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  5. 新型表面處理增進快速骨整合之機制與生物相容性研究
 
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新型表面處理增進快速骨整合之機制與生物相容性研究

Other Title
Research of the new surface treatment to enhance the biocompatibility of rapid osseointegration
Type
thesis
Date Issued
2016-07-07
Author(s)
莊淵仁
Advisor
程瀚毅
Subjects
系所名稱:數位口腔工程產業碩士專班
Description
學位別:碩士
語文別:中文
指導教授:程瀚毅
共同指導教授:
口試委員:林永和;劉沖明
中文關鍵字:膠原固定、生物相容性、人工牙根
英文關鍵字:Col-immobilized, Hemocompatibility, Dental implants
Abstract
本研究利用化學浸泡處理方法讓細胞黏附分子固定在鈦金屬植體表面上,以提高其與人牙周膜細胞(HPDLCs)的生物相容性。其做法為將鈦金屬植體浸泡在1%(V / V)p-vinylbenzoic acid solution 2小時後,再加入carboxyl groups在植體表面上。接著用去離子蒸餾水漂洗後,將鈦金屬植體浸入1.47%含有0.1 mg/ml Gly-Arg-Gly-Asp-Ser (GRGDS),human plasma fibronectin (pFN), 或 type I collagen from calf skin (Col)的1-ethyl-3-(3-dimethylaminopropyl) carbodiimide solution,共價通過形成肽鍵(膠原固定),可以固定在鈦植體表面上的細胞黏附分子。先前研究結果透過X射線光電子能譜分析,顯示細胞黏附分子成功地固定在鈦金屬表面上。另外掃描探針顯微鏡觀察可以得知膠原固定的鈦試片表面比起拋光的鈦試片表面具有更高的粗糙度,pFN固定與膠原固定後的鈦試片表面,其表面培養的細胞比起拋光表面具有較大程度的細胞展延現象(P < 0.05),HPDLCs在膠原固定鈦試片表面顯示比拋光試片、GRGDS固定試片、pFN固定試片,可以讓粘著斑蛋白在細胞突起時更廣泛的展開與延續伸展。
其結果得知成功固定在鈦試片表面上的細胞粘附分子可以改善了與HPDLCs之間的生物相容性。此現象可以應用在牙科植體上,利用膠原固定鈦表面可形成類似圍繞韌帶組織,將此膠原固定後的類韌帶組織包覆植體後植入患處,可強化與細胞組織間的相容性。本研究將此化學浸泡處理方式搭配鈦金屬人工牙根,進行蘭嶼迷你豬口腔動物植牙試驗,在兩週與六週時間點犧牲動物分析其人工牙根骨接觸率與植體螺紋面積計算,其結果顯示膠原固定人工牙根在骨接觸率達81.12%,植體螺紋面積達92.22%。
URI
https://203.71.86.71/handle/123456789/57498

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