New Fillings Kill Bacteria and Regenerate Tooth Tissue

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Scientists in America have developed a new filling, which not only kills bacteria, but also regenerates tooth tissue that has been affected by decay.

Researchers at the University of Maryland School of Dentistry have produced a new multi-purpose composite filling using nanotechnology.

Professor Huakan Xu said that the new composite filling is a “revolutionary dental weapon”, which not only kills harmful bacteria, but also co-exists with the natural bacteria found in the mouth.

According to Xu, who is Director of the Division of Biomaterials and Tissue Engineering at the university’s School of Endodontics, Prosthodontics and Operative Dentistry, bacteria remains once the tooth has been drilled and the cavity has been filled and the new composite fillings are able to neutralise the effects of the remaining bacteria to prevent further decay.

Researchers have also added antibacterial agents to a priming material, which is used by dentists before a filling is placed and adhesive materials, which are used to make the filling, are stuck to the cavity. The fillings are also more durable than traditional fillings and should last at least 15 years.

The new fillings have already been tested using saliva from volunteers and the next step is to test them on animal and human teeth. The trialling process will take place in conjunction with the Federal University of Ceara in Brazil.



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