Publication: Early compressive strength and phase-formation of dental amalgam
Issued Date
1995-01-01
Resource Type
ISSN
18811361
02874547
02874547
Other identifier(s)
2-s2.0-0029421833
Rights
Mahidol University
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SCOPUS
Bibliographic Citation
dental materials journal. Vol.14, No.2 (1995), 143-151276
Suggested Citation
Shinichi Goto, Hideo Ogura Early compressive strength and phase-formation of dental amalgam. dental materials journal. Vol.14, No.2 (1995), 143-151276. doi:10.4012/dmj.14.143 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/17277
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Title
Early compressive strength and phase-formation of dental amalgam
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Abstract
The compressive strength of five different amalgams was measured at one hour, six hours, 24 hours, and seven days, and X-ray diffraction analysis was carried out for each amalgam at the same times in order to investigate the early strength characteristics of the amalgams in relation to the formation of different phases. At 24 hours all tested amalgams reached about 90% or more of their seven-day compressive strength, but the increase in the early compressive strength from one hour to 24 hours varied between different amalgams. Two of the five amalgams tested reached about 90% of their seven-day compressive strength at six hours. A significant correlation was found between the ratio of early compressive strength to seven-day compressive strength, and the X-ray diffraction intensity ratio (ratios of one-, six- and 24-hour intensity to seven-day intensity) for the γ1 phase, indicating that the increases in early compressive strength are mainly dependent upon the formation of γ1. © 1995, The Japanese Society for Dental Materials and Devices. All rights reserved.