best of craigslist : "Dear Red States..." A Letter From The Blue!
http://www.craigslist.org/about/best/sfo/80714812.html
StateMaster - Statistics Oral health Loss of natural teeth by state
http://www.statemaster.com/graph/hea_ora_hea_los_of_nat_tee-health-oral-loss-natural-teeth
"DEFINITION: Adults aged 65+ who have had all their natural teeth extracted."