Secondary caries: limited evidence from in-situ studies

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Nine small in-situ studies were included in this review of the impact of restoration type on secondary caries providing insufficient evidence to make any firm conclusions.

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Amalgam has lower failure rate than composite in restorations

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8 studies were included in this review comparing amalgam with composite in posterior restorations. There was a statistically significant benefit in favour of amalgam for both restoration failure and secondary caries.

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