Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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COMPARISON OF THE PHYSICAL PROPERTIES BETWEEN GALLIUM ALLOY AND HIGH COPPER AMALGAM ALLOYS

갈륨합금과 고동 아말감 합금의 물리적 성질 비교

  • Kim, Hyeon-Cheol (Dept. of Conservative Dentistry, College of Dentistry, Pusan Notional University) ;
  • Lee, Hee-Joo (Dept. of Conservative Dentistry, College of Dentistry, Pusan Notional University) ;
  • Hur, Bock (Dept. of Conservative Dentistry, College of Dentistry, Pusan Notional University)
  • 김현철 (부산대학교 치과대학 치과보존학교실) ;
  • 이희주 (부산대학교 치과대학 치과보존학교실) ;
  • 허복 (부산대학교 치과대학 치과보존학교실)
  • Published : 1998.04.07
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Abstract

The purpose of this study was to compare the physical properties between high copper amalgam and gallium restorative material. In this study, the specimens for the 4 experimatal groups (Valiant, Valiant PhD, Gallium Alloy GF II. Gallium Alloy GF II triturated with some addition of alcohol) were prepared in the manner of which stated in ADA specification No.1 for amalgam alloy. And then, measured and compared the value of compressive strength. creep, and dimensional change during hardening of each sample. The results were as follows: 1. In the compressive strength, the Valiant-lathe cut type high copper amalgam-had the highest value of strength(p<0.05), and the Valiant PhD-admixed type high copper amalgam-showed the higher value of strength than the Gallium Alloy GF II(p<0.05) but had no significant difference with Gallium Alloy GF II triturated with some addition of alcohol(p>0.05). 2. In the creep. the Valiant PhD showed the highest value of creep (p<0.05), but there was no significant difference between Gallium Alloy GF II and Valiant(p>0.05). 3. In the dimensional change during hardening, no two groups were significantly different at the 0.050 level. 4. There was no significant difference between Gallium Alloy GF II and the same material which was triturated with some addition of alcohol(p>0.05).

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