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[Experiences with gamma-2-free amalgam].

R Hübner1, W Binus

  • 1Sektion Stomatologie des Bereichs Medizin der Martin-Luther-Universität Halle-Wittenberg.

Deutsche Stomatologie (Berlin, Germany : 1990)
|November 1, 1990
PubMed
Summary
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Dental amalgam alloys containing less Gamma-2 phase, such as Germadent and Duragam, demonstrated superior clinical performance compared to traditional Gamma-2 containing Dentargam. Reduced Gamma-2 phases improve amalgam durability and clinical outcomes.

Area of Science:

  • Dental Materials Science
  • Clinical Dentistry
  • Materials Engineering

Background:

  • Dental amalgam alloys are widely used restorative materials.
  • The Gamma-2 phase in amalgam is known to be susceptible to corrosion.
  • Minimizing or eliminating the Gamma-2 phase is a target for improving amalgam longevity.

Purpose of the Study:

  • To clinically evaluate and compare the intraoral performance of three different dental amalgam alloys.
  • To assess the clinical superiority of amalgams with reduced or absent Gamma-2 phases.

Main Methods:

  • Intraoral clinical examination comparing paired teeth.
  • Testing of three amalgam types: Dentargam (Gamma-2 containing), Germadent (Gamma-2 reduced), and Duragam (Gamma-2 free).

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Main Results:

  • A clear superiority in clinical performance was observed for the Gamma-2-reduced and Gamma-2-free amalgam alloys.
  • Germadent and Duragam showed better clinical outcomes than Dentargam.

Conclusions:

  • Dental amalgams with reduced or eliminated Gamma-2 phases exhibit superior clinical performance.
  • Alloy composition, specifically Gamma-2 phase content, significantly impacts the clinical success of dental amalgams.