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[Mercury release from amalgam specimens].

U Fritz1, M Zellmann

  • 1Klinik und Poliklinik für Zahn-, Mund- und Kieferheilkunde der Universität zu Köln.

Deutsche Zahnarztliche Zeitschrift
|August 1, 1991
PubMed
Summary
This summary is machine-generated.

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The presence of thiocyanate (KSCN) in saliva significantly reduces mercury release from dental amalgam. This finding is crucial for understanding amalgam corrosion and patient safety.

Area of Science:

  • Dental Materials Science
  • Corrosion Science
  • Analytical Chemistry

Context:

  • Dental amalgam, a common restorative material, can release mercury over time.
  • Understanding the factors influencing mercury release is vital for patient health.
  • Saliva contains various ions, including thiocyanate (KSCN), which may affect amalgam behavior.

Purpose:

  • To investigate the effect of thiocyanate (KSCN) on mercury release from gamma 2-free dental amalgams.
  • To quantify mercury release in the presence and absence of KSCN in a simulated oral environment.
  • To determine if KSCN inhibits or promotes amalgam corrosion.

Summary:

  • Specimens of gamma 2-free dental amalgam were stored for 7 days in lactic acid-salt solutions with and without KSCN.

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  • Mercury content in the solutions was measured using inductively coupled plasma atom emission spectroscopy at 1, 4, and 7 days.
  • Mercury release was significantly lower (45.4 µg/50 mm²) in KSCN-containing solution compared to KSCN-free solution (70.7 µg/50 mm²).

    • Impact:

    • Thiocyanate (KSCN), a component of natural saliva, demonstrates a corrosion-inhibiting effect on dental amalgam.
    • This study provides quantitative data on mercury release, informing the development of more stable dental materials.
    • Findings contribute to a better understanding of the long-term behavior of dental amalgams in the oral environment.