I seriously doubt most of us Yanks know that much more about our Brit cousins but when it comes to dental care we beat them hands down.
It surely does cut both ways (certainly does based on some of the comments Ive seen about the UK on this site).
Where DO you get this dental care thing about Britain from though? Most Brits are utterly oblivious to it. Is there any kind of evidence at all (other than anecdotal) that Brits have bad teeth?