[The epidemiological investigation of dental caries among 5-year old children in Liaoning province].

Purpose: To investigate the oral health status and its influential factors among pre-school children in Liaoning province, and to provide first hand data for prevention of caries.
Methods: According to the Third National Oral Health Investigation criteria, the oral status of 792 children aged 5 years old in 6 regions of Liaoning province were examined. SPSS 13.0 software package was used for statistical analysis.
Results: The prevalence of dental caries and caries means of 792 subjects were 73.86% and 4.38 respectively. The prevalence of dental caries and caries means in rural area was significantly higher than that in city area, (X(2)=16.07,P<0.01). There was no significant difference of caries prevalence between male and female X(2)=0.46,P>0.05). The prevalence of dental caries and caries means of 5-year old children in Liaoning province were lower than that of ten years ago.
Conclusion: Oral health status in Liaoning province should be paid more attention, and more effective measures should be taken to the incidence of dental caries.