1Porous beta-tricalcium phosphate bone graft fusion for repair of degenerative lumbar spondylolisthesis：a comparison of vertebral fusion ratesviadifferent apprachesMu Yong-jie, Zhang Jie-he, Shen Song-chao, Feng Bo-zhi5413-54172Effect of bone cement amount on adjacent vertebral endplate during percutaneous kyphoplasty：a finite element analysisZhang Dang-feng, Ma Wei, Ge Zhao-hui, Zhang Fei, Zeng Si-xiang5418-54223Biological characteristics of a novel pourable pedicle bone cementMa Jiang-wei, Liu Lie-dong, Du Geng, Gao Guang-ming, Liu Yu5423-54274Femtosecond laser promotes the proliferation and differentiation of human gingival fibroblasts on pure titanium surfaceLi Ju, Dong Xiu-hua5428-54325Clinical trial of collapsed repair andin vitro tensile strength testWang Xing, Qi Lu, Gu Zhen-yu, He Hui-yu5433-54376Apexification of immature permanent teeth with calcium hydroxide pasteNie Er-min, Lu Jie, Jiang Rui, Zhang Chun-yuan, Zeng Jin-di, Tan Ji-zhou5438-54427Self-adjusting files, ProTaper Next and ProTaper Universal：a comparative study of root canal cleanness and the amount of apically extruded debris during root canal preparationWu Wan-cui, Chen Guang-sheng5443-54478Antimicrobial properties of TiO2-xNx antibacterial bracketWang Jian-wei, Wang Pu, Lin Bing-peng, Cao Bao-cheng5448-54529Safety of BLB implant denture：immediate implantationversus delayed implantationYang Shu5453-545710External use of recombinant human granulocyte-macrophage colony stimulating factor hydrogel to repair thick skin graft donor sitesLi Chao, Li Shou-ju, Li Yong-tao, Fu Zi-yang, Ren Chang-yin5458-546211Nano-hydroxyapatite/polyamide 66 composite for repair of early femoral head necrosisYang Ming-min, Li Dai, Sun Yang5463-546712Application of nano-artificial bone in anterior cervical fusionLiu Xing, Tian Li-jun, Deng Zhi-gang, Guo Yu-song5468-547213Biocompatibility of a new titanium alloy containing copperRen Bao-rui, Liu Jie, Zhang Er-lin, Dong Hui5473-547914Biocompatibility of poly-L-lactic acid, a new synthetic material for skin burnDeng Li-huan5480-548415Biological safety of hydrophobic acrylic foldable intraocular lensDuan Xiao-jie, Jiang Bao-guang, Wang Zhao-xu5485-549016Computer-aided design/computer-aided manufacturing of zirconia all-ceramic crowns：stability and biocompatibilityLi Shuang5491-549517Vascular grafts made of expanded polytetrafluoroethylene for repair of peripheral arterial injuriesZhang Han-jiang, Wang Zhi-wei5496-550018Biodegradable sirolimus eluting stents in coronary artery stenosis：a safety evaluationChi Xin-dong, Mayinuer Simailahong, Gan Qing-lei, Yang Na5501-550519Cellular immune response and immune toxicity to BALB/c mice for animal-based collagenLei Jing, Li Yi-heng, Liu Xu-zhao, Tang Shun-qing5506-551220Biomaterial repair combined with continuous lumbar subarachnoid drainage for management of cerebrospinal fluid leakage and meningitis after spinal surgeryZhou Gang, Zhang Yu-kun, Huang Wei-min, Wang Cheng-wei5513-5517 