End of fillings in sight as scientists find Alzheimer's drug makes teeth grow back
An image showing repair after four weeks (left) and six weeks (right) CREDIT: KING'S COLLEGE
Fillings could be consigned to history after scientists discovered that a drug already trialled in Alzheimer's patients can encourage tooth regrowth and repair cavities.
Researchers at King's College London found that the drug Tideglusib stimulates the stem cells contained in the pulp of teeth so that they generate new dentine the mineralised material under the enamel.
Teeth already have the capability of regenerating dentine if the pulp inside the tooth becomes exposed through a trauma or infection, but can only naturally make a very thin layer, and not enough to fill the deep cavities caused by tooth decay.
An image showing repair after four weeks (left) and six weeks (right) CREDIT: KING'S COLLEGE
But Tideglusib switches off an enzyme called GSK-3 which prevents dentine from carrying on forming.
Scientists showed it is possible to soak a small biodegradable sponge with the drug and insert it into a cavity, where it triggers the growth of dentine and repairs the damage within six weeks.
The tiny sponges are made out of collagen so they melt away over time, leaving only the repaired tooth.
Professor Paul Sharpe, lead author of the study, of the Dental Institute, from Kings College London, said: The simplicity of our approach makes it ideal as a clinical dental product for the natural treatment of large cavities, by providing both pulp protection and restoring dentine.
In addition, using a drug that has already been tested in clinical trials for Alzheimers disease provides a real opportunity to get this dental treatment quickly into clinics.