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A comparison of methods for determining setting rate of amalgam
Author(s) -
Ohashi Masayoshi,
Ware Albert L.,
Docking Alan R.
Publication year - 1975
Publication title -
australian dental journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.701
H-Index - 71
eISSN - 1834-7819
pISSN - 0045-0421
DOI - 10.1111/j.1834-7819.1975.tb04365.x
Subject(s) - materials science , amalgam (chemistry) , mercury (programming language) , ball (mathematics) , compressive strength , recovery rate , composite material , dentistry , metallurgy , mathematics , medicine , computer science , chemistry , chromatography , mathematical analysis , electrode , programming language
A bstract — Four methods were compared for determining the setting rate of amalgams. The resultant order of preference as a standard method was compressive strength at 30 minutes after preparation of the specimen, the time to the last transverse cut on a cylindrical specimen with a “guillotine” blade and the time to non‐fracture of a ball of amalgam with a final set Gillmore needle. A mercury absorption method was unacceptable. Alloys labelled fast and standard setting could be separated and limits between fast and standard alloys have been examined for each method.