Dental is expensive, and it can have devastating impacts on health if it isn't taken care of or is done wrong.
It's also very ambiguous as to what is dental and what is medical. For example, I got a severe case of TMJ disorder suddenly. Doctor wouldn't do anything because it's "dental" and my dental insurance didn't cover it because it was the jaw, not the teeth, and therefore "medical." These distinctions date back to medieval roles - they didn't make sense then, they certainly don't make sense now, and we built two entire industries off of the made up distinction.
And also, grateful isn't a term that should be demanded of citizens when their government still has work to do. Good changes don't mean that more changes aren't needed.