https://www.mouthhealthy.org/en/ada-seal-products/what-is-the-ada-seal?utm_source=buzzfeed&utm_medium=video&utm_content=eyespeeled
http://www.cnn.com/2016/03/04/health/when-to-replace-toothbrush-sick/index.html
http://www.webmd.com/oral-health/guide/dental-health-dental-care-products#1
http://www.webmd.com/oral-health/guide/choosing-a-toothbrush-the-pros-and-cons-of-electric-and-disposable#1
http://www.webmd.com/oral-health/video/why-floss-breaks
http://www.webmd.com/oral-health/video/is-it-gum-disease