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New evidence on how fluoride fights tooth decay

Date:
May 1, 2013
Source:
American Chemical Society
Summary:
In an advance toward solving a 50-year-old mystery, scientists are reporting new evidence on how the fluoride in drinking water, toothpastes, mouth rinses and other oral-care products prevents tooth decay.

In an advance toward solving a 50-year-old mystery, scientists are reporting new evidence on how the fluoride in drinking water, toothpastes, mouth rinses and other oral-care products prevents tooth decay.

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Their report appears in the ACS journal Langumir.

Karin Jacobs and colleagues explain that despite a half-century of scientific research, controversy still exists over exactly how fluoride compounds reduce the risk of tooth decay. That research established long ago that fluoride helps to harden the enamel coating that protects teeth from the acid produced by decay-causing bacteria. Newer studies already found that fluoride penetrates into and hardens a much thinner layer of enamel than previously believed, lending credence to other theories about how fluoride works.

The report describes new evidence that fluoride also works by impacting the adhesion force of bacteria that stick to the teeth and produce the acid that causes cavities. The experiments -- performed on artificial teeth (hydroxyapatite pellets) to enable high-precision analysis techniques -- revealed that fluoride reduces the ability of decay-causing bacteria to stick, so that also on teeth, it is easier to wash away the bacteria by saliva, brushing and other activity.


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. Peter Loskill, Christian Zeitz, Samuel Grandthyll, Nicolas Thewes, Frank Mόller, Markus Bischoff, Mathias Herrmann, Karin Jacobs. Reduced Adhesion of Oral Bacteria on Hydroxyapatite by Fluoride Treatment. Langmuir, 2013; 130423132120002 DOI: 10.1021/la4008558

Cite This Page:

American Chemical Society. "New evidence on how fluoride fights tooth decay." ScienceDaily. ScienceDaily, 1 May 2013. <www.sciencedaily.com/releases/2013/05/130501112855.htm>.
American Chemical Society. (2013, May 1). New evidence on how fluoride fights tooth decay. ScienceDaily. Retrieved April 2, 2015 from www.sciencedaily.com/releases/2013/05/130501112855.htm
American Chemical Society. "New evidence on how fluoride fights tooth decay." ScienceDaily. www.sciencedaily.com/releases/2013/05/130501112855.htm (accessed April 2, 2015).

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