Why is it that British people have rotten teeth?

Is it just that they lack dental services over there? Is it all the tea? Do they just not care?
--------------------
I have lived here for a while now and have never seen one person with rotten teeth,I am sure that there are but,I have never seen them.To oldster,who said we don't have fluoride in the water,I would suggest that you first do a spell check on the word and secondly get your facts straight,the water in Britain has fluoride added and has for at least forty years,probably longer.I find this question to have no merit whatsoever,have you ever been over here to see?You don't say what country you are from or where you got your information from.Why is it that people from your country are morbidly obese,spineless retards with no knowledge of history,geography and have teeth fetishes? Edit........Punk Propagandist,what is to defensive?Do you mean so defensive or too defensive.Whatever it is that you are attempting to say,you are wrong.Why are americans so obnoxious?What is the point of such a generalising question if it isn't to further the stupid myth of everyone having rotten teeth.In a test of american university students,almost 80% of them couldn't locate washington d.c on a map of america.Take a look on you-tube at some of the retards who said that Korea was Australia simply because someone had changed the names around.Japan was a place in China did not know which continent was Europe and which was Asia,.I could go on and on and on with these examples but there is no point.It is a well documented fact.
Source