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Related Experiment Videos

Posterior amalgam restorations--usage, regulation, and longevity.

Richard J Mitchell1, Mari Koike, Toru Okabe

  • 1Division of Restorative Dentistry, Department of Oral Health Practice, College of Dentistry, University of Kentucky, D641 Medical Center, 800 Rose Street, Lexington, KY 40536-0297, USA. rjm1@uky.edu

Dental Clinics of North America
|June 26, 2007
PubMed
Summary
This summary is machine-generated.

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Dental amalgam remains a widely used restorative material globally, despite declining use in some regions. Long-term studies indicate amalgam restorations generally outperform resin composites, though both show reduced longevity in general practice.

Area of Science:

  • Dental Materials Science
  • Restorative Dentistry
  • Clinical Dentistry

Background:

  • Dental amalgam is a prevalent direct restorative material for posterior teeth worldwide, despite a global decline in its use.
  • Limited national regulations exist regarding amalgam use, with some countries placing very few amalgam restorations.
  • Understanding the longevity of dental restorative materials is crucial for clinical decision-making and patient outcomes.

Purpose of the Study:

  • To evaluate and compare the long-term longevity of dental amalgam and resin composite restorations.
  • To assess the performance of these materials under optimal conditions versus general practice settings.

Main Methods:

  • Review of long-term clinical studies comparing amalgam and resin composite restorations.

Related Experiment Videos

  • Analysis of restoration longevity data from both ideal laboratory/controlled settings and real-world general practice environments.

    • Main Results:

    • Under optimal conditions, both amalgam and resin composite posterior restorations demonstrate extended longevity compared to previous reports.
    • Amalgam restorations exhibit superior longevity compared to resin composite restorations in long-term, optimal-condition studies.
    • In general practice settings, both amalgam and resin composite restorations show reduced longevity.

    Conclusions:

    • Dental amalgam continues to be a significant restorative material, particularly for load-bearing posterior applications.
    • While amalgam shows better long-term survival rates than composite under ideal conditions, both materials face longevity challenges in routine clinical practice.
    • Further research may be needed to optimize composite materials or clinical techniques to improve their longevity in general practice.