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Introduction: Medication‐related osteonecrosis of the jaw (MRONJ) is uncommon but can result in severe destruction of the jaw. This case–control study investigated the therapeutic effects of daily or weekly administration of teriparatide in the management of MRONJ using a cohort for osteonecrosis of the jaw. Methods: Patients who were diagnosed with MRONJ and consented to teriparatide administration were assigned either to a group of daily injection or of weekly injection and completed a 4‐week course of injection preoperatively and at least an 8‐week course postoperatively. The control group received either the intraoperative rhBMP treatment (CG_BMP) or no additional perioperative treatment (CG_noBMP). The state of MRONJ was evaluated 2 months (T1) and 6 months (T2) postoperatively for all participants. Results: Either group of daily injection (8.35 weeks ± 1.58; n = 17) or weekly injection (9.17 ± 3.79; n = 12) showed significantly faster healing than those of CG_BMP (14.40 ± 6.08; n = 25) or CG_noBMP (15.79 ± 9.79; n = 39). MRONJ was resolved completely in 24 out of 29 participants who completed the course of teriparatide injections, whereas 46.9% of CG showed delayed resolution. Multiple regression analysis indicated 7.50 times (95% CI, 1.77–31.82) more likelihood of complete resolution of MRONJ for participants with teriparatide injections. Conclusion: A course of daily or weekly administration of teriparatide injections may improve treatment outcomes for patients with MRONJ. [ABSTRACT FROM AUTHOR]