1The study of tooth regenerationYU Jin-Hua, SHI Jun-Nan, JIN Yan367-3712Adhesion and invasion of Fusobacterium nucleatum strains to epithelial cells with the different incubation time in the early stageFEI XIAO-lu, XU Yi, DING Yi, XIAO Xiao-rong, CAI-Wei372-3763Pathological evaluations of shedding teeth of 3 patients with hypoplasia of tooth rootsXUAN Kun, WEN Ling-ying, JIN Yan, YANG Fu-sheng, SHI Li-qiang, Fan Shu-mei377-3824Observation on the morphology of developing plaque biofilm treated with Chinese Gallnut water extractWANG Rui, TANG Rong-yin, LIU Jin, ZENG Zhao-bin, HAN Bing383-3865Effect of changing head position on the electromyogrphy of masticatory musclesMIAO Li, HUANG Fei, ZHANG Jun-hua, CHEN Yong-jin387-3896Comparison of stress distributions in dental roots after root canal preparation with 3 different instrumentsZHANG Na, ZHAO Shou-liang, WANG Sheng-chao, YI Li, TANG Rong-yin390-3937Establishment of improved solid BANA test techniqueYAN Wen-juan, XUE-Yi, LI Xiang-fei, XIN Yu-hua394-3988The effect of surroundings on the color of Dental porcelain with various sizesLU Li, SHI Shen-gen, GAO Cheng-zhi399-4029Color analysis of 792 human maxillary anterior teeth in vivoWANG Cheng-long, YANG Yin, ZHANG Yu, SU Dong-hua, HAN Shu-feng403-40510A clinical evaluation of the frequencies of endodontic interappointment emergencies caused by hand-used Ni- Ti protaper instrument after molar root canal preparationin in the agedCAI Zhi-Bin, DENG Hui, YU Jie406-40811Progress in the study of ADAM28 in the tooth development418-42112The factors of root resorption during orthodontic treatment422-425