I have a radical idea possibly a good idea might be to have all the teeth removed and dentures fitted before the person becomes to large to visit the dentist.It could prevent alot of pain and discomfort.
When some people are facilitated or long term stays...barbers, dentists, etc stop by based on $, coverage, location etc. In the meantime, keep the sensodyne, orajel and Rx ready just in case along with Listerine & Colgate/Crest.