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The systematic review and meta-analysis aimed to evaluate the efficacy of Metformin (MF) with Platelet Rich Fibrin (PRF) over PRF alone in the treatment of periodontal osseous defects. An extensive electronic search for articles published up to September 2021 was conducted on ‘Embase’, ‘PubMed’ and other library databases accompanied with manual searching. Randomized controlled trials (RCTs), comparing MF plus PRF Vs PRF alone in periodontal osseous defects were identified in which periodontal pocket depth (PPD), Clinical attachment level (CAL) and Intrabony defect depth (IBD Depth) were the outcome measures. Four studies compared MF plus PRF vs .PRF alone in periodontal osseous defects. Meta-analysis was carried out for PPD reduction, CAL gain and IBD Depth changes. A standardized mean difference (SMD) of 1.86 for PPD reduction, 1.95 for CAL gain and 1.31 for IBD Depth reduction in all the studies was observed and the findings were statistically significant favouring test group. The systematic review indicates supplemental benefits of combination therapy of MF + PRF over monotherapy in resolving periodontal osseous defects. In our quest to achieve maximum regeneration in periodontal osseous defects, combination therapies such as MF + PRF have reported to be better treatment choices over other modalities.

Efficacy of platelet rich fibrin with and without metformin in the treatment of periodontal osseous defects: a systematic review and meta-analysis