Part of the problem is that dentists don't have the incentive nor arguably the training and knowledge to cure the problem. Cavities and lost teeth, brings them

Part of the problem is that dentists don't have the incentive nor arguably the training and knowledge to cure the problem. Cavities and lost teeth, brings them money. So don't expect them to be looking around for cures like regrowing teeth or reversing cavities, unless some unusual "one in a several billion" fellow comes along (who the others won't like) to change things (like how we got Penicillin or the cure for Polio). A lot of dentists would rather your teeth rot, so you need to pay them, or you make continual monthly payments to them. The biggest innovation in the last 50 years are titanium dental implants (very expensive) and the use of ceramic and acrylic (more expensive) over the insane amalgam fillings with mercury. And yet, many dentists still put the health hazard of amalgam with mercury in people's mouths (like it's a tradition) or do root canals which keep dead toxic teeth in mouths too. If you want less toxic options, then you must pay for much more expensive procedures.