1. World Health Organization, “Oral health.” [Online]. Available: http://www.who.int/oral_health/en/. [Accessed: 15-Apr-2018].
2. U.S. Department of Health and Human Services, “Oral Health,” 13-Apr-2018. [Online]. Available: https://www.healthypeople.gov/2020/topics-objectives/topic/oral-health/objectives. [Accessed: 15-Apr-2018].
3. Centers for Disease Control and Prevention, “Oral Health In America: Summary of the Surgeon General’s Report,” 19-Aug-2016. [Online]. Available: https://www.cdc.gov/oralhealth/publications/sgr2000_05.htm.
4. M. Glick, D. M. Williams, D. V. Kleinman, M. Vujicic, R. G. Watt, and R. J. Weyant, “A new definition for oral health developed by the FDI world dental federation opens the door to a universal definition of oral health,” J. Public Health Dent., vol. 77, no. 1, pp. 3–5, Dec. 2017.
5. J. A. Gil-Montoya, A. L. F. de Mello, R. Barrios, M. A. Gonzalez-Moles, and M. Bravo, “Oral health in the elderly patient and its impact on general well-being: A nonsystematic review,” Clin. Interv. Aging, vol. 10, pp. 461–467, Feb. 2015.