I can relate. With Medicare here you do not get any dental treatment, related surgery, dentures, so the cost of such is on the patient. Luckily, my latest treatment center, who weren't involved with my initial dental care, provided compassionate care, but I had to wait about 2 years for any extractions due to persistent cancer, which contradicted any HBOT. During that time, all my teeth continued to deteriorate, some of which fell out or were down to the pulp and gum line causing chronic infections, abscesses and pain, besides cosmically looking like crystal meth teeth.
I hope you get the treatment you need.