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Saturday, May 5, 2012

Dental filling of the future kills bacteria and regenerates tooth

The dreaded trip to the dentist to replace a worn-out filling could soon be a thing of the past, thanks to a dental breakthrough.
Scientists have used nanotechnology to create the first cavity-filling composite that kills harmful bacteria and regenerates tooth structure lost to decay.

Rather than just limiting decay with conventional fillings, the new material controls harmful bacteria, which co-exist in the natural colony of microorganisms in the mouth.
The tooth hurts: Scientists expect their new type of dental filling to last far longer than the current standard
The tooth hurts: Scientists expect their new type of dental filling to last far longer than the current standard
It also works to remineralise the tooth, said study leader Professor Huakun Xu from Maryland University School of Dentistry.
He said: 'Tooth decay means that the mineral content in the tooth has been dissolved by the organic acids secreted by bacteria residing in biofilms or plaques on the tooth surface.
'These organisms convert carbohydrates to acids that decrease the minerals in the tooth structure.'

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