENTAL STUDY ON COEFFICIENT OF THERMAL EXPANSION OF DENTAL INVESTMENTS
수종치과매몰재(數種齒科埋沒材)의 열팽창계수(熱膨脹係數)에 관(關)한 실험적(實驗的) 연구(硏究)
- Lee, Myung-Jong (Dept. of Operative Dentistry, College of Dentistry, Seoul National University)
- 이명종 (서울대학교 치과대학 보존학교실)
- Published : 1979.12.31
Abstract
The purpose of this study was to measure thermal expansions of dental investments, Biovest(Casting Investment. Dentsply International INC, U.S.A.), Multi-Best (Use for all dental chrome-cobalt alloys, The Ransom & Randolph Co. U.S.A.), Kerr(Inlay Investment. Sybron Kerr, U.S.A.), O. K. (Inlay Investment. Shofu Dental MFG, Co. Japan), Whip-Mix (Cristobalite Inlay Investment. Whip-Mix Corporation. U.S.A.). Thermal expansion of specimens(5mm in diameter and 50mm in length) was measured by a dilatometer at the temperature range from
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