Levels of tooth decay among adults in England are now similar to those last seen more than 25 years ago, according to new figures. More than four in 10 people (41 per cent) had obvious signs of rotten ...

You only get 52 teeth in your lifetime: 20 baby teeth, followed by 32 adult teeth. It's not like that for all animals. Some, like rodents, never replace their teeth. Others, like sharks, keep ...