This review comparing immediate implant placement using flap or flapless surgery included 5 small RCTs involving a total of 140 patients. The findings suggested a benefit for flapless srugery but in addition to being small the studies were short term and 3 of the 5 studies were considered to be at high risk of bias.
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This review of the efficacy of different bone reconstructive therapies for peri-implantitis compared to access flap surgery at 12 months or longer. included 18 studies with 12 RCTs contributing to the meta-analyses. The findings suggest that compared with access flap surgery reconstructive surgery does not offer significant improvements at 12 months but the evidence is of low certainty.
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This review to assess if surgical crown lengthening produces stable clinical outcomes only identified 5 small trials all at high risk of bias
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This review of surgical regenerative treatment for peri-implantitis included 18 studies only 3 of which were RCTs. While a benefit is suggested the quality of the available studies is limited.
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This review included 11 small low quality studies that suggest clinical benefits at 6 months. Further high quality longer term studies are needed to assess the clinical relevance.
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