1Reflections on the clinical photographic details of the oral aestheticsLI Yi, LIU FengSYMPOSIUM385-3882Dental photography in orthodonticsJIA Pei-zengSYMPOSIUM389-3933Requirements and protocol for digital photography in dental implant surgeryWU Qing-qing, GONG Ting, GONG Ping, MAN YiSYMPOSIUM394-4004Microscopic photography in dentistryTIAN YuSYMPOSIUM400-4045Study on the adhesive and invasive potential of Porphyromonas gingivalis PG0352 mutant strain interacting with KB cellLI Chen, YANG Xue, LIN Li, PAN Ya-ping, XU Xiao-yu, TONG Tong, GUO YanORIGINAL CONTRIBUTIONS405-4096Study on clinical effectiveness between flap and flapless immediate implant placement in maxillary esthetic zoneYUE Qin, HU Xiu-lian, LIN Ye, CUI Hong-yan, YU Hai-yanORIGINAL CONTRIBUTIONS410-4147Evaluation of the second restoration for upper anterior teeth with apical diseases and compromised fixed prosthesis in short-termWU Wang-xi, CHEN Zhu-su, ZHOU Lei, QIU Jun-qiORIGINAL CONTRIBUTIONS415-4188Study on irrigant and debris extrusion in root canal preparation using rotary nickel-titanium instrument and sonic handpiece in vitroLIU Xin-yang, ZHAN Fu-liang, WANG Xing-boORIGINAL CONTRIBUTIONS419-4229Effectiveness of two nickel-titanium instruments for root canal retreatment in removing filling material in root canals with or without System B heat carrier tips in vitroWU Hong-bin, WU Di, SUN De-gangORIGINAL CONTRIBUTIONS423-42610Clinical efficacy of biofilm in three wall intrabony graft surgery for chronic periodontitisYUAN Hui-juan, DUAN Chang-hua, ZHAI Wei-dongORIGINAL CONTRIBUTIONS427-43011Effect of different concentration of silicon on demineralized enamel remineralization: a scanning electron microscopy studyLI Wen-juan, CHENG Min, TONG Hui-yan, ZHANG Feng-lan, ZHANG YingORIGINAL CONTRIBUTIONS431-43412Advances in caries excavation techniquesNI Jia-wenREVIEW435-43813Oligodeoxynucleotide MT01 and its related research in periodontitisZHOU Yue, YU Hai-jiao, GAO Han, LIU Yin, REN Chun-xiaREVIEW439-441,44614Application of single tooth anesthesia in oral therapyYANG Xia, HOU Rui, XU Guang-jie, XUE PengLECTURE442-44615Report of one case of root canal deviation in dens invaginatus of maxillary lateral incisorWEN Cheng-chao, QIU Li-hongCASE REPORT447-44816@@409 