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Researchers develop adhesive materials to prevent bracket stains on teeth

Researchers develop adhesive materials to prevent bracket stains on teeth

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Researchers from Valencia (Spain), London (England) and Sul (Brazil) have performed research to develop adhesive materials that will prevent white stains from appearing on the teeth of people who use brackets.

The white stains that orthodontic brackets often leave on teeth is a result of enamel demineralization caused by bacterial proliferation in the adhesive area, specially when accompanied by inadequate oral hygiene. Researchers at the Odontology Department of Valencia’s Universidad CEU Cardenal Herrera in collaboration with the King’s College London Dental Institute and the Universidade Federaldo Rio Grande do Sul (Brazil) have compared the efficacy of three new types of experimental adhesives, with bactericidal and enamel remineralization properties which could prevent the appearance of these white stains around the brackets.

The research by CEU UCH Odontology teachers Salvatore Sauro and Santiago Arias in collaboration with the Universidade Federal do Rio Grande do Sul and the King’s College London Dental Institute, where Salvatore Sauro is an honorary professor, has been published in the Journal of Dentistry scientific magazine, one of the most prestigious in the field on an international level.

Bactericidal and remineralization properties

The study compares three experimental dental adhesives which contain a bioactive nano-mineral called halloysite and whose nanotubes have been loaded with triclosan, a strong antibacterial and fungicidal agent in different concentrations: 5, 10 and 20 percent. The research compares the three new, experimental biomaterials’ polymerization properties, their antibacterial strength and bioactive properties, which not only prevent demineralization of the teeth, but also promote remineralization.

The three experimental materials tested in the laboratory have demonstrated an ability to stop bacterial proliferation in the 24 hours following their use, but only the one with the highest concentration of triclosan, at 20 percent, has maintained this property after 72 hours. As far as the remineralizing effect, all three tested materials have proven to be effective two weeks after their use in dental enamel samples submerged in experimental saliva.

These results are a promising step forward in the development of new adhesives that are capable of preventing the appearance of the bacteria that demineralize the enamel surrounding the brackets and, at the same time, remineralize the area and thus prevent the appearance of white stains on the teeth.

Research team

Professor Salvatore Sauro leads the Investigation Groups of the CEU-UCH in solid dental tissue engineering in situ and minimally invasive adhesive therapeutic rehabilitation. He has performed ample research on the development of new biomaterials with therapeutic properties and to aid dental remineralization. CEU UCH Odontology Department professor Santiago Arias Luxan is the chief researcher of the university’s Orthodontics and Dentofacial Orthopedics Group, where he manages the Master’s Degree on this subject and teaches Orthodontics III and IV, an area he also dedicates much of his professional practice work to.

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Adhesives developed to prevent bracket stains on teeth

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