关键词: 抽样调查, 龋病, 牙周健康

Abstract: Objective To survey the oral health status of 12 years old in Shaanxi province,and provide a base line for oral health service. Methods According to the third national oral health survey criteria,the oral status of 788 children in Shaanxi province were examined.SPSS 13.0 software was used for statistical analysis. Results The prevalence of caries and DFT were 21.2% and 0.33 respectively.The prevalences had no significant differences between male and female,urban and rural area;High levels of DFT were recorded in countryside and in the female,when compared to the urban and the male opponents.The survey found that the filling rate of caries was only 5.4%,in urban and female were higher than rural and male(P<0.05).The detection rate of dental calculus and gingival bleeding were 21.2% and 71.2%,respectively.There were significant differences of Gingival bleeding prevalence between rural and urban area(P<0.01),but no significant difference between male and female(P<0.05).dental calculus prevalence between rural and urban area male and female had no significant difference(P>0.05). Conclusion Oral health status in Shaanxi province should be paid more attention to.More effective measures should be taken to control the prevalence of dental caries,increase filling rate,improve oral health status,and strengthen the oral health education.

Key words: sample survey, caries, periodontal health