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  3. .博碩士學位論文
  4. .96學年度
  5. 以表面處理對迷你骨釘作為矯正錨定時機械性質及顯微結構對其周圍骨整合之機制研究
 
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以表面處理對迷你骨釘作為矯正錨定時機械性質及顯微結構對其周圍骨整合之機制研究

Other Title
The study of mechanical and microstructure variations of mini-implants for orthodontic anchorage with surface treatments
Type
thesis
Date Issued
2008-05-29
Author(s)
鄭信忠
Advisor
李勝揚
Subjects
系所名稱:牙醫學系碩博士班
Description
學位別:博士
語文別:英文
指導教授:李勝揚
共同指導教授:歐耿良
口試委員:高嘉澤;潘永寧;林哲堂
中文關鍵字:鈦;氫化鈦;奈米;陽極處理;陰極處理;迷你骨釘
Abstract
由於鈦金屬表面會生成一氧化層,使鈦金屬及其合金具極佳的生物相容性,研究指出植體表面氧化層厚度與孔徑大小對於細胞初始的攀附行為、增殖及分化有密切的關係。但因鈦金屬植體表面之機械性質與原生骨組織仍有差異,導致植體植入後可能發生因應力遮蔽效應所產生的骨質吸收問題。若能於植體表面氧化層製作奈米網狀多孔性結構,除將有助於細胞攀附、增殖及分化外,亦可有效降低鈦植體表面之楊氏係數,避免應力遮蔽效應發生,達到更趨完善的骨整合效應。
本研究以電化學陰極處理方式使鈦基金屬表層形成一層氫化鈦薄膜,再以電化學陽極處理,使表面形成一層三維網狀奈米多孔性二氧化鈦結構,佐以物理及化學性的分析儀器測試表面之成分、元素、膜厚、孔洞大小及結構,探討奈米網狀多孔性二氧化鈦之形成於鈦金屬表面楊氏係數及應力遮蔽效應的影響。研究結果顯示網狀奈米多孔性二氧化鈦結構可將鈦金屬表面楊氏係數降低至與骨組織相近;臨床研究結果顯示,經過表面處理之植入物,成功率明顯較未經過處理高,顯示本研究所提出之表面處理程序可有效增進鈦金屬之生物力學相容性,進一步改善骨組織癒合能力。
URI
https://203.71.86.71/handle/123456789/12540
https://hdl.handle.net/11296/dngp3g
File(s)
No Thumbnail Available
Name

C0187305.pdf

Size

16.12 MB

Format

Adobe PDF

Checksum

(MD5):be03d49fd081347855f98624905fdc9c

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