1Early diagnosis and treatment of impacted incisorsLIU HeSYMPOSIUM513-5152Research situation of amelogenesis imperfectaWANG Xin, ZHAO Yu-mingSYMPOSIUM516-518,5223Diagnosis and treatment of dens invaginatusMA Xue-juan, CHEN XuSYMPOSIUM519-5224Clinical management and the possible early orthodontic intervention of impacted anterior dilacerated teethLI Xiao-bingSYMPOSIUM523-5275Surgical therapy of the dental developmental anomaliesSONG Guang-tai, JIN Qiu-chen, DING Jie, KANG HuiSYMPOSIUM528-5316Analysis of short-term clinical efficacy of the combination of bone splitting, bone condensing, guided bone regeneration technology and simultaneous implantation surgery programORIGINAL CONTRIBUTIONS532-5377Comparison of diode laser and rhEGF gel in the treatment of recurrent aphthous ulcer.PENG Chuan-yang, ZHANG Ying, JIANG Ai-jiaORIGINAL CONTRIBUTIONS538-5418Clinical effect of different casting fixed function appliances for skeletal Class Ⅱ malocclusionYI Juan, XIAO Xiu-feng, YEWENG San-jieORIGINAL CONTRIBUTIONS542-5449Postoperative responses to single-visit root canal treatment for mandibular first molar with Reciproc and Mtwo instrumentZHANG Feng-ge, LIN Juan, XUE Chang-ao, LUO Ning, HANG Zheng-xian, RUI NaORIGINAL CONTRIBUTIONS545-54710Study on the expression of p16 protein in maxillary sinonasal squamous cell carcinomaMENG Chao, YAN Ai-huiORIGINAL CONTRIBUTIONS548-550,55611Syndromes associated with tooth agenesisZHU Shu, SHENG Wei, CHEN XuLECTURE551-55612Research advances on the tissue engineering technology in periodontal ligament regenerationXIA Shang, JIANG Li-ming, CHEN XuREVIEW557-56013Research progress of the mechanism of P.gingivalis-induced dysbiosis in the pathogenesis of periodontitisZHANG Guang-yu, LIN LiREVIEW561-56514Study on the anatomic measurement of temporomandibular joint osseous structureZHANG Lu-zhu, CHANG Yu-si, HE Dong-meiREVIEW566-56915Research advance of influence of sodium hypochlorite on dentin bondingMA Nan, QIU Li-hongREVIEW570-57316@@574-57617@@527,537 