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羥基磷灰石／鈦生物功能梯度材料種植體與骨的結(jié)合強(qiáng)度
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TB34

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黑龍江省博士后科研啟動(dòng)金項(xiàng)目資助(2000-45000006)


Bonding Strength of Hydroxyapatite/Ti FGM Implant to Bone
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    摘要:

    采用動(dòng)物兔活體植入與剪切強(qiáng)度試驗(yàn)考察r羥基磷灰石(HA)／Ti生物功能梯度材料(FGM)種植體與頭骨基體的結(jié)合強(qiáng)度。結(jié)果表明，HA—Ti FGM種植體／骨結(jié)合強(qiáng)度隨植入時(shí)間延長迅速增高，其強(qiáng)度值與純HA植入體相當(dāng)而大大優(yōu)于純Ti種植體；植入3個(gè)月時(shí)，HA—Ti FGM與周圍骨組織的結(jié)合強(qiáng)度可達(dá)6．49MPa。剪切斷口形貌表明，F(xiàn)GM種植體斷裂發(fā)生在界面的新骨一側(cè)，說明其界面結(jié)合強(qiáng)度甚至超過了新生骨組織本身的剪切強(qiáng)度。

    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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朱景川 儲(chǔ)成林 尹鐘大.羥基磷灰石／鈦生物功能梯度材料種植體與骨的結(jié)合強(qiáng)度[J].稀有金屬材料與工程,2003,(6):432~435.[Zhu Jingchuan, Chu Chenglin, Yin Zhongda. Bonding Strength of Hydroxyapatite/Ti FGM Implant to Bone[J]. Rare Metal Materials and Engineering,2003,(6):432~435.]
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  • 最后修改日期:2001-11-15
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