1Influence of platelet lysate on proliferation and osteogenic/odontogenic differentiation of stem cells from the apical papilla and periodontal ligament stem cells in vitro and in vivo433-439,4522Effects of IL-1β on OPG and RANKL mRNA expression in human periodontal ligament fibroblastsZHANG Lan, SUN Lin-lin, DING Yan, SONG Jian-ling440-444,4573Expression of arginase in periodontal tissues of experimental periodontitis in ratsSUN Ji-jun, WANG Ai-qin, GAO Yan445-4484Experimental investigation of microleakage between restorations and cavity under different light curing modes by confocal laser scanning microscopyZHAO Meng-ming, MA Hui-qiang, LIU Da-yong, JIA Zhi449-4525Cytotoxicity of GuttaFlow on human periodontal ligament fibroblastsMA Zhong-xiong, LEI Li-shan, WANG Yan-huang, ZHONG Sheng453-4576Detection of putative periodontal pathogens in the subgingival plaque of type Ⅱ prediabetes children with gingivitisCAI Liang-jing, TAI Bai-xia, WANG Yong-lan, GUO Hong-lei, ZHU Zhi-ying458-4627The Carabelli's trait on permanent maxillary molars in the Han Chinese middle school students in Urumqi cityLIU Fang, GU Yong-chun463-4658Dental caries and risk behavior factors among 12-year-old children in Dongguan cityXIE Pei-hao, ZHA0 Su-li466-4699Clinical effect of Fluor Protector in relief of dentin hypersensitivity after periodontal surgeryWANG Xiao-hong, SUO Wan-kui470-47210Effect of EDTA as root surface conditioner on the treatment of chronic periodontitisXIAO Yue, RUAN Yi, KONG Xiang-bo, CHEN Jiang-yuan473-47511A new system for denoting toothHAN Yong-zhan, SONG Miao, REN Ju-xiang, WU You-nong476-47912Endotoxin tolerance induced by periodontal pathogensSUN Meng-jun480-48313Diabetic periodontitis and oxidative stressHAN Chun484-48814Effects of problem-based learning in dental practice training: a questionnaire investigationFANG Ming, TIAN Min, JI Zhao-hua, KONG Liang, MA Chu-fan, ZHANG Yu-mei, ZHANG Shao-feng, CHEN Ji-hua489-491