잠시만 기다려 주세요. 로딩중입니다.

經時變化에 따르는 齒科用Amalgam 合金의 强度硏究

Studies on the Compressive Strength of Dental Amalgam as Related to Time

대한치과기재학회지 1967년 2권 2호 p.11 ~ 13
김철위,
소속 상세정보
김철위 (  ) - 서울대학교 치과대학 치과재료학교실

Abstract


The purpose of this study was to determine the compressive strength at various time intervals ranging from one hour after condensation to seven days. Three alloys were used, including RTL, Spherical, and Pellet amalgam alloys. The recommended mercury-alloy ratio, was followed for each alloy and a constant size mix was used throughout, and packed by the Amsler Spring Tester with condensation pressure 98.8kg/cm2.
A total of 108 different amalgam test specimens prepared under this condensation pressure were tested for their compressive strength at various time intervals. A Amsler Universal Testing, Machine was used for determining the compressive strength, the load being applied at the rate . of imm/min. ,
From the experiments, the following results were obtained.
1. Comparing with the Pellet amalgam, the RTL and Spherical amalgams have a greater degree"´´ of compressive strength in the initial phase.
2. It was found that the RTL amalgam specimen reached at approximately its maximum strength by the end of the 68 hours.

키워드

원문 및 링크아웃 정보

 

등재저널 정보

KCI