I know us Brits always harp on about the National Health Service, but if you can find a dentist with NHS spaces available locally then you're in good hands.
But they're not without their commercial incentives either. And the waiting times can go into weeks for non-urgent work. Still, the costs are negligible in comparison. We perhaps pay in other ways...
I'm in Norway, I never have to wait more than a few days unless I ask for an appointment at a specific time of day.
Last time I went to my dentist it was because of a cracked filling (old amalgam), not in any pain, just a bit sensitive so not urgent, waited about four days.
Dentist declared that a crown was necessary but they didn't have a slot just then so would it be alright if I came back after lunch to have it fitted. The crown is manufactured on site using three d imaging and a fancy milling machine.
But they're not without their commercial incentives either. And the waiting times can go into weeks for non-urgent work. Still, the costs are negligible in comparison. We perhaps pay in other ways...