According to the latest reports, drilling and fillings may soon become history, all thanks to a new device that helps dentists detect tooth decay early.

The device, which is called CarieScan PRO, clips onto the mouth and through the tooth passes a small electrical current.

Sky News has reported that traffic light colours indicate the level of decay, which gives health experts a correct status of the problem.

"What I've been able to do is diagnose decay early and make sure it's treated with fluoride varnish rather than putting in a filling," Wembley-based dentist Dr Martin Delahaye said.

Scientists in Scotland developed the CarieScan PRO.

"The CarieScan PRO is an interesting innovation, and it's great too, that the concept and design comes from a UK company. We look forward to seeing the results of future clinical trials to establish its benefits," the British Dental Association's scientific advisor Professor Damien Walmsley said. (With Inputs from Agencies)