Effect analysis of topical fluoride varnish on caries prevention of first permanent molars in school ⁃ age chil⁃ dren

Abstract

Objective To investigate the effectiveness of fluoride varnish in preventing first permanent molars caries inschool ⁃age children and provide necessary information for oral health instruction. Methods 378 children aged 6-7 years old in the first grade of primary school in dahua country, hechi city, Guangxi province (1 053 first permanent mo⁃ lars) were randomly recruited into 2 groups. The test group (542 first permanent molars in 191 children) was treated with fluoride varnish one time in a half year and given oral hygiene instruction 3 times; The control group (511 first permanent molars in 187 children) was only given oral hygiene instruction 3 times. All first permanent molars were checked after 18 months later for caries. Results After intervention, the caries prevalence rate in the test group raised from 21.99% to 27.75% compared with the control group from 24.60% to 37.43%. The caries incidence rate in test and control group was 5.76% and 12.83% respectively. There was a significant difference between 2 groups regardless of caries prevalence, car⁃ ies incidence, the DMFT reduction, the DMFs reduction, the occlusal caries prevalence, the pit and fissure caries preva⁃ lence, the proximal caries prevalence. Conclusion Semi⁃annual application of fluoride varnish is effective in the preven⁃ tion of dental caries in first permanent molars , which was worth of being popularized in clinic.

Keywords

• Duraphat
• First permanent molars
• Dental caries
• School⁃age children
• Oral health