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Related Experiment Videos

Longevity of posterior restorations.

I A Mjör1, A Jokstad, V Qvist

  • 1NIOM Scandinavian Institute of Dental Materials, Haslum, Norway.

International Dental Journal
|February 1, 1990
PubMed
Summary

Restorative dentistry success depends on materials, skill, and hygiene, measured by restoration longevity. Amalgam restorations often last 8-10 years, while gold lasts longer, and composites shorter.

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Area of Science:

  • Restorative Dentistry
  • Dental Materials Science
  • Clinical Dentistry

Background:

  • Restorative dentistry success relies on material quality, operator skill, and patient oral hygiene.
  • Restoration longevity is a key metric for evaluating the overall efficacy of dental treatments.
  • Existing studies on restoration longevity face challenges due to inconsistent criteria for placement and replacement.

Purpose of the Study:

  • To review and synthesize existing data on the longevity of various dental restorative materials.
  • To provide evidence-based recommendations for material selection in operative dentistry.
  • To highlight the importance of considering restoration lifespan in treatment cost-benefit analyses.

Main Methods:

  • Systematic review of existing literature on dental restoration longevity.
  • Analysis of studies focusing on restoration survival rates and failure times.
  • Comparison of longevity data across different restorative materials, including amalgam, cast gold, composite, and glass ionomer cements.

Main Results:

  • Amalgam restorations are the most frequently studied, with approximately 50% exceeding 8-10 years.
  • Cast gold restorations demonstrate longer lifespans compared to amalgam.
  • Multisurfaced composite restorations have a shorter lifespan, and glass ionomer cements are unsuitable for large posterior restorations due to physical property limitations.

Conclusions:

  • Longevity data should guide the selection of materials and techniques in conservative dentistry.
  • Treatment cost should be evaluated based on expected tooth lifetime, not just immediate restoration expenses.
  • Standardized criteria for restoration placement and replacement are needed to improve study reliability.

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