Occurrence and risk indicators of medication‐related osteonecrosis of the jaw after dental extraction: a systematic review and meta‐analysis

Abstract Aims The primary objective was to assess the occurrence rate of Medication‐Related OsteoNecrosis of the Jaw ( MRONJ ) after dental extraction in patients treated with Antiresorptive Drugs ( ARD ) for OsteoPorosis ( OP ) or for oncological reasons. The secondary objective was to compare the extraction techniques regarding the occurrence of MRONJ . Materials and Methods A systematic search in PubMed/ MEDLINE , EMBASE and LILACS databases was performed. Prospective studies considering human patients treated with ARD and providing information regarding the occurrence of MRONJ after dental extraction were selected. Meta‐analysis for incidence of MRONJ at the patient level was performed. The effect of administration route and surgical technique on MRONJ was evaluated. Results The risk of MRONJ after dental extraction was significantly higher in patients treated with ARD for oncological reasons (3.2%) than in those treated with per os ARD for OP (0.15%) ( p < 0.0001). Dental extraction performed with adjusted extraction protocols decreased significantly MRONJ development. Potential risk indicators such as concomitant medications and pre‐existing osteomyelitis were identified. Conclusion The risk of MRONJ after dental extraction in patients treated with ARD exists, especially in patients treated for oncologic reasons. This risk tends to decrease with adjusted extraction protocols.