Effect analysis of topical fluoride varnish in preventing primary caries among 3-5 years old children in Nanning

Abstract

Objective To investigate the effectiveness of fluoride varnish in preventing primary caries in 3-5 years old children in the kindergarten collective environment and provide necessary information for oral health care plans. Methods Children aged 3-5 years old were randomly assigned into two study groups. The test group was treated with fluoride varnish and given oral hygiene instruction semi-annually for 4 times; the control group was only given oral hygiene instruction semi-annually. Follow-up examinations were conducted after 4 interventions to monitor primary caries increment among these children. Results After intervention, the caries prevalence of test group raised from 51.61% to 59.14%, with incidence of 7.53% at last. In the control group, the prevalence before and after was 52.61% and 73.93%, with the incidence of 21.33%. The differences of the prevalence, the dmft value and the incidence between the test group and control group were significant. Conclusion Semi-annual application of fluoride varnish is effective in the prevention of dental caries in primary teeth of children and can improve the oral health of children.

Keywords

• Duraphat，
• Intervention trial ，
• Primary teeth，
• Dental caries，
• Oral health，