1Effects of epidermal growth factor on the formation of soft and hard tissue passage during tooth eruptionLIU Zong-xia, WANG Jian, LI Shu, YANG Ghun-yu122-1272Periodontal regeneration enhanced by the application of nano-Hap/collagen and basic fibroblast growth factorLU Hong, TIAN Yu, WU Zhi-fen, WANG Xiao-yong128-131,1633Expression of Smac and Bax in chronic periodontal tissues and their roles in apoptosisFENG Li, DONG Gen-xi, SUN Xiao-wei132-1354The effects of aging on the isolation and characteristics of human periodontal ligament stem cells from human impacted third molarsZHANG Jing, YANG Hao, GAO Li-na, AN Ying, CHEN Fa-ming, JIN Yan136-1405Effect of prepared dentin wall on growth of bone marrow mesenchymal stem cells in vitroHUANG Yang, LI Kang-jing, CHENG Wen-xia141-1456Preliminary experimental study of the role of periapical radiolucent areas in root resorption processLI Nan, Tan Guo-qin, WANG Yan-Qing, CAO Jun146-1497Midkine expression in periodontal tissues before and after periodontal treatmentWANG Li, JIAO Xiao-hui, LI Xiao-hong150-1538In vitro study of the effects of silica and fluoride on demineralization of human premolar enamalLIU Zhen-hua, WANG Duo, GONG Yan-hong154-156,1609Biocompatibility evaluation of light-cured nano-hydroxyapatite composite for tooth restorationLI Rui, WANG Qing-shan, ZHAO Meng-meng, WANG Yun157-16010Prevalence of apical periodontitis in an adult Shanghai population ( 159 cases)CHU Min, CHEN Jiong, LIANG Jing-ping161-16311Clinical efficacy evaluation of local administration of minocycline for acute periodontal abscessXU Ping-ping, ZHANG Jin-cai, YUAN Pei-yan164-16612Influence of dentin color changes after bleaching on the color of tooth cervice and tooth bodyQI Xiao-yu, YANG De-sheng, WANG Xiao-xuan, WU Li-hui, ZHANG Hui, AN Ying-jie167-16913Current development of periodontal tissue engineeringSUN Lu170-174,15314Research progress on laboratory assessment of tooth erosionYUAN He175-17815Application of PBL teaching method in clinical training of postgraduate students in operative dentistry and endodonticsZHU Qing-lin, KONG Hui, YU Qing, TIAN Yu, YOU Su-xia179-181,178 