https://www.smilebrilliant.com/articles/tooth-sensitivity-causes-solutions-prevention
http://www.everydayhealth.com/dental-health-pictures/bad-habits-that-can-harm-your-teeth.aspx
http://www.deardoctor.com/inside-the-magazine/issue-34/root-cavities/
http://www.colgate.com/en/us/oc/oral-health/life-stages/oral-care-age-55-up/article/oral-health-for-seniors
https://www.colgate.com/en-us/oral-health/basics/brushing-and-flossing/how-to-floss
https://www.carefreedental.com/resources/13-dental-health/90-why-sports-drinks-are-destroying-athletes-teeth
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
