“…Schools were encouraged to have a policy regarding their children's oral health and to subsequently establish oral health-related activities or environments in schools. Studies on oral health-promoting schools were conducted in many countries, such as Indonesia, Taiwan, China, New Zealand, Nigeria, Finland, and Thailand [Petersen et al, 2001[Petersen et al, , 2004[Petersen et al, , 2015Tai et al, 2009;Anttonen et al, 2011;Amalia et al, 2012;Esan et al, 2015;Lai et al, 2016;Thornley et al, 2017]. Examples of the oral health supportive activities or environments established in schools were oral health education taught by professionals, oral health education integrated into the school curriculum and taught by school teachers, simple oral examinations conducted by teachers, toothbrushing after lunch, free toothbrushes and toothpaste (toothbrushing materials) for children, restricting sugary and junk food in schools, and providing vegetables and fruit in school meals [Kwan et al, 2005].…”