<strong>唐山市7~9岁儿童第一恒磨牙患龋状况及相关性研究</strong>

于雪王琳李洁董青

Caries status of the first permanent molar among 7-to 9-year-old children in Tangshan city and their correlation

Yu Xue, Wang Lin, Li Jie, Dong Qing

华西口腔医学杂志 . 2015, (1): 54 -57 . DOI: 10.7518/hxkq.2015.01.012