1Public health practices in caries prevention in ChinaTAI Bao-junSYMPOSIUM577-5792Topical fluoride therapy for cariesZHANG YingSYMPOSIUM580-5823Pit and fissure sealant for caries preventionSI Yan, ZHENG Shu-guoSYMPOSIUM582-5874Effects and application of oral probiotics on dental caries preventionWANG Sheng-chao, XU Hao-kunSYMPOSIUM587-5915Vaccine against dental cariesXU Qing-anSYMPOSIUM591-5946Present situation and problems of oral disease prevention and treatment in ChinaLI Gang, SUN Yi-qun, HAO Yuan-yuanEXPERT LECTURE595-5997Cytotoxicity of dental ceramic alloys on L929 mouse fibroblasts:an in vitro studyJIANG Lei, LIN Hong-lei, ZHANG Chang-yuan, ZHENG Ming, LIN Dong-hong, CHENG HuiORIGINAL CONTRIBUTIONS600-6038Investigation into dental health epidemidogy in children aged 3 years in ShenyangZHANG Kai-qiang, ZHANG Ying, ZHANG Si-yu, ZHANG Yang, MA Lin, GU He-feng, PAN Xiao-zhongORIGINAL CONTRIBUTIONS604-6079Effects of silver-palladium alloy porcelain crown in different shoulder design on the periodontal tissue of the restored teethLI Hong-yang, ZHONG Li-fang, LIU Bing, CAI Hong-danORIGINAL CONTRIBUTIONS608-61210Detection of Fusobacterium nucleatum in the gingival crevicular fluid of orthodontic patientsYANG Gang-ling, GUO Yang, ZHANG Jian-gang, ZHANG Yu-jie, XIAO Shui-qingORIGINAL CONTRIBUTIONS613-61611Clinical evaluation of total glucosides of paeony combined with intralesional triamcinolone acetonide injection for oral lichen planusZUO Wen-xin, QIN Nian-hong, LI Xiao-yu, LIU KaiORIGINAL CONTRIBUTIONS617-619,62212Effect of the length of crown and the depth of undercut on the retention of flexible denture in maxillary incisor regionZOU Kang-yuan, FU Zhen-nan, CHEN Yue-ming, CHEN Jue-qingORIGINAL CONTRIBUTIONS620-62213Efficacy analysis of the treatment for oral hemangioma by Pingyangmycin with different concentrationLIU Zheng-yu, XUE Lei, YUAN Wei-li, WEI Jing-jian, LEI Bo-cheng, WANG Xu-kaiORIGINAL CONTRIBUTIONS623-62514Clinical research progress of alkali production by oral bacteriaPENG Xian, GUO QiangREVIEW626-63015Application of gene chip technology to oral medicineLI ChangREVIEW631-634 