The Improved Biological Performance of a Novel Low Elastic Modulus Implant

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	The Improved Biological Performance of a Novel Low Elastic Modulus Implant
	L. Shi; L. Wang; Y. H. Duan; W. Lei; Z. Wang; J. Li; X. L. Fan; X. K. Li; S. J. Li; Z. Guo
	2013
发表期刊	Plos One
ISSN	1932-6203
卷号	8 期号:2
摘要	Background: The mismatch of the elastic modulus between implants and bone tissue can lead to stress shielding, bone resorption and poor osseointegration. Compared with normal bone tissue, this problem is much more serious in osteoporosis. The purpose of this study was designed to find out whether the novel Ti-24Nb-4Zr-7.9Sn (TNZS) implant with low elastic modulus and high strength was suitable for biomedical material, especially in osteoporosis. Methodology: In vitro study, the viability and Alkaline phosphatase (ALP) activity of osteoblasts on the TNZS and Ti-6V-4V (TAV) were observed. In vivo study, 30 adult female New Zealand rabbits were selected and divided randomly into two groups: sham-operation (SHAM, n = 6) and ovariectomised in combination with methylprednisolone treatment (OVX+MP, n = 24). Two implants were then placed in the tibia of each OVX + MP group rabbit, one in each side (left: TAV; right: TNZS). The OVX + MP group rabbits were sacrificed at 4 and 12 weeks after the implantation. The osteoporotic bone responses to the TNZS and TAV implants were evaluated by pull-out test, Micro-CT analyses and histological observation. Principal Findings: Compared with the TAV group, the TNZS group showed a significant increase (P<0.05) in cell viability and ALP activity, new bone formation and pull-out force. Conclusions: The novel TNZS implants show good biological performance both in vitro and in vivo, which suggests that the alloys are suitable for biomedical applications, especially in osteoporosis.
部门归属	[shi, lei ; duan, yonghong ; lei, wei ; wang, zhen ; li, jing ; fan, xiangli ; li, xiaokang ; guo, zheng] fourth mil med univ, xijing hosp, inst orthopaed, xian 710032, peoples r china. [shi, lei] fourth mil med univ, inst implantat, stomatol hosp, xian 710032, peoples r china. [wang, ling] fourth mil med univ, inst hlth stat, xian 710032, peoples r china. [li, shujun] chinese acad sci, inst met res, shenyang 110016, peoples r china. ; guo, z (reprint author), fourth mil med univ, xijing hosp, inst orthopaed, xian 710032, peoples r china. ; guozheng@fmmu.edu.cn
关键词	In-vivo Biomechanical Characterization Biomedical Applications Tissue Differentiation Titanium Implants Mineral Density Dental Implants Shape-memory Bone Loss Rabbit
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71458
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Shi,L. Wang,Y. H. Duan,et al. The Improved Biological Performance of a Novel Low Elastic Modulus Implant[J]. Plos One,2013,8(2).
APA	L. Shi.,L. Wang.,Y. H. Duan.,W. Lei.,Z. Wang.,...&Z. Guo.(2013).The Improved Biological Performance of a Novel Low Elastic Modulus Implant.Plos One,8(2).
MLA	L. Shi,et al."The Improved Biological Performance of a Novel Low Elastic Modulus Implant".Plos One 8.2(2013).