Limited evidence exists that glass ionomer restorations in permanent teeth offer a lower risk of developing carious lesions at margins compared with amalgam restorations Critical Summary Prepared by: Carlos Flores-Mir, DDS, DSc, FRCD(C); Mike John, DDS, MPH, PhD; Debora Matthews DDS, MSC 

A Critical Summary of:

Absence of carious lesions at margins of glass-ionomer and amalgam restorations: a meta- analysis

Mickenautsch S, Yengopal V, Leal SC, Oliveira LB, Bezerra AC, Bonecker M. European Journal of Paediatric Dentistry. 2009;10(1):41-6

Published Date: 3/22/2010

This summary is published in the Journal of the American Dental Association and can be accessed at :-


  • Systematic Review Conclusion:

    Carious lesions are less common at the margins of single-surface glass ionomer restorations than at the margins of amalgam restorations after restorations have been in permanent teeth for six years.

  • Critical Summary Assessment:

    The authors of a systematic review of eight studies found glass ionomer restorations to have a substantial effect in preventing secondary caries compared with amalgam restorations.

  • Evidence Quality Rating:


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