If there is an infection after Bone Grafting for a dental implant, does the grafting material need to get removed? (photo)

I had an infected tooth extracted last week. I was on amoxicillin for a week and went back to the dentist with swelling and pain. There is an infection. He did not re-open the area or clean it or remove the bone graft. He just prescribed a course of clindamycin for another week. Is that sufficient?

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