透過您的圖書館登入
IP:3.142.200.226
  • 學位論文

鈣磷酸鹽類之替代骨水泥於不同硬化時間條件下之微結構相變化分析

Phase transformation of calcium phosphate cement bone substitute under different hardening time conditions

指導教授 : 施永勳

摘要


鈣磷酸鹽類骨水泥的成分以鈣、磷為主,與人體的骨骼成分極度近似, 具有相當優良的生物相容性以及適當的機械強度,因為這些材料可在 室溫下自行硬化且具有高度之生物相容性和引導骨組織向內生長之 能力,使骨組織藉由表面遷移而延伸出高度生物相容性,因此可被作 為骨填充物來使用。本研究中,以磷酸鈣替代骨水泥之研究樣品,採 用硬化時間為控制因子,藉由光學顯微鏡(OM)、掃描電子顯微鏡 (SEM)、透射電子顯微鏡(TEM)以及能量色散譜(EDS)的拉曼 光譜儀等分析,為這個新式生物醫學材料磷酸鈣型骨水泥(CPC),硬 化時間和微觀結構,藉以研究探討此骨水泥材硬化時間對微結構改變 之關係,了解CPC 在不同硬化時間下,其材料之微結構相變化過程 情形、建立骨水泥顯微結構與硬化時間之關係。實驗結果顯示;樣品 經不同硬化時間製程後均呈現出多晶之晶體結構,較長硬化時間條件 下可表現出相對較高之緻密結構。

並列摘要


Calcium phosphate cement (CPC) has been used as bone graft substitute for decades and shown great biocompatibility and stable clinical results. The present study will evaluate the phase transformation of CPC using the mixture of mono calcium phosphate monohydrate (MCPM) and CaCO3 under different time conditions. Under these conditions, the microstructure of the cement products after setting is expected to be changed. The physical and chemical properties will be characterized by optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy-dispersive X-ray spectrometer (EDS). The results showed that the polycrystalline crystalline structure can be found under different hardening time conditions. Moreover, the sample with longer hardening time determines higher density

參考文獻


[1] Fernandez, E., F. J. Gil, et al. (1999). "Calcium phosphate bone
cements for clinical applications - Part I: Solution chemistry." Journal
of Materials Science-Materials in Medicine 10(3): 169-176.
[2] Ginebra, M. P., E. Fernandez, et al. (1997). "Setting reaction and
hardening of an apatitic calcium phosphate cement." Journal of Dental

延伸閱讀