Stronger material for filling dental cavities has ingredients from human body
Scientists in Canada and China are reporting development of a new dental filling material that substitutes natural ingredients from the human body for controversial ingredients in existing “composite,” or plastic, fillings. The new material appears stronger and longer lasting as well, with the potential for reducing painful filling cracks and emergency visits to the dentist, the scientists say. Their study appears in the current edition of ACS Applied Materials & Interfaces, a monthly journal.
X.X. Zhu and colleagues point out that dentists increasingly are using
white fillings made from plastic, rather than “silver” dental fillings.
Those traditional fillings contain mercury, which has raised health
concerns among some consumers and environmental issues in its
production. However, many plastic fillings contain controversial
ingredients (such as BisGMA) linked to premature cracking of fillings
and slowly release bisphenol A, a substance considered as potentially
toxic to humans and to the environment.
News release courtesy of American Chemical Society
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