Freya Koss, 73, Wynnewood, Pa., campaigned for an end to the use of mercury dental fillings outside the American Dental Association convention in Philadelphia in 2005.
Freya Koss, 73, Wynnewood, Pa., campaigned for an end to the use of mercury dental fillings outside the American Dental Association convention in Philadelphia in 2005. Courtesy of Freya Koss
Freya Koss, 73, Wynnewood, Pa., campaigned for an end to the use of mercury dental fillings outside the American Dental Association convention in Philadelphia in 2005. Courtesy of Freya Koss

Mercury much more dangerous in air than in teeth

August 10, 2015 12:00 AM

UPDATED August 10, 2015 07:35 AM

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