1Peri-implantitis: from where to whereWANG Ren, ZHUANG Long-fei, SHI Jun-yu, ZHOU Zhong-hao, LAI Hong-changSYMPOSIUM65-68,742Diagnosis of peri-implantitisZHANG Xi, SU Yu-chengSYMPOSIUM69-743Etiology, diagnosis and treatment of peri-implantitis and peri-implant maintenanceZHANG Yang-heng, DU Zhi-bin, YAN Fu-huaSYMPOSIUM75-794Clinical study of rapid maxillary expansion and maxillary protraction and straight wire appliance technology in the treatment of early permanent dentition with skeletal class Ⅲ malocclusionJIANG Hong-tao, YUAN Gong-jie, YU Wei-juan, LIU-LinORIGINAL CONTRIBUTIONS80-84,885Effects of different root canal preparation methods on the incidence of dentinal defectsCHEN Qing, ZHENG Xiang-qian, WANG Wen-qing, XIAO Peng-xun, YU Jing-taoORIGINAL CONTRIBUTIONS85-886Oral health status of the blind students in Shenyang and the analysis of the influencing factors related to cariesHE Mu, ZHANG Ying, LIU Lu, LEI Shuang, GUO Shi-bo, ZHANG Yu-yu, LU Zhen-fuORIGINAL CONTRIBUTIONS89-927Analysis of three-year clinical effect of PNAM in complete unilateral cleft lip/palateSUN Bing-cheng, KOU Ya-nan, JI Ling-ling, REN Zhan-ping, MA Si-wei, HOU Yu-xiaORIGINAL CONTRIBUTIONS93-95,1008Experimental and clinical research on the effect of fluoride on tooth bleachingPAN Li-feng, AN Jian-ping, ZHOU Wei-bingORIGINAL CONTRIBUTIONS96-1009Clinical application of modified silicone impression technology in complete denturesLIN Xiao-ming, ZHENG MingORIGINAL CONTRIBUTIONS101-10310Application study of digital 3D printing in individual lingual orthodontic bracketsLIN Ze, CHEN Jun, LI XueORIGINAL CONTRIBUTIONS104-10711Assessment of clinical outcomes of fully-customized lingual appliance and labial straight wire appliance using the American Board of Orthodontics-Objective Grading SystemZHOU Lin-xi, ZHANG Gui-rong, YAO Zheng-duo, SHEN GangORIGINAL CONTRIBUTIONS108-11212Research progress of diode laser application in the treatment of periodontitisWANG Yi-yue, LIN Xiao-pingREVIEW113-11613Effect of unilateral posterior teeth loss on morphology of condyleXU Wan-jun, GU Zhi-yuanREVIEW117-12014Research progress of Wnt5a in regulating dental stem cellsLI You-you, LIANG Wen-hongREVIEW121-12415A review of the stability of upper first molar's location in three dimensions during the postretention periodCHEN Yu, QIAN Yu-fenREVIEW125-128 