Abstract
Objective: To evaluate the efficacy of preformed metal crowns (PMC) compared with amalgam restorations in primary molars.
Data sources: Medline (1972–2000) and reference lists.
Study selection: Studies were included if they had clinical comparisons of longevity or success rate of PMC versus amalgam with data available to compare treatment outcomes.
Data extraction and synthesis: Study treatment outcomes comparing successful and failed restorations were tabulated and odds ratios calculated. False failures were excluded where possible.
Results: A total of 35 articles were identified of which 10 fulfilled the entry criteria. All but two were retrospective studies. The pooled odds ratio of 0.23 [95% confidence interval (CI), 0.190.28] favoured treatment with PMC.
Conclusions: Available evidence suggests more favourable outcomes with PMC than amalgam restorations in primary molars. However, as the majority of studies included were retrospective there is an increased risk of bias.
Randall RC, VriJhoef MMA, Wilson NHF. Efficacy of preformed metal crowns vs amalgam restorations in primary molars: a systematic review. JADA 2000; 131:337–343
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Address for reprints: Dr RC Randall, 3M Dental Laboratories, 3MSant3/4 France, Boulevard de l'Oise, 95029 Cergy Pontoise Cedex, France.
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Ismail, A., Sohn, W. Evidence suggests more favourable outcomes with preformed metal crowns than amalgam restorations in primary molars. Evid Based Dent 3, 10 (2002). https://doi.org/10.1038/sj.ebd.6400084
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DOI: https://doi.org/10.1038/sj.ebd.6400084
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Evidence-Based Dentistry (2002)