i recently got dental insurance.
i was reading over the coverage plan and it struck me that dental insurance is cheap, and for the most part it works really well compared to its big sister health insurance.
all preventative care is covered 100%. it is once you start needing stuff fixed that they drop it to 80% and when you start really screwing up* that they only cover 50%.
this whole "pay for preventative care" angle makes a lot more sense to me than the "pay per service" or the "take this prescription and go away, that will be $50 please" models for health "care".
*"screwing up" is a relative term. i speak from the experience of having teeth replaced after an accident.