sugary foods is one possible explanation.
West Ham United's medical staff said athletes often had worse teeth than the general population.
Regularly consuming sugary foods is one possible explanation.
The dentists, from the International Centre for Evidence-Based Oral Health at University College London, examined 187 players' sets of teeth miris spa.
They found 53% had dental erosion, 45% were bothered by the state of their teeth and 7% said it affected their ability to train or play.
Around 40% had tooth decay, compared with 30% of people of a similar age in the general population.
Prof Ian Needleman, one of the researchers, told the BBC News website: "These are individuals who otherwise invest so much in themselves so it's a surprising finding miris spa.
"There are two main groups - some have a catastrophic effect, they have very severe abscesses that stop them in their tracks and they cannot play or train.