The next time you have a cavity you might be able to skip the filling and instead your teeth may regenerate on their own.
In a study, published in Scientific Reports, scientists from King's College London drilled holes in the teeth of mice and used biodegradable collagen sponges filled with a drug that stimulates stem cells in the tooth pulp. The Guardian reports the drug is being looked at as a potential Alzheimer's treatment. Study results show overtime the sponges degraded and the teeth regenerated on their own.
According The Guardian, scientists are now testing the method on the teeth of rats.
If that is successful, they will move onto clinical trials with humans.