1Brief talk about the correlation between periodontal disease and respiratory diseasesTAN Li-si, PAN Ya-pingSYMPOSIUM129-1332Diabetic periodontitis and vitamin D3ZHOU Xin-yi, WANG Qi, DING YiSYMPOSIUM134-1373Periodontitis and cardiovascular diseaseREN Xiu-yunSYMPOSIUM138-1424Chronic kidney disease and chronic periodontitisZHONG Liang-jun, WANG Yao, ZHANG YuanSYMPOSIUM143-1465Three-dimensional measurement and cluster analysis of temporomandibular joint osseous morphology in the ChineseORIGINAL CONTRIBUTIONS147-1526Study on the application of digital technology to the treatment of dento-maxillofacial deformitiesCHUO Wen-yu, YAN Guang-qi, BAI Xiao-feng, LI Xin, LIU Yi, LU LiORIGINAL CONTRIBUTIONS153-1567Clinical efficacy evaluation of CEREC AC all ceramic onlay minimally invasive restoration for posterior residual teethWEI Zhen-hui, DU Yuan-hong, WANG Wei, ZHANC Jiao, WANG Jin-haiORIGINAL CONTRIBUTIONS157-1608Preliminary study on the relationship between poor oral hygiene and atherosclerosisWANG Bing-na, CHEN Qing, XU Cai-xia, SHI Xue-xue, MA Qian-hui, REN Xiu-yun, ZHOU Tuan-tuanORIGINAL CONTRIBUTIONS161-1659Study on environmental risk factors for nonsyndromic cleft lip and/or palate in Yantai districtDU Ping-gong, XU Da-peng, LIU Shu-tai, YU Jian-bin, LIU Hui, ZHANG Dong-sheng, QU Wei-dongORIGINAL CONTRIBUTIONS166-17010Buccolingual angulations of the maxillary alveolar process measured by CBCTORIGINAL CONTRIBUTIONS171-17711Research progress of clinical treatment for bisphosphonate-related osteonecrosis of the jawGUO Yu-xing, GUO Chuan-binREVIEW178-18112Research progress in tissue engineering repair of the defect of condylar cartilage and bone unitWANG Fei-yu, HE Dong-mei, YANG Xiu-juanREVIEW182-18613Effect of growth factors on proliferation and differentiation of stem cells of apical papillaZHANG Yu, WU Jia-yuanREVIEW187-19014One case report of dens invaginatus of maxillary internal incisorCASE REPORT191-192 