1Inhibitory effects of Fructus oryzae germinates crude extracts on Streptococcus mutansSHAO Xu-yuan, YU Xiao-feng, FENG Yan, LIN Ting, SU Bo-hua, LU You-guang121-1242c-Jun regulates amelotin gene expression in ameloblasts125-1293Isolation and identification of stem/progenitor cells from granulation tissue in human periodontitisTAN Jun, ZHOU Li-hua, ZHOU Yang, DING Ao, DONG Guang-ying, WANG Xin-wen, WANG Qin-tao130-1334Changes of IL-1β and sICAM-1 levels in gingival crevicular fluid under different orthodontic forcesCHAI Yuan, YANG Jun-xing, XU Hai-ling134-1375Finite element analysis of three NiTi Endodontic instruments under bending and torsional conditionsCHEN Lu, WU Bu-ling, GAO Jie, SHAO Long-quan, CHEN Min138-1416A photoelastic stress analysis of stresses between the root canal instruments and the root canal wall during preparation of the curved root canalGUAN Qing, SONG Fang, GU Yong-chun, HU Na, DENG Ting-ting, Ni Long-xing142-1457Establishment of the mandibular edentulous photoelastic model of various retention mechanism on implanted complete overdenturesSONG Fang, ZHANG Shao-feng, BAI Shi-zhu, GUAN Qing146-1488Effects of nicotine on the production of MMP-1,3 in human periodontal ligament cellsSHEN Shu-ning, ZHOU Wei, Tatsuro Fukuyama, WANG Xiao-jing149-1539Effects of aqueous extract of 5 kinds of Chinese traditional medicine on the growth of Streptococcus mutans in vitroFAN Cong, UU Ying, YANG Sheng-hui, HOU Ben-xiang154-15710Antibacterial effects of a pit and fissure sealant incorporating a quaternary ammonium monomerLI Feng, CHEN Ji-hua, WU Dan, LI Fang, GAO Jing, FANG Ming158-16211The effect of irradiation on microhardness and microstructure of tooth hard tissueXIANG Rong, XU Qian, FENG Qing, CHEN Wen-xia163-165,15312Effect of humidity on dimensional accuracy of polyether impression materialsLI Dan, XU Fang-li, HE Hui-ming166-168,15313An investigation of enamel thickness in maxillary second premolars of people about 3 000 years ago unearthed from ShaanxiMENG Lei, SHAO Jin-ling, DUAN Xiao-hong, LIU Dai-yun, DENG Bang-lian, WANG Pei-huan169-17114Study on caries activity of preschool childrenZHOU Yan, HONG Jian-ping, CHEN Hua-qing172-17415Papillon-Lefèvre syndromeCHEN Yuan-jiao, LIU Min-chuan175-17816Endodontic treatment of mandibular second premolar with three root canals using dental operating microscope:A case reportZHANG Zhong-xing, ZHOU Lin179-180 