Brush with care

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Science  17 Nov 2017:
Vol. 358, Issue 6365, pp. 883-884
DOI: 10.1126/science.358.6365.883-f

Many commercial toothpastes contain the antimicrobial compound triclosan, which helps to reduce plaque and gum bleeding. Han et al. show that the nylon brushes and elastomer plastic of the toothbrush head absorb triclosan from the toothpaste during brushing and release it again during brushing with triclosan-free toothpaste. Similar effects were seen for other chemicals in the toothpastes. Given concern over release of triclosan and other antimicrobial compounds into the environment, more studies of their unintended release from consumer plastics are warranted.

Environ. Sci. Technol. 10.1021/acs.est.7b02839 (2017).

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