以奈米壓印表面處理改變矯正橡皮鏈之物理性質及生物相容性研究

The physical properties and biocompatibility of orthodontics elastomeric chain after nanoimprint surface treatment

林婉婷(Wan-Tin Lin)

指導教授 ： 鄭信忠

共同指導教授 ： 沈永康(Yung-Kang Shen)

臺北醫學大學/口腔醫學院/牙醫學系碩博士班/碩士(2013年)

https://doi.org/10.6831/TMU.2013.00108

摘要

傳統的矯正用橡皮鏈主要由多分子結構組成，容易有些缺點包含因吸收水分而降低彈性或色素沈積而影響美觀等，本篇研究的主要目的是希望藉由奈米化的表面改質可以改善其缺點及改質後的物理性質變化。
在本篇先驅實驗中我們使用陽極氧化鋁作為壓印模板利用熱壓印原理在矯正用橡皮鏈表面形成奈米結構，並探討不同的壓印參數：壓印溫度、壓印時間、壓印壓力、及脫模時間對於壓印結果所造成的影響並進一步測事橡皮鏈在押印之後的物理性質。
實驗結果顯示在適當的壓印參數下我們可以藉由奈米熱壓印方法在矯正用橡皮鏈表面產生奈米結構讓其表面性質由親水性更傾向於疏水性，吸水量也變得較少，然而隨著壓印溫度的增高矯正用橡皮鏈的變形量也隨之增加，因此在未來的實驗中我們必須尋求更好的壓印參數或壓印方法藍減少變形量，並進一步的進行相關之動物及臨床實驗，以期應用於臨床矯正治療中。

關鍵字

矯正橡皮鏈 ； 奈米壓印 ； 表面改質 ； 玻璃轉移溫度

並列摘要

The traditional orthodontic power chain, usually made of polymer materials, exists some drawbacks as the followings that reduce of elasticity due to swell after absorbing water and surface discoloration resulted from the patient's diet, food or beverage colors leading to poor appearance. The main purpose of this study was to develop surface modification on orthodontic power chain and to realize the properties change for improvement of its shortcomings.
In this pilot study, a template produced by pure aluminum piece with anodized production (concave) through the nanoimprint process fabricating nanostructures (convex) on the surface of power chain, resulting in surface modification of power chain. The different nanoimprint process parameters (e.g. nano-imprinting temperature, nano-imprinting pressure, nano-imprinting time and de-molding temperature) are used to produce nano-structures on the surface of power chain. This research will analyze and discuss the change of the power chain properties (e.g. surface properties, water absorption, distortion, and color stain, SEM observation) between before and after the surface modification.
The results of this study show that the contact angle of the power chain became larger after nano-imprinting surface treatment. The hydrophilic properties of power chain have been turn into hydrophobic properties. Unmodified power chain before water absorption is about 4%, while a modified water-absorbent about 2-4%. The distortion degree of modified power chain is increase with the nano-imprinting temporary . Modified power chain color adhesions are also less than the modification before.
In summary, power chain has very different surface properties after surface modification. This study will continue to explore the power chain modified front and rear of the cell culture and animal experiments. The further clinical studies and application will be performed in the future.

並列關鍵字

orthodontic elastomeric chain ； nanoimprint ； physical properties

參考文獻

蔡吉陽, 楊., 歐耿良, 高俊義, 王益暉, 李勝揚,鄭信忠. (2005). 以動物實驗評估經陽極表面處理微型骨釘之癒合效果與穩固度. 中華牙醫學雜誌(1), 149-157.

鄭信忠, 陳., 謝家倫, 蔡明宏, 歐耿良, 李勝揚，施永勳. (2007). 鈦基植體表面生成奈米多孔姓二氧化鈦層之機制研究. 中華牙醫學雜誌(26), 26-32.

Master Thesis

The physical properties and biocompatibility of orthodontic

The physical properties and biocompatibility of orthodontics elastomeric chain after nanoimprint surface treatment