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Stronger Material For Filling Dental Cavities Has Ingredients From Human Body

Date:
May 27, 2009
Source:
American Chemical Society
Summary:
Scientists 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.

Researchers are reporting progress toward a stronger material for dental cavities using ingredients from the human body. Arrow points to a filling made of "composite."
Credit: NIST

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.

Julian 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.

The scientists developed a dental composite that does not contain these ingredients. Instead, it uses "bile acids," natural substances produced by the liver and stored in the gallbladder that help digest fats. The researchers showed in laboratory studies that the bile acid-derived resins form a hard, durable plastic that resists cracking better than existing composites.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Gauthier et al. New Dental Composites Containing Multimethacrylate Derivatives of Bile Acids: A Comparative Study with Commercial Monomers. ACS Applied Materials & Interfaces, 2009; 1 (4): 824 DOI: 10.1021/am8002395

Cite This Page:

American Chemical Society. "Stronger Material For Filling Dental Cavities Has Ingredients From Human Body." ScienceDaily. ScienceDaily, 27 May 2009. <www.sciencedaily.com/releases/2009/05/090525115400.htm>.
American Chemical Society. (2009, May 27). Stronger Material For Filling Dental Cavities Has Ingredients From Human Body. ScienceDaily. Retrieved April 24, 2014 from www.sciencedaily.com/releases/2009/05/090525115400.htm
American Chemical Society. "Stronger Material For Filling Dental Cavities Has Ingredients From Human Body." ScienceDaily. www.sciencedaily.com/releases/2009/05/090525115400.htm (accessed April 24, 2014).

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