How the Americans don't have better teeth than us after all

How the Americans don't have better teeth than us after all: Adults in the US more likely to suffer poor dental health than those in England, research shows
The English have suffered a century of jokes about their 'terrible' teeth
But research proves Americans are more likely to suffer poor dental health
Average number of missing teeth is also higher in the US than in England
We have suffered a century of jokes about our 'terrible' teeth. But it turns out the English will have the last laugh – because our smiles are not as wonky as our US friends would have us believe.
Americans do not have better teeth than the English, researchers have proven.
A team from both sides of the Atlantic compared data for thousands of patients from the English Adult Dental Health Survey and the US National Health and Nutrition Examination Survey.

The study showed the average number of missing teeth was higher in the US (7.31) than in England (6.97). 

Americans were also more likely to suffer poor dental health due to socio-economic factors.

Surely not! USA  is fluoridated.