@hilsy What a dilemma for your mother. Sounds as if the teeth have to come out if a whole team agrees. There's a risk of necrosis of the jaw after tooth extraction from the radiated field, depending on how much radiation that part of the jaw received and HBO is used to improve blood flow and healing. However, dentists are not so certain now that it is useful. It sounds like a quite pleasant experience for people with normal cognitive function but there's pressure on the ears and its every day for weeks so as you say it might be too much for her with dementia. You could ask them about Pentaclo which is a drug combination used to improve healing after the bone starts to play up. Trental and Vitamin E. What treatment will give your mother maximum comfort? Good luck with these difficult decisions.