Spanish researchers develop new generation of invisible brackets

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Nanoparticles incorporated into a polymer mould provide reinforcement for invisible brackets. (Photo courtesy of Charles III University of Madrid, Spain)

Spanish researchers develop new generation of invisible brackets

In collaboration with Euro Ortodoncia, a Spanish orthodontic materials manufacturer, researchers at the Charles III University of Madrid have developed a new generation of stronger clear dental brackets. Using nanotechnology, they were able to improve the brackets’ endurance and reduce the friction between teeth and braces significantly.

According to the researchers, transparent brackets have been well established in orthodontics in recent years. Yet, they still present problems of wear induced by friction and contact with food.

Through a patented production process, aluminium oxide nanoparticles were distributed evenly throughout polysulphone, the polymer mould used by Euro Ortodoncia to produce brackets. The new material increases mechanical and friction resistance while retaining bracket transparency, they stated.

“We have been able to develop a more rigid material with this technology, which has a clearly improved friction resistance, thus withstanding the wear and tear produced by teeth or by chewing,” said Prof. Juan Baselga, head of the university’s Polymers and Composite Group.

According to Baselga, these new nano-reinforced plastics could also be of interest to various other industries. For example, they could be used in the health sector for the production of medical and surgical equipment, as the material is biocompatible. In addition, they have potential applications in the automotive industry and in the area of safety. For instance, polysulphone with nanoparticles could be used in the development of safer visors for fire fighters, he said
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