Scientists create new fillings made of same material in BUMPER CARS

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A new filling built with the same material used in bumper cars has been created by scientists.

Researchers created the formula using the additive thiourethane, also commonly found in protective coatings for vehicles.

They say fillings made of the material are twice as strong as standard fillings, which often break within a decade. 

The team of experts at Oregon Health & Science University believe the material could reduce the need for repeat dentist visits.

'Today's dental restorations typically only last seven to 10 years before they fail,' said Professor Carmem Pfeifer, study author. 

'They crack under the pressure of chewing, or have gaps form between the filling and the tooth, which allow bacteria to seep in and a new cavity to form.

'Every time this happens, the tooth under the restorations becomes weaker and weaker.

'And what starts as a small cavity may end up with root canal damage, a lost tooth or even life-threatening infections. 

'Stronger dental materials mean patients won't have to get fillings repaired or replaced nearly as often,' she added. 

'This not only saves them money and hassle, but also prevents more serious problems and more extensive treatment.'  

The team also claim to have created an adhesive that's 30 per cent stronger after six months in use, keeping the fillings in place for longer. 

The adhesive uses a specific kind of polymer known as methacrylamides, which is that is much more resistant to water damage, bacteria and enzymes in the mouth.