Evaluation of surgical outcome and influencing risk factors in patients with medication-related osteonecrosis of the jaws

Publication date: Available online 9 August 2016
Source:Journal of Cranio-Maxillofacial Surgery
Author(s): Christoph Klingelhöffer, Florian Zeman, Johannes Meier, Torsten Eugen Reichert, Tobias Ettl
PurposeSurgical treatment of the medication-related osteonecrosis of the jaw (MRONJ) is still challenging. We examined the outcome of the resection of osteonecrotic lesions and the influence of potential risk factors on the operative success.MethodsSeventy six surgical interventions on 40 patients were evaluated in a prospective design with a mean follow-up of 55 weeks. Primary endpoints were: (i) maintenance of the mucosal closure and (ii) decrease of MRONJ stage. Influential variables included preoperative duration, location and diameter of MRONJ, duration and change of antiresorptive therapy, presence of actinomyces species.ResultsOnly in 27.6% of cases long-term maintenance of the mucosal closure was achieved. However, stage II patients decreased to stage I in 81% after surgery (p<0.01) and stage III patients improved in 83% of cases (OR=8.08; p=0.07). Stage I patients profited only in 38% by surgical intervention. MRONJ recurrence after surgery was associated with extended preoperative MRONJ duration (p=0.015). There was no significance of further influential variables, but MRONJ of the upper jaw seems prognostically more favorable.ConclusionAdvanced stages of MRONJ benefit from surgical treatment, whereas stage I diseases may also be treated conservatively. An early intervention reduces the risk of recurrence.



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