Restorative Dentistry and Endodontics
- Volume 8 Issue 1
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- Pages.89-96
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- 1982
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- 2234-7658(pISSN)
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- 2234-7666(eISSN)
AN EXPERIMENTAL STUDY ON THE MICROHARDNESS OF DENTAL AMALGAMS
치과용 아말감의 미세경도에 관한 실험적연구
- Shin, Dong-Hoon (Dept, of Operative Dentistry, Graduate School, Seoul National University)
- 신동훈 (서울대학교 대학원 치의학과 보존학)
- Published : 1982.12.31
Abstract
The purpose of this study is to identify the phases of four different types, low-copper lathe cut (Type II, class 1) and spherical (Type II, class 2) amalgam alloys which are made by Caulk company and high copper Dispersalloy (Type II, class 3) made by Johnson & Johnson and Tytin (Type I, class 2) made by S.S. White and to determine the Vickers hardness number on the individual phase and four different types of dental amalgam. After each amalgam alloy and Hg measured exactly by the balance was triturated by the mechanical amalgamator (De Trey), the triturated mass was inserted into the cylindrical metal mold which was 4 mm in diameter and 12mm in height and was pressed by the Instron Universal Testing machine (Model 1125) at the speed of 1mm/minute with 143
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