the teeth thing is more true than false.
most of the people i met, i wouldn’t trade my mouth for theirs.
it’s all about where they go, and if they go, for dental care. i had a small problem i needed to have taken care of and i went to a private (ie non-nhs) dentist and had it taken care of and i paid for it right there.
most folks if they go to a nhs dentist may wait b/c they’re busy and don’t have to pay (or pay as much) and they pretty much weren’t happy with the service. i remember complaints far more than nice things said about nhs dentists.
Dental caries is often due to non-fluoridated water, genetics and poor hygiene. BTW raised in England, I have better teeth than most of my US neighbors. In school, we were taught to use correct grammar, enunciate each word according to the Oxford dictionary and encouraged to lose any regional accent. Villages, towns and counties had recognizable dialects which were both a source of pride (or ridicule) and considered ‘charming’ (or uneducated). Most Brits can identify your village/County of origin just by your speech pattern and pronunciation. BBC announcers do not use ‘posh’ English - they affect a bastardized Cockney/Cambridge hybrid. e.g. Piers Morgan.
It is always taught that you should write “properly” and use correct language in formal writing so that it is easier to understand when read