中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (52): 7851-7857.doi: 10.3969/j.issn.2095-4344.2016.52.014

• 组织工程骨及软骨材料 tissue-engineered bone and cartilage materials • 上一篇    下一篇

3D打印羊椎骨粉/聚乙烯醇支架、纳米级羟基磷灰石/聚乙烯醇支架、羊椎骨粉/聚乙烯醇无孔骨板的性能比较

周琦琪1,韩祥祯1,宋艳艳1,吕明凡2,胡  杨1,何惠宇1
  

  1. 1新疆医科大学第一附属医院口腔修复科,新疆维吾尔自治区乌鲁木齐市  830054;2新疆财经大学金融学院,新疆维吾尔自治区乌鲁木齐市  830012
  • 收稿日期:2016-10-05 出版日期:2016-12-16 发布日期:2016-12-16
  • 通讯作者: 何惠宇,主任医师,教授,硕士、博士生导师,新疆医科大学第一附属医院口腔修复科,新疆维吾尔自治区乌鲁木齐市 830054
  • 作者简介:周琦琪,女,1989年生,新疆维吾尔自治区乌鲁木齐市人,新疆医科大学在读硕士,主要从事口腔修复学及组织工程研究。
  • 基金资助:

    新疆维吾尔自治区科技厅科技支疆项目(201291173)

Performance comparison of 3D printing sheep vertebral bone meal/polyvinyl alcohol scaffold, nano-hydroxyapatite/polyvinyl alcohol scaffold and sheep vertebral bone meal/polyvinyl alcohol nonporous bone plate

Zhou Qi-Qi1, Han Xiang-zhen1, Song Yan-yan1, Lv Ming-fan2, Hu Yang1, He Hui-yu1
  

  1. 1Department of Prosthodontics, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China; 2Financial institute, Xinjiang University of Finance & Economics, Urumqi 830012, Xinjiang Uygur Autonomous Region, China
  • Received:2016-10-05 Online:2016-12-16 Published:2016-12-16
  • Contact: He Hui-yu, Master, Chief physician, Professor, Doctoral supervisor, Department of Prosthodontics, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • About author:Zhou Qi-qi, Studying for master’s degree, Department of Prosthodontics, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Supported by:

    the Scientific Support Program for Xinjiang Uygur Autonomous Region, China, No. 201291173

摘要:

文章快速阅读:

 


文题释义:
羊椎骨粉/聚乙烯醇支架:
羊椎骨粉作为天然的骨质材料,具有其他无机材料所不可比拟的生物相容性和骨传导特性。聚乙烯醇水凝胶是一种在组织工程中应用广泛的高分子材料,作为黏结剂无毒且易降解,机械性能良好,吸水量大,生物相容性好。实验以天然绵羊脊柱松质骨为原料,通过选择化学试剂浸泡法、物理高温煅烧法处理,去除羊松质骨中易引起免疫反应的各种异种抗原成分,制成骨粉,以备与聚乙烯醇水凝胶混合,制成羊椎骨粉/聚乙烯醇组织工程骨支架。
支架微孔结构:支架材料是否能良好发挥其材料性能,合适的微孔结构关是键。孔隙过大易造成支架力学性不良,难以应用于例如牙槽骨等力学要求较高的功能区域;孔径过小会导致新生细胞及组织难以长入。已有研究证实,最小孔径为100-150 µm,即可满足组织再生,并发现支架材料的孔径在300-600 μm间,最有利于新骨长成。

背景:随着3D打印技术的推广,3D打印组织工程骨支架成为颌骨缺损修复的新方向。
目的:对比3D打印羊椎骨粉/聚乙烯醇支架、纳米级羟基磷灰石/聚乙烯醇支架、羊椎骨粉/聚乙烯醇无孔骨板的理化与生物性能。
方法:利用3D打印技术,分别打印出羊椎骨粉/聚乙烯醇支架、纳米级羟基磷灰石/聚乙烯醇支架、羊椎骨粉/聚乙烯醇无孔骨板,进行孔隙率、扫描电镜、吸水率及压缩力学性能测定;将3种支架分别与骨髓间充质干细胞共培养1,4,7 d,采用CCK-8法检测细胞增殖。
结果与结论:①扫描电镜观察:纳米级羟基磷灰石/聚乙烯醇支架、羊椎骨粉/聚乙烯醇支架孔隙规则,网状结构清晰,孔隙间存在广泛交通,连续性好;羊椎骨粉/聚乙烯醇无孔骨板没有明显孔隙,但表面有大小不一微孔,材料致密,分布均匀;②孔隙率:纳米级羟基磷灰石/聚乙烯醇支架孔隙率低于羊椎骨粉/聚乙烯醇支架(P < 0.05);③吸水率:在不同时间点,纳米级羟基磷灰石/聚乙烯醇支架>羊椎骨粉/聚乙烯醇支架>羊椎骨粉/聚乙烯醇无孔骨板(P < 0.05);④压缩力学性能:羊椎骨粉/聚乙烯醇支架的韧性高于纳米级羟基磷灰石/聚乙烯醇支架,低于羊椎骨粉/聚乙烯醇无孔骨板;⑤细胞毒性:羊椎骨粉/聚乙烯醇支架的细胞增殖活性高于其余两组支架(P < 0.05);⑥结果表明:3D打印羊椎骨粉/聚乙烯醇支架具有良好的物理及化学性能。

关键词: 生物材料, 骨生物材料, 组织工程骨, 3D打印, 羟基磷灰石, 羊椎骨粉, 聚乙烯醇

Abstract:

BACKGROUND: With the promotion of 3D printing technology, 3D printing scaffolds for bone tissue engineering have become the new ideas for jaw bone repair.
OBJECTIVE: To compare the physical and biological properties of sheep vertebral bone meal/polyvinyl alcohol (PVA) scaffold, nano-hydroxyapatite (nHA)/PVA scaffold, and sheep vertebral bone meal/PVA nonporous bone plate.
METHODS: 3D printing technology was used to print sheep vertebral bone meal/PVA scaffold, nHA/PVA scaffold, and sheep vertebral bone meal/PVA nonporous bone plate. Porosity, morphology, water absorption rate and mechanical properties of different scaffolds were detected. Three kinds of scaffolds were all used to culture bone marrow mesenchymal stem cells, and cell proliferation ability was detected using cell counting kit-8 at 1, 4, 7 days of culture.
RESULTS AND CONCLUSION: Under scanning electron microscope, the sheep vertebral bone meal/PVA scaffold and nHA/PVA scaffold exhibited regular and interconnected pores with good continuity and clear network structure; the sheep vertebral bone meal/PVA nonporous bone plate had no obvious pores; however, it had dense and evenly distributed micropores with different sizes on its surface. The porosity of nHA/PVA scaffold was lower than that of the sheep vertebral bone meal/PVA scaffold (P < 0.05). The water absorption rate was highest for the nHA/PVA scaffold followed by the sheep vertebral bone meal/PVA scaffold and the sheep vertebral bone meal/PVA nonporous bone plate (P < 0.05). In contrast, the scaffold toughness was highest for the sheep vertebral bone meal/PVA nonporous bone plate, followed by the sheep vertebral bone meal/PVA scaffold and nHA/PVA scaffold. In addition, the cell proliferation activity of cells cultured on the sheep vertebral bone meal/PVA scaffold was significantly higher than that cultured on the other two kinds of scaffolds. Taken together, the 3D printing sheep vertebral bone/PVA scaffold has good physical and chemical performance.

Key words: Hydroxyapatites, Cytotoxicity Tests, Immunologic, Tissue Engineering

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