http://www.colgate.com/en/us/oc/oral-health/life-stages/oral-care-age-55-up/article/oral-health-for-seniors
http://www.deardoctor.com/articles/cosmetic-dentistry/
http://www.webmd.com/oral-health/guide/dental-health-dental-care-products#1
https://www.youtube.com/watch?v=n2SWfOGLVT4
http://www.tcpalm.com/story/specialty-publications/your-news/st-lucie-county/reader-submitted/2017/01/25/national-prosthodontics-awareness-week-coming-april/97045280/