What? According to your comments that would mean that for example Austria has only eight dentists in the public health care system? That's just not true.

Of course, no matter how good a system is, we can always try to improve it, like including more services, but it's of course a balance.

There is a simple way that would improve health care in practically all countries: Make private health care illegal, not from one day to the next, but gradually. The only way to improve health care would then be to improve health care for everybody.