1. National Institute of Dental and Craniofacial Research, National Institutes of Health Tooth loss in seniors (age 65 and over) http://www.nidcr.nih.gov/nidcr2.nih.gov/Templates/CommonPage.aspx?NRMODE=Published&NRNODEGUID=%7b76874AE7-38BF-4354-B7D5579DF5E71467%7d&NRORIGINALURL=%2fDataStatistics%2fFindDataByTopic%2fToothLoss%2fToothLossSeniors65andOlder&NRCACHEHINT=Guest#Table2
2. Vargas CM Kramarow EA Yellowitz JA The oral health of older Americans. Trends in health and aging
3. National Institute of Dental and Craniofacial Research, National Institutes of Health Dental caries (tooth decay) in seniors (age 65 and over) http://www.nidcr.nih.gov/DataStatistics/FindDataByTopic/DentalCaries/DentalCariesSeniors65older.htm
4. National Institute of Dental and Craniofacial Research, National Institutes of Health Periodontal disease in seniors (age 65 and over) http://www.nidcr.nih.gov/DataStatistics/FindDataByTopic/GumDisease/PeriodontaldiseaseSeniors65over.htm
5. Social disparities in periodontitis among United States adults 1999-2004;Borrell;Community Dent Oral Epidemiol,2008