Objective to investigate the caries prevalence of deciduous among children in Haishu, Ningbo City in order to guide the prevention and cure of the caries of deciduous teeth.
目的了解宁波市海曙区儿童乳牙龋病流行情况以指导今后的乳牙龋病防治工作。
Differences in blood lead level explained some of the differences in caries prevalence in different income levels and regions of the US.