In short
My rule for extracting in irradiated bone is antibiotics, atraumatic technique and primary closure — not a routine referral for prophylactic hyperbaric oxygen, which the stronger recent evidence does not support as a blanket practice. The case I would rather not do at all is a lower-jaw extraction in a smoker or a person with diabetes, with more than one tooth involved; if it has to happen, one tooth first, watched through healing, before touching the rest. These cases are not common — most extraction decisions are made well before radiation starts, at the dental-clearance visit — which is where the highest-yield judgment actually is.
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