1Progress of the application of endoscope in periodontal therapyTAN Bao-chun, ZHANG Peng, LI Hou-xuan, YAN Fu-huaDigital periodontal diagnosis and treatment385-3912Progress of the periodontal probing technique and its clinical significanceCHENG Yuan, CHEN Bin, YAN Fu-huaDigital periodontal diagnosis and treatment392-3963Occlusal analysis in periodontal therapyLUO Ning, YAN Fu-hua, LI Hou-xuanDigital periodontal diagnosis and treatment397-4024Concept of digitalization in periodontal aesthetic therapyCUI Di, YAN Fu-hua, LI Hou-xuanDigital periodontal diagnosis and treatment403-4065A preliminary clinical and radiographic analysis of implant restoration combined with hard and soft tissue augmentation for maxillary central incisorsWANG Hao-jie, ZHEN Min, HU Wen-jie, WANG Cui, JIA Peng-cheng, XU Tao, LIU Yun-songORIGINAL CONTRIBUTIONS407-4146Effects of cyclosporine A and Porphyromonas gingivalis-lipopolysaccharide on defect repair in periodontal tissue in ratsHUANG Mei-xiang, YAN Fu-huaORIGINAL CONTRIBUTIONS415-4197Osteogenic differentiation, adipogenic differentiation and chondrogenic differentiation of fat tissue-derived human perivascular stem cells.ZHANG Lei, MENG Zhi-zhu, ZHANG BinORIGINAL CONTRIBUTIONS420-4258Multivariate analysis of prognosis of non-surgical treatment for severe periodontitis of anterior teethLIU Pei-cheng, ZHAO Yue, CHEN Chen, SUN Jin-jie, LIN Li, TANG Xiao-lin, LI ChenORIGINAL CONTRIBUTIONS426-4309Effects of removable partial dentures on periodontal status and MMP-8 level in whole saliva of elderly patients with moderate to advanced periodontitis and type 2 diabetes mellitusSU Zhe-jun, WANG Peng, HUO Feng, CHEN Xue, ZHAO Wei-chuanORIGINAL CONTRIBUTIONS431-43410A sampling survey of dental caries in children aged 3 to 5 years old in Liaoning province (2015-2016)ZHANG Kai-qiang, CHENG Rui-bo, LI Jian, LU Zhen-fuEPIDEMIOLOGICAL SURVEY OF ORAL HEALTH435-43811Research progress of relationship between rheumatoid arthritis and periodontitisLI Si-lian, LIU Jing-boREVIEW439-44312Research progress in laser treatment for oral leukoplakiaMA Rui, LIU Yao-ran, ZHAO Ji-zhiREVIEW444-448 