Abstract
The effect of bevacizumab-related osteonecrosis of the jaw on previously osseointegrated dental implants has not been adequately studied. Here, we report a case of osteonecrosis of the jaw detected around dental implants placed before bevacizumab therapy. A 66-year-old woman undergoing bevacizumab therapy for metastatic triple-negative breast cancer developed malocclusion after buccal gingival swelling and pain in the #18, #19, and #20 tooth region. The patient visited a local dental clinic, where existing implants in relation to #19 and #20 were removed. Subsequently, the patient visited our department, and intraoral examination revealed necrotic bone in the region corresponding to #19 and #20. Radiographic examination showed a pathologic fracture in this region that was considered to result from osteonecrosis of the jaw. Bevacizumab therapy was suspended temporarily until the acute inflammation had subsided. In addition, treatment with antibacterial agents and conservative surgery was considered. Complete soft tissue coverage was observed 14 days after surgery. In recent years, the number of patients receiving bevacizumab treatment has increased. Because bevacizumab-related osteonecrosis of the jaw could occur around previously osseointegrated dental implants as well, this case report suggests an effective treatment regimen based on a combination of antibacterial agents and conservative surgery.
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