it's that without dental care, gum disease and rotting teeth - even from mis-aligned teeth - cause far more serious health issues other than nasty breath, having to mush your food like a baby's food, and a horrible "smile" because those mis-aligned teeth made it hard to clean.
Too many people look at dental care as "cosmetic" - because being too lazy to brush your teeth regularly causes cavities, and caps can change your appearance so you look better than how Gawd made you - or whatever other excuses medical care executives have used for not including dental as a medical discipline or service ever since Barbers could no longer practice both Dentistry and Surgery without years of medical school.
It's almost as if Medical Science policy makers have decided that since we aren't born with teeth, and most of us lose our teeth as we grow older, teeth and oral "health" doesn't matter much, because we can always just yank our teeth before they get too bad and still "function" if we can't afford to fix or replace them.
If in human development, our children were born "blind" (eyes closed for a few weeks or months) like many other mammals, and eventually went blind again as we grew older, would we handle optometry the same way - oh, wait...We do...
Haele