Amalgam outperforms composite in range of posterior cavity types

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This review of failure rate of single-unit prostheses versus direct restorations in vital posterior teeth included 14 studies (5 RCTs) finding that composite had a significantly higher failure rate than amalgams, regardless of the remaining tooth structure. For teeth with fewer than 2 remaining walls, direct restorations presented significantly higher failure rates than crowns .

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Preformed paediatric crowns: little evidence for aesthetic crowns

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Only 7 small studies at high risk of bias were available for this review of preformed paediatric aesthetic crowns. They provide little evidence on which to r change of practice particular for posterior teeth where the use of stainless steel crowns is recommended.

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All-ceramic crowns: failure rates higher in posterior teeth

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This review of the failure rates of all-ceramic crowns included 14 (9 prospective, 5 retrospective) studies. Using a broad definition of failure there was little difference between rates in anterior and posterior crowns.

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Endocrown restorations – little evidence to support this approach

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This review of endocrown restorations identified 8 studies only 3 of which were clinical. These 3 clinical studies were very small and two of them were retrospective providing very low quality evidence to support their effectiveness.

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Gingival retraction: cord or cordless systems?

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This review of corded vs. cordless gingival retraction systems included 7 trials. Both may have a role with corded systems being suggested when there is a greater need for gingival displacement.

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Root filled teeth: crown or fill? The evidence is limited

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This update of a 2012 Cochrane review of the effectiveness of crowns or conventional fillings for root filled teeth found insufficient evidence to assess the effectiveness of either approach.

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Amelogenesis imperfecta: study suggests good outcomes from crown therapy

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This small trial found no difference between either Procera or IPS e.max Press crown in amelogenesis imperfecta patients in the short term. The survival rate at 2 years was 97% with only 3% of teeth suffering with endodontic complications.

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Porcelain-fused-to-metal crowns or all-ceramic crowns?

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This rapid review from the Canadian Agency for Drugs and Technologies in Health (CADTH) identified 29 studies including 10 systematic reviews. The findings suggest a lower long term survival rate for ceramic crowns (48%) compared with porcelain fused to metal crowns (62%).

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Crowns improved survival of root treated teeth suggests review

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This technology review looked at the effectiveness of crowns on root treated teeth. 3 systematic reviews and 4 non-randomised studies were included. They found that the short term survival with crowns or direct fillings is comparable but long term root canal treated teeth may have better survival.

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Intentionally replanted teeth: a possible treatment option?

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This review found a significantly higher mean survival for implant supported crowns (97%) compared with Intentionally replanted (IR) teeth (88%). Evidence for IR teeth was limited, being heterogeneous, old and potential suffering from publication bias.

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