1Diagnosis criteria of advanced periodontitis and definition of periodontitis progressionLI Hou-xuan, YAN Fu-huaSYMPOSIUM193-1962Non-surgical therapy in advanced periodontitisCHEN Bin, YAN Fu-huaSYMPOSIUM197-2013Basic principle of clinical decision on surgical therapy for advanced periodontitisZHANG Xuan, LIU Yu, YANG Jie, YAN Fu-hua, SUN Wei-binSYMPOSIUM202-2044Research progress of pulp treatment in advanced periodontitisTAN Bao-chun, ZHONG Quan, YAN Fu-huaSYMPOSIUM205-2085Application of autologous growth factors to advanced periodontitisLIN Min-kui, LIU Juan, YAN Fu-huaSYMPOSIUM209-2136Influence of osteotome sinus floor elevation in conjunction with implant placement on sinus membraneQIN Lei, LIN Sheng-xiao, ZHAO Ning-bo, XIE Chao, SONG Ying-liang, LI De-huaORIGINAL CONTRIBUTIONS214-217,2237Preparation of bioactive composite layers by loading collagen and 20α-hydroxycholesterol on the surface of apatite-coated Titanium substratesZHU Jing-tao, LIU Fan, CUI Fu-zhai, LIU YiORIGINAL CONTRIBUTIONS218-2238Retrospective study of the osteotome sinus floor elevation for implantation restoration in the upper posterior area when residual bone height is less than 5 mmORIGINAL CONTRIBUTIONS224-2279Osteoplastic effect of collagen membrane combined with recombinant human bone morphogenetic protein-2 on rabbit guided bone regeneration modelLAI Chun-hua, ZHOU Lei, NING Hui-li, ZHANG Di, ZHOU Zhen, YANG ShuoORIGINAL CONTRIBUTIONS228-232,23610Evaluation of the effect of fluoride varnish in preventing caries of deciduous molar in preschool childrenZHANG Yu-yu, ZHANG Ying, HE Mu, LEI Shuang, LU Zhen-fuORIGINAL CONTRIBUTIONS233-23611Research progress of the development, progression and treatment of furcation involvementsMENG Yang, WANG Wan-chun, LUAN Qing-xianREVIEW237-24212Research progress in measuring methods of tooth mesiodistal angulationYAO Zheng-duo, ZHOU Lin-xi, SHEN GangREVIEW243-24613Research advances in antibacterial property and biological activity of the trace element copperLI Yue, ZHAO Bao-hongREVIEW247-25114Report of one case of skeletal Class Ⅲ crossbite complicated by open-bite treated with maxillary implant anchorage Class Ⅲ tractionCASE REPORT252-25415Report of one case of retreatment for missed second mesiobuccal canal of maxillary first molarLIU Ce, QIU Ning, XUE MingCASE REPORT255-256 