It certainly is VERY expensive here - and I am terrified of dentists too, so now I have to get ripped off into the bargain..! ;-)
I have never really grasped the disconnect between health service and dentistry. They seem to be a part of the same process but both here and in the UK, they are not covered by free healthcare although almost everything else is.
They can also be connected - for example, if you have heart valve surgery, dental care is regarded as critically important in order to avoid bacterial infection of the remaining natural valves - yet the valve surgery will be paid for, as well as any ongoing "maintenance" like CT scans etc - but any dental work is down to whether you can afford it.
I have American friends with perfect teeth - their dentists seem to be so much better than anyone elses! Don't know how much they charge though.