Through a cluster randomized controlled trial or RCT, fluoride varnished had been applied bi-annually specifically 5 applications in 26 months in a population of children, 6-8 years old, in deprived areas. Results of the study based on indicators such as decay, missing and filled teeth in both primary and permanent dentitions indicated that the said measure cannot be sufficient in the reduction of caries to improve public dental health (Rodgers, 2008). In Swedish schools, the efficacy of fluoride programs to counteract caries in adolescents in ages 13-16 years. Based on the initial 854 children that had been treated with fluoride varnish, there is a significant prevention of development of caries as compared to the group which is not treated.
The most significant difference had been observed in the caries high-risk area. The said study resulted in the conclusion that school is an important place to improve the dental health of children. In addition, one of the final results indicated that the treatment of fluoride varnish twice a year on a regular interval resulted in positive results specifically in the high-risk age and area (Skö ld, 2005).
Other research groups even agreed on the efficacy of the application of fluoride varnish at the right age, period and mode of application. Included in the said study is presented by Weintraub et al. who focused on the use of fluoride varnish in the prevention of caries (2006). Another specific problem in dental health is the white lesion. The said problem can be considered related to the cases of orthodontic treatments. A group of 10 orthodontic patients was given different treatments in a particular quadrant of the mouth specifically maxillary left and right and mandibular left and right.
Through a double-blinded set-up and a quarterly treatment of the fluoride varnish. The said study resulted in 44.3% less demineralization of teeth upon application of fluoride varnish compared to the control set-up (Vivaldi-Rodrigues, Demito, Bowman and Ramos, 2006).
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