Almost every time that something about Britain is mentioned online, there will be someone claiming that we all have rotten teeth. Seemingly unaware that British dentistry has changed over the last century; perhaps stuck with stereotypes learned from WWII soldiers stationed in Britain.
If you check, you will find that according to international surveys, British teeth quality (in terms of cavities) is actually quite good. The last link ranks the UK fourth compared with the USA’s ninth – it often seems that those saying the equivalent of “Ah! What about your teeth” seem to be Americans.
And we’re definitely not getting wooden teeth (just for once it’s a semi-relevant photo).