This updated Cochrane review of the efficacy and safety of direct composite fillings versus amalgam fillings included 8 RCTs. Low‐certainty evidence suggests that composite resin restorations may have almost double the failure rate of amalgam restorations.
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This review of the longevity of complete dentures included 42 studies (22 cross-sectional ,22 cohort studies) mainly conducted in a university setting with the findings suggesting a longevity of 10.1 ±4.0 years.
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This review of post-retained crowns on endodontically treated teeth included 9 RCTs. Findings suggest that that the number of remaining coronal walls and the use of posts are key factors for the success/ survival of these restorations. However the quality of the available evidence is low.
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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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Lesley Dawson highlights a recent study that analysed how failures are defined in cartilage surgery and how survival rates may change according to different definitions.
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