The effect of trituration time on the mechanical properties of four high-copper amalgam alloys

D. F. Murchison, E. S. Duke, B. K. Norling, T. Okabe

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Several manipulative variables have been shown to influence the physical properties of dental amalgam. Variation in trituration time has been reported to affect creep, compressive strength, and diametral tensile strength in various amalgams. Recent classification of amalgam alloys by particle microstructure reveals four categories: single-composition lathe-cut; single-composition spherical; lathe-cut and eutectic admixture; and lathe-cut and single-composition spherical admixture. The effect of variation of trituration times has not been studied for these newer high-copper alloys. A representative from each classification was selected and physical properties tested, with varied times for trituration utilized. Results showed little compromise in laboratory values for the properties tested. Additional laboratory and clinical trials are warranted, but this study supports the premise that clinicians may vary trituration time to improve handling characteristics without significantly affecting mechanical properties.

Original languageEnglish (US)
Pages (from-to)74-76
Number of pages3
JournalDental Materials
Issue number2
StatePublished - Mar 1989

ASJC Scopus subject areas

  • Materials Science(all)
  • Dentistry(all)
  • Mechanics of Materials


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