Background We investigated the efficacy of hyperbaric oxygen (HBO), low‐intensity laser (LIL), and platelet‐rich plasma (PRP) in the management of medication‐related osteonecrosis of the jaws (MRONJ). Methods A literature search was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta‐Analyses statement. Two examiners independently assessed eligibility and risk of bias and extracted data. Results There was improvement in 75.6% of the 41 patients submitted to HBO, with positive effects on pain relief and decreased size and number of lesions at a faster rate, with better effects when the drug was discontinued. For LIL, 158 (64.2%) of the 246 patients/sites improved the symptoms and 98 (39.8%) healed completely. Fourteen (17.3%) of the 81 patients treated with PRP significantly improved the symptoms and 65 (80.2%) completely healed. Conclusions These therapies served as safe and effective adjuvant modalities for MRONJ treatment. The lack of randomized clinical trials evidences the need for more high‐quality investigations on the subject.