“…Four studies (Frenkel et al, 2002;Gammack and Pulisetty, 2009;Khanagar et al, 2014;Reed et al, 2006) did not evaluate the oral health of the elderly. Two articles described the effects of an educational program on oral health provided to the elderly, not to the caregivers (Little et al, 1997;Persson et al, 1998) and two articles were review articles (Watt and Marinho 2005;Stein and Henry, 2009). The five included studies reported the effect of the caregivers' oral health education on the oral health status of 602 combined elderly residents (Boczko et al, 2009;Frenkel et al, 2001;Isaksson et al, 2000;Nicol et al, 2005;Portella et al, 2013).…”