| 羟基磷灰石／钛生物功能梯度材料种植体与骨的结合强度 |
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| 引用本文： | 朱景川,储成林,尹钟大.羟基磷灰石／钛生物功能梯度材料种植体与骨的结合强度[J].稀有金属材料与工程,2003,32(6):432-435. |
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| 作者姓名： | 朱景川 储成林 尹钟大 |
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| 作者单位： | 1. 哈尔滨工业大学材料科学与工程学院,黑龙江,哈尔滨,150001
2. 东南大学机械工程系,江苏,南京,210096 |
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| 基金项目： | 黑龙江省博士后科研启动金项目资助(2000-45000006) |
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| 摘 要： | 采用动物兔活体植入与剪切强度试验考察r羟基磷灰石(HA)／Ti生物功能梯度材料(FGM)种植体与头骨基体的结合强度。结果表明，HA—Ti FGM种植体／骨结合强度随植入时间延长迅速增高，其强度值与纯HA植入体相当而大大优于纯Ti种植体；植入3个月时，HA—Ti FGM与周围骨组织的结合强度可达6．49MPa。剪切断口形貌表明，FGM种植体断裂发生在界面的新骨一侧，说明其界面结合强度甚至超过了新生骨组织本身的剪切强度。
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| 关 键 词： | 生物功能梯度材料 剪切强度 羟基磷灰石 钛 |
| 文章编号： | 1002-185X(2003)06-0432-04 |
| 修稿时间： | 2001年11月15 |
Bonding Strength of Hydroxyapatite/Ti FGM Implant to Bone |
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| Zhu Jingchuan,Chu Chenglin,Yin Zhongda.Bonding Strength of Hydroxyapatite/Ti FGM Implant to Bone[J].Rare Metal Materials and Engineering,2003,32(6):432-435. |
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| Authors: | Zhu Jingchuan Chu Chenglin Yin Zhongda |
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| Abstract: | The bonding strength of hydroxyapatite(HA)/Ti FGM implants fabricated by powder metallurgy was investigated by means of the in vivo implanting in rabbits and the shear strength testing. It was shown that the HA/Ti FGM possess a good biocompatibility and osteoconductivity, and can be integrated with bone. After implanted for three months, the FGM implants and the new bone formed around became one bony body. The bonding strength between FGM implants and the surrounding bone tissues raises quickly with increasing the implanting time, and can reach 6.49MPa after implanted for three months, higher than that of dense pure HA or Ti implants. Fractography observations reveal that the fracture occurred in the new bone near the interface during the shear testing of HA/Ti FGM implants, which indicates that its interfacial bonding strength even exceeds the shear strength of new bone tissues. |
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| Keywords: | functionally gradient biomaterial shear strength hydroxyapatite titanium |
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