http://abcnews.go.com/Health/john-lennons-molar-fight-oral-cancer/story?id=17627303
https://www.youtube.com/watch?v=n2SWfOGLVT4
http://www.deardoctor.com/articles/implant-timelines-for-replacing-missing-teeth/
http://www.bing.com/videos/search?q=periodontal+disease+videos&qpvt=periodontal+disease+videos&view=detail&mid=6309824462C735AE4E8F6309824462C735AE4E8F&FORM=VRDGAR
http://www.webmd.com/oral-health/guide/choosing-a-toothbrush-the-pros-and-cons-of-electric-and-disposable#1