We had one case similar to that reported by Lau, et all. The patient is a 72-year-old woman who sustained a painful fistula (Figure la) after dental implants 6 months before. She had taken alendronate weekly for 4 years. She underwent sequestrectomy of necrotic bone, oral antibiotics, and oral irrigation with aqueous iodine solution. After 5 months of therapy, the situation deteriorated (Figure lb).
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