1Photodynamic therapy in periodontitis and peri-implantitisJING Wu-di, ZHAO Ji-zhiSYMPOSIUM705-7082Application of laser in the diagnosis and treatment of periodontal diseasesQIN Zi-yue, CHEN WuSYMPOSIUM709-7143Prosthesis design and complications of edentulous implant overdenturesPANG Hong-juan, JIANG Lu-lu, ZHAO Bao-hongEXPERT LECTURE715-7204Expression of soluble trigger receptor expressed on myeloid cells-1 in gingival crevicular fluid of different periodontal statusLI Yan-fen, HUANG Yong-ling, XUE Zhen-zhu, HE Meng-jiao, LIU Chong-wu, YAN Fu-hua, LUO KaiORIGINAL CONTRIBUTIONS721-7255Effect of background color of implant abutments and cements color on the color of high-transparent zirconia restorations with various thicknessesLI Xue-jing, PANG Hong-juan, QIU Xiao-hai, ZOU Li-yan, TIAN Si-rui, LYU Ning, ZHAO Bao-hongORIGINAL CONTRIBUTIONS726-729,7376Correlations between maximum mouth opening and severity of traumatic temporomandibular joint bone ankylosis in the sheep modelDENG Tian-ge, WANG Lei, LIU Ping, XUE Yang, LIU Chang-kui, WANG Jing-juan, SUN Xiang-zhao, ZHOU Hong-zhi, DING Yu-xiang, HU Kai-jinORIGINAL CONTRIBUTIONS730-7377Clinical application value of toluidine blue staining in the early diagnosis of oral potential malignant disorders and oral squamous cell carcinomaWANG Qian, XU Si, HAN Ying, JIN Jian-qiu, CHENG Zhe, LIU Xiao-dan, ZHAO Zhong-fang, CUI Hong-mei, LI Wen-wen, GUO Xiang, WANG Xing, LU Ming-xing, LIU Hong-weiORIGINAL CONTRIBUTIONS738-7448Evaluation of the effect of alveolar ridge preservation of concentrated growth factor composite artificial bone materialXU Hai-long, ZHANG Hui, ZHAO Mi, DING Yue, WANG XinORIGINAL CONTRIBUTIONS745-7499Clinical effect of obturator in repairing maxillary dentition defect with maxillary defectLI Lin, LIU Ru-yue, WU Ting, PANG Pai, SUN Chang-fu, ZHANG Zhong-tiORIGINAL CONTRIBUTIONS750-75210Research progress in the methods of mandibular third molar extraction involving inferior alveolar nerveTAN Wen-duo, ZHOU Yi-jia, ZHAO Jun-junREVIEW753-75711Cause of abnormal tongue movement and its relationship with systemic diseasesTAO Hui-qian, DAN Hong-xia, CHEN Qian-mingREVIEW758-76112Prevention and treatment of oral diseases in disabled childrenWANG Shu-fang, ZHANG Lian-pingNATIONAL HEALTH ASSISTING ALL-ROUND WELL-OFF COLUMN762-766 