1Protocols of treatment and maintenance of peri-implantitisLIU Qian, PI Xue-min, LU Yang-ning, WANG Lu, SU Yu-chengSYMPOSIUM257-260,2642Application of dental laser in peri-implant infectionsCHEN De-ping, LIN Ting, ZHAO Yang, SU Yu-chengSYMPOSIUM261-2643Consideration of surgical treatment for peri-implantitisPI Xue-min, LIU Qian, LU Yang-ning, WANG Lu, SU Yu-chengSYMPOSIUM265-2684Study on the effect of CPC collagen scaffold combined with P substance on the characteristics of rats BMSCsMO Jing-zhen, ZHANG Shu-yin, ZHOU Hong-zhi, HU Kai-jinORIGINAL CONTRIBUTIONS269-2735Restoration effect of residual crown using inlay and post core crown in different degree of defectLIU Wei-li, SUI Li-naORIGINAL CONTRIBUTIONS274-2776Clinical accuracy evaluation of dental implant surgical guide based on stereoscopic techniqueHU Xiang-gang, JIA Lie-ni, WANG Wei, XIE Qiao, JIA JunORIGINAL CONTRIBUTIONS278-280,2857Evaluation of the clinical effect of pit and fissure sealant on first permanent molar for the prevention of caries and analysis of the risk factorsGUO Shi-bo, ZHANG Ying, HE Mu, LEI Shuang, LU Zhen-fuORIGINAL CONTRIBUTIONS281-2858Clinical analysis of the curative effect of 2-dimensional lingual brackets self-ligating technique in the treatment of malocclusion of adultsRONG Xiao-fang, ZHANG Dong-liang, ZHOU Xiao-bo, MA Suo-nan, HAN Qi-yiORIGINAL CONTRIBUTIONS286-2889Study of buccolingual angulations of the mandibular alveolar process by CBCTORIGINAL CONTRIBUTIONS289-29410Establishment of a new animal model of trigeminal neuralgia produced by compression of the trigeminal ganglion in SD rats and the study on its roleGUO Yong-feng, DING Chun, LI Ming-zi, SUN Ning-ning, ZHU Bing-jie, ZHOU QingORIGINAL CONTRIBUTIONS295-29911A finite element analysis of the stress distribution in platform switching configuration implants with different crown root ratiosORIGINAL CONTRIBUTIONS300-30312Progress in the research of microleakage of composite resin in restoring class Ⅴ cavitiesZHU Zheng, ZHU Ya-qinREVIEW304-30713Research progress of Porphyromonas gingivalis infection on mediation of apoptosis in host cellsZHOU Jie, PAN Ya-pingREVIEW308-31114Effect of SDF-1 in oral tissue repairZHANG Kai-qi, CUI Jun, LI Zhao-yuanREVIEW312-31415Orthodotic treatment for lateral complete cleft lip and palate combined with open bite and malocclusion:one case reportZHAN Hui, LUO Jun, LI Zhi-hua315-31716Report of one case of ankylosed teeth in the anterior teethQIN Hang-lin, XING Xiu-jin, ZHOU Hang318-320 