Objective: To determine the caries status of 5-year-old children in Shanghai.
Methods: Use multistage sampling method,stratified sampling and simple random sampling methods. 2 132 5-year-old children were chosen and their DMFTs were examined. Two thirds were done in three downtown districts and the rest in three suburb counties. Each gender occupies half.
Results: DMFT in downtown and suburb was 3.46 and 7.37, respectively. Caries prevalence was 71.13% and 92.56%, respectively.The percentage of filling in DMFT was 14.79% and 3.24%, respectively. All this three indices proved to be significantly different between downtown and suburb.
Conclusion: It is indicated that caries prevalence of deciduous teeth should be lowered both in downtown and suburb areas. Filling percentage should be improved urgently, especially in suburbs. The preventive means should focus on suburbs as well.