Background Osteonecrosis of the jaw (ONJ) has a frequent adverse effect after the administration of nitrogenous bisphosphonates, as non-nitrogenous bisphosphonates are metabolized more rapidly and would produce this effect to a lesser extent. The objective of this study is to analyze the results obtained in the literature with the use of L-PRF in the treatment of ONJ through a systematic review and meta-analysis. Material and methods: Medline (via PubMed), Cochrane, Web of Science and Grey Literature Database was screened from which 10 were selected. Results In the meta-analysis with full resolution, combining the use of L-PRF in the treatment of ONJ, a weighted proportion (PP) of 94.3% of complete resolution is obtained (95% CI: 91.2-97.4, p <0.001), with a low degree of heterogeneity, statistically significant (I2 = 29.02%; p <0.001). When analyzing the non-resolution data, a weighted proportion (PP) of 7.7% (95% CI: 3.6-11.9; p <0.001) was obtained with moderate heterogeneity (I2: 41.87%; p =0.112). In the meta-regression, no significant correlation was found between complete resolution and year of publication (intercept = 2.88, p =0.829). In consistency analysis no major changes in PP are identified when any of the studies are eliminated, demonstrating a high reliability in the combined results. Conclusion: L-PRF alone or in combination with other therapies in treatment of ONJ achieved high percentages of complete lesion resolution (94.3%). In studies where L-PRF is combined with other therapies, and where the effectiveness of the other therapy alone is analyzed, L-PRF has been shown higher percentages of resolution. Key words: L-PRF, osteonecrosis, treatment, bisphosphonates, monoclonal antibody.