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The blue light emitted at 480nm has shown to suppress the growth of pathogenic bacteria in the mouth that can cause gum disease, bad breath, cardiovascular disease, stroke, premature birth, low birth weight, and Alzheimer’s disease.

The Science links behind oral health

Harvard Medical School, January 2019 Photomedics Bluelight kills the bacteria Porphyromonas Gingivalis.

May 2018, Dentistry Today

Feb 2006 Harvard Magazine

May 2005, New Scientist

April 2005, Harvard Gazette

April 2005, Journal of American Dentistry

March 2005, American Association for the Advancement of Science

Previous Forsyth research had shown that as many as 700 different types of oral bacteria may be found in dental plaque. While some bacteria appear to be benign or even helpful, others may invade and destroy gum tissue and bone leading to loss of teeth, and, possibly, to infection elsewhere in the body. 

They found that blue light at 480nm rapidly killed BPB in pure cultures and that it selectively eliminated BPB in plaque samples containing 500-600 different bacteria. They also found that certain species were more readily inactivated by the light than others and that varying the intensity and exposure time had different impacts on different species.

 

The researchers conclude that intraoral light exposure can selectively reduce pathogens in dental plaque.

 

The findings could lead to new methods for preventing or controlling periodontal disease. Such methods would be rapid, non-invasive, and nontoxic, Soukos said.

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