Fillings and the dentist's drill could soon become just an unpleasant memory now that scientists have developed a technique to rebuild teeth using tiny electrical pulses that could be available within three years.
Tooth decay is normally removed by drilling and the cavity is filled with amalgam or composite resin. The new treatment encourages the tooth to repair itself by speeding up the natural movement of calcium and phosphate minerals into the damaged tooth.
Known as Electrically Accelerated and Enhanced Remineralisation (EAER), the process developed by scientists uses a tiny electric current to push minerals into the damaged area.
The tooth is repaired without the need for drilling, injections or filling. Prof Nigel Pitts, from King's College London Dental Institute, said: "The way we treat teeth today is not ideal.
"When we repair a tooth by putting in a filling, that tooth enters a cycle of drilling and refilling as, ultimately, each 'repair' fails.