Journal of Prevention and Treatment for Stomatological Diseases ›› 2017, Vol. 25 ›› Issue (4): 254-257.doi: 10.12016/j.issn.2096-1456.2017.04.011

• Prevention and Treatment Practice • Previous Articles     Next Articles

Effect analysis of topical fluoride varnish on caries prevention of first permanent molars in school-age children

Bei-si CHEN1(), Qiu-lin LIU1, Bo-lin CHEN1, Wei WU2, Xue-ling MA1, Xiao-juan ZENG1()   

  1. 1. Public Health Department, the Affiliated Stomatology Hospital of Guangxi Medical University, Nanning 530021, China
    2. Guangdong Provincial Traditional Chinese Medical Hospital, Guangzhou 510600, China
  • Received:2016-09-16 Revised:2016-10-07 Online:2017-04-20 Published:2018-09-03

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 molars) 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, caries incidence, the DMFT reduction, the DMFs reduction, the occlusal caries prevalence, the pit and fissure caries prevalence, the proximal caries prevalence. Conclusion Semi-annual application of fluoride varnish is effective in the prevention of dental caries in first permanent molars , which was worth of being popularized in clinic.

Key words: Duraphat, First permanent molars, Dental caries, School-age children, Oral health

CLC Number: 

  • R788

Table 1

The first peramemt molar caries before and after the intervention in two groups of chidren"

组别 受检人数 患龋人数 患龋率(%) χ2 P 龋均 t1 P1 龋面均 t2 P2
干预前 试验组 191 42 21.99 0.360 0.548 0.43 ± 0.92 0.692 0.490 0.57 ± 1.33 0.806 0.421
对照组 187 46 24.60 0.50 ± 0.99 0.68 ± 1.54
干预后 试验组 191 53 27.75 4.037 0.045 0.58 ± 1.03 1.768 0.078 0.75 ± 1.44 1.667 0.096
对照组 187 70 37.43 0.78 ± 1.16 1.06 ± 1.94

Table 2

The new first peramemt molar caries after the intervention in two groups of chidren"

组别 受检
人数
发生新龋
例数
发病率
(%)
χ2 P 新增龋均
x?±s
t1 P1 新增龋面均
x?±s
t2 P2
试验组 191 11 5.76 5.629 0.018 0.15 ± 0.47 2.260 0.024 0.20 ± 0.61 2.199 0.029
对照组 187 24 12.83 0.28 ± 0.65 0.37 ± 0.91

Table 3

The tooth surface caries before and after the intervention in two groups of chidren n(%)"

龋分类 牙面 试验组 对照组 χ12 P1 χ22 P2
受检牙数 干预前 干预后 受检牙数 干预前 干预后
窝沟龋 牙合面 542 81(14.94) 105(19.37) 511 88(17.22) 138(27.01) 1.012 0.315 8.633 0.003
颊面 542 17(3.14) 26(4.80) 511 20(3.91) 27(5.28) 0.469 0.494 0.13 0.718
腭面 542 8(1.48) 10(1.85) 511 13(2.54) 19(3.72) 1.535 0.215 3.446 0.063
小计 542 106(19.56) 141(26.01) 511 121(23.68) 184(36.01) 2.643 0.104 12.309 <0.001
邻面龋 近中面 542 0(0.00) 2(0.37) 511 3(0.59) 8(1.57) 1.459 0.227 2.832 0.092
远中面 542 2(0.37) 3(0.55) 511 4(0.78) 7(1.37) 0.232 0.630 1.097 0.295
小计 542 2(0.37) 5(0.92) 511 7(1.37) 15(2.94) 2.040 0.153 5.72 0.017

Table 4

The new first peramemt molar caries after the intervention in two groups of chidren"

组别 受检牙数 发生新龋牙数 新增患龋牙面数 发病率1)(%) χ2 P
试验组 542 28 38 5.12 9.404 0.002
对照组 511 52 71 10.18
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