臺灣博碩士論文加值系統

當牙齒或牙髓發炎壞死時，臨床上牙醫師會先去除牙髓組織，將牙根管清理後再密集的做根管治療處理，治療牙根尖端感染的區域，以緩解患者的疼痛，後續進行義齒安裝的動作，根管治療後的牙齒支撐力會降低，因此需要在治療的牙齒內放置柱心體用來提高牙齒強度。傳統使用金屬或玻璃纖維來作為柱心體的材料，因現今氧化鋯具有高透光性、美觀性、生物相容性好和抗斷裂強度高等特點，在牙科治療使用X光時，氧化鋯材在X光片上的不透明顯示，可以幫助判斷是否有再發性齲齒的情況。氧化鋯陶瓷製作的復型物，在牙科越來越普遍，但氧化鋯陶瓷和牙齒之間的鍵結，尚未研究出一個最佳的黏結程序。在這項研究中計畫使用臨床常用的，不同品牌氧化鋯製成的試片，評估各材料表面特性，將表面形貌與表面元素做分析，並加入表面改質的處理，各組進行黏著強度的比較。本研究將臨床常用的不同品牌之氧化鋯表面特性進行比較與分析,表面條件的不同是否與黏著強度影響有關。實驗將氧化鋯瓷盤經由電腦輔助設計與製造技術製成固定尺寸的試片，分成無表面處理之氧化鋯試片及經氧化鋁顆粒噴砂處理之氧化鋯試片，分析表面粗糙度及硬度，以電子顯微鏡觀察試片表面型態與元素組成，將試片與人類牙齒黏結以評估不同氧化鋯特性與黏著劑之間結合力的影響，最後以人工老化評估材料的穩定性。研究結果顯示經過噴砂表面處理後，氧化鋯試片表面粗糙度均有增加，但表面微硬度下降。剪切測試後發現，表面晶粒尺寸對黏著強度沒有太大的影響，而氧化鋯表面的立體型態，可以提高黏著強度，其中T-H組使用噴砂的表面處理後，增加黏著強度的效果最佳。經過兩萬次老化處理後，各組剪切強度均有下降。經由元素分析發現碳的比例偏高，可利用碳元素進行化學鍵結，以得到更高的黏著強度。剪切測試後觀察到黏著劑跟牙齒的鍵結強度低與牙齒分離面平滑。得到結論：黏著失敗的原因，是在黏著劑與牙齒表面之間的黏結，所以進行黏著程序時牙齒應該也要做處理，來增加黏劑與牙齒間的鍵結。

Clinically, when the teeth pulp necrosis or inflammation, dentist removes the pulp tissue, after root canal debridement and expand, and then do dense root canal filling, and installing crowns, dental patients to relieve pain and cure the root infection tip region. Lack of teeth will support force after root canal therapy, therefore, additional support was need since the installation root stem crown. The traditional root stem made is metal or glass fibers, zirconia having high light resistance, aesthetics, good biocompatibility and high tearing resistance and other characteristics, showing the X-ray opacity photography help identify recurrent caries. Zirconia ceramic dental prosthesis becoming more common, but the bond between the ceramic and the tooth has not developed an optimal bond program. In our study, use a different brand of zirconia surface-modified produce test pieces. The material properties for evaluation, comparison between the surface morphology and elemental analysis. In our study, the use of different zirconia ceramic discs and cut into a fixed size (10mm x 10mm x 2.5mm) by computer-aided design and manufacturing (CAD/CAM) process, sintered at 1450

中文摘要…..……………………………………………………………………………..…….… i　　
英文摘要…..……………………………………………………………………………..…….… ii　　
致謝…..………………………………………..………………………….………..……………. iii　　
目錄…..…………………………………………………………….…………...……………...… iv
表目錄…..…………………………………………………………..….……..…….................... vi
圖目錄…..………………………..…………………………………....………………………… vii
中英縮寫表.………………………………………………………..….….………………….... viii
第一章 緒論…..…………………………………..………………………………………...… 1　　
1-1 研究動機…..…………………………………………..……………………………...… 1　　
1-2 文獻回顧…..……………………………………..……………………………………...　 2
1-2-1 氧化鋯及穩定化氧化鋯.……………………..…………………………….…　 2
1-2-2 生醫材料與牙科醫療應用.………………..…………………………………　 3
1-2-3 人工牙冠.…………………………..……………..………………………………　 4
1-2-4 根心柱.…………..……………………………………………………………...…　 5
1-2-5 電腦輔助設計製造.…………..……………………………………………...…　 5
1-2-6 氧化鋯與黏著劑鍵結.…………..………………………………………..……　 6
1-2-7 氧化鋯表面處理方法.…………..……………………………………..………　 7
1-2-8 人工老化模擬.…………..…………..………………………………...………　 10
1-3 研究目的…..……………………………..…………………………………..…………　 11
第二章　　材料與方法…..…………………………………..………………..……………　 12
2-1 研究流程圖…..……………………………..…………………………………………　 12
2-2 實驗材料…..……………………………………..……………………….……………　 13
2-3 實驗儀器…..……………………………………..……………………….……………　 16
2-4 氧化鋯試片製備…..………………………………………………..…..……………　 17
2-5 表面改質…..…………………………………………….……….……….……………　 18
2-6 試片表面性質…..……………………………………………………...………..……　 19
2-6-1 表面粗糙度…..………………………………………………...…..……………　 19
2-6-2 微小硬度…..………………………………………………….….………………　 19
2-6-3 掃描式電子顯微鏡分析…..……………………………………….…………　 19
2-6-4 表面元素分析……..………………………………..………………..…………　 20
2-7 人齒試片製備…..…………………………………………..……………...…………　 21
2-8 試片黏結…..……………………………………………………..……….……………　 23
2-9 剪切測試…..…………………………………………..………………….……………　 24
2-10 冷熱循環測試…..…………………………………..………………….……………　 25
2-11 統計分析…..…………………………………………………………….……………　 25
第三章　　結果與討論…..……………………………………..………………..…………　 26
3-1 試片的表面性質…..………………………………………………..………..………　 26
3-1-1 表面粗糙度…..………………………………………………………….………　 26
3-1-2 微小硬度…..……………………………………………………………..………　 28
3-1-3 表面型態與晶粒尺寸…..……………………………………………..………　 30
3-1-4 元素分析…..………………………………………………..……………………　 33
3-2 剪切測試…..…………………………….…………………………………..…………　 35
3-3 表面型態…..………………………………………………….……………..…………　 38
3-3-1 表面處理後型態…..……………………………………………………………　 38
3-3-2 原始試片剪切測試後型態…..………………………………………………　 38
3-3-3表面處理後剪切測試…..………………………………………………………　 38
3-3-4表面處理與冷熱循環後剪切測試…..………………………………………　 38
第四章　　結論…..……………………………………..……………………………………　 43
第五章　　參考文獻…..…………………..………………………………………………..　 44

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