1Prediction of caries activity A review of caries research in last centuryYUE Song-ling421-4242Effect of human parathyroid hormone 1-34 on the expression of Mrna of PTH/PTHrP receptor in human dental pulp cells cultured in vitroSUN Yu, CHEN Xin-mei, TAN Hong425-4283An in Vitro study on taper of root canal by use of digital X-ray system and stereomicroscopeLIU Wen, YANG Liu, XU Xiao-fang, LI Song429-4334The effect of aloe mastic on promoting wound healing after tooth extraction in animal modelMENG Pei-song, HU Bo, HU Cheng-ji, LIU Fu-fei, WANG Na, BI Liang-jia434-4375Effects of transforming growth fctor β(TGFβ-1)and dentin noncollagenous proteins(DNCP)on human embryonic ectomesenchymal cells in a three dimensional culture system438-4426Evaluating the effects of self etch adhesives in Light cure Dyract flow on the pit and fissure sealant technique443-4457Construction of S.mutans luxS mutants and their acid tolerance assay446-4498The association studies of IL-1 A+4845 genes polymorphisms with chronic periodontitisHAN Bing, GOU Jian-zhong, CHEN Xi450-4529Effects of hypoxia on the proliferation and alkaline phosphatase expression of human periodontal ligament cells in vitroTANG Kai-liang, LI Shu, WANG Jian, LIU Zong-xia, YU Lan453-45510Effect of periodontal therapy on IL-18 and lipid of serum in patients of coronary heart disease with chronic periodontitisZHU Hao, WU Guang-sheng, SU Zi-yan, WANG Qi-tao456-45911Effects of surface moisture on nanoleakage and bond strength of dentin adhesivesZHAO San-jun, CHEN Ji-hua, HOU Rui460-46312Clinical performance of bonded amalgam restorations aftter five yearsHUANG Xiao-jing, CAI Zhi-yu, ZHONG Sheng464-46613The failure factors in treatment of approximal caries lesions by tunnel restorationsJI Wei, CHEN Zhi468-47114Effects of initial periodontal therapy on subgingival pathogensYAO Wen-xin, SHU Rong472-47515Research progress and prospects in oral health impact profileZHANG Lin, HE Xiang-yi476-480 