臺灣博碩士論文加值系統

三氧礦化物(Mineral trioxide aggregate, MTA)已被廣泛應用於牙齒和骨頭修復之領域。過去本實驗室已成功開發出新型鈣矽根管填充材料(novel Ca-Si root-endfilling material, CS)。CS和MTA組成相似，具有良好的生物相容性與封閉性質，硬化時呈現高鹼性且具有一定之強度，操作上不需特殊儀器，並且可藉由成分添加比率的不同來改變材料之物化性質，缺點則是硬化時間太長。本研究以10%氯化鈣溶液來調拌CS，成功地縮短其硬化時間，以改善操作性質。
首先，探討CS與MTA之水合反應。藉由SEM顯微結構、XRD晶相分析與FT-IR吸收光譜分析結果證實，CS之水合反應和MTA相似，由C3S主導其水合反應，而產生最終產物calcium silicate hydrates (C-S-H) 和Portlandite(氫氧化鈣)。其次，探討CS在模擬體液環境下，SEM觀察到CS材料表面附著類似類氫氧基磷灰石(HAp)結構，經SEM-EDS鑑定Ca/P大於1.67，而XRD分析發現低結晶性之HAp繞射峰出現，FT-IR顯示-PO43-之吸收光譜，同時ICP-AES檢測到環境之磷離子大量被消耗，證明材料具有生物活性(bio-activity)。
最後，使用老鼠前驅骨細胞MC3T3-E1為生物相容性測試模型，評估鈣矽材料之生物相容性與誘導骨細胞礦化表現(mineralization)。細胞毒性分析發現，毒性尚小。SEM顯示，CS和MTA具有很好的細胞貼附行為，經由Alamar Blue測試、細胞鹼性磷酸酶活性分析和礦化染色得知，有助於骨細胞增生、分化與基質生成。因此，綜合總結之實驗結果，CS具有很好的生物相容性、生物活性及骨誘導能力，為一具有潛力應用於牙髓修補之填充材料。

Mineral trioxide aggregate (MTA) has been widely used in the area of dental and orthopedic rehabilitation. Our laboratory has previously reported to successfully develop a novel calcium silicate root canal filling material (Ca-Si root-end filling material, CS). With a similar composition to the conventional commercialized MTA, CS can be easily operated without the need of special equipment. It generates a great amount of alkaline during setting, and shows good mechanical strength and sealing properties, in addition to good biocompatibility after setting. CS can also be easily modified its physical and chemical properties by adding different chemicals. However, its setting time is still too long in clinical practice. In this study, we used 10% calcium chloride solution instead of water in our CS. We successfully reduce its setting time and therefor improve its operability.
The hydration products of CS were calcium silicate hydrates (C-S-H) and Portlandite by the analyses of XRD, FT-IR and SEM evaluations. C3S was the main peak during the reaction of CS hydration. When immersing CS into simulated body fluid (SBF), appetite emerged on the surface of CS observed by SEM and XRD analyses. PO4 was shown in the FT-IR analyses. The phosphate in solution was almost totally consumed confirmed by ICP-AES. The emergence of appetite rendered CS the properties of bioactivity.
We used mouse bone cells MC3T3-E1 to assess the biocompatibility of CS with induced expression of bone cell mineralization. Cytotoxicity of CS was negligent. Bone cell proliferation, differentiation, matrix formation and alkaline phosphatase activity were assessed by Alamar Blue test to know if it can support mineralization. SEM showed that CS has good cell attachment behavior superior to MTA. Therefore, CS has good biocompatibility, bioactivity and osteoconduction, as a potential material for restorative endodontic used.

誌謝 .I
中文摘要 II
英文摘要 III
目錄 IV
圖目錄 VIII
表目錄 XIII
英文縮寫 XIV
前言 1
1.根管治療與牙根穿孔修補材料之重要性 2
2.研究目的 2
3.研究假說 3
4.論文架構 3
第一章 鈣矽材料水合產物之物化性分析 4
1.1 研究背景 4
1.1.1 根管填充材料................................................................................ 4
1.1.2 Mineral trioxide aggregate................................................................5
1.1.3 研究目的.........................................................................................6
1.2研究材料與方法 7
1.2.1 實驗材料.........................................................................................7
1.2.2 實驗儀器.........................................................................................7
1.2.3 新型鈣矽填充材料之組成與製備...............................................7
1.2.4 X光繞射分析儀..............................................................................8
1.2.5 傅立葉紅外線吸收光譜分析儀.....................................................8
1.2.6 硬化時間測試................................................................................8
1.2.7 對徑壓縮強度測試........................................................................ 9
1.2.8 pH變化......................................................................................... 9
1.2.9感應耦合電漿原子發射光譜分析儀...........................................9
1.2.10掃描式電子顯微鏡/能量光譜分析儀............................................9
1.3實驗結果 11
1.3.1 CS和MTA材料粉末性質分析.....................................................11
1.3.2 CS和MTA水合後之X光繞射分析.............................................11
1.3.3 CS和MTA水合後之FT-IR吸收光譜分析.................................11
1.3.4 CS和MTA水合後之離子釋放與pH值變化分析.......................12
1.3.5 CS和MTA硬化時間測試分析.....................................................12
1.3.6 CS以不同溶液調拌之對徑壓縮強度測試...................................13
1.3.7 CS和MTA粉末之顯微結構形態觀察.........................................13
1.3.8 CS和MTA水合後之顯微結構形態觀察....................................13
1.4討論 15
1.4.1 CS和MTA水合後之產物晶相分析.............................................15
1.4.2 CS和MTA水合後之離子釋放與pH值變化分析......................15
1.4.3 CS和MTA硬化時間測試分析.....................................................16
1.4.4 CS和MTA水合後之顯微結構形態觀察.....................................16
1.5結論 18
第二章 鈣矽材料表面活性鈣磷化合物形成 32
2.1研究背景 32
2.1.1 研究目的....................................................................................33
2.2研究材料與方法 34
2.2.1實驗材料............................................................................... 34
2.2.2實驗儀器....................................................................................... 34
2.2.3模擬體液之製備......................................................................... 34
2.2.4測試樣本之製備.......................................................................... 35
2.2.5 X光繞射分析儀............................................................................ 36
2.2.6傅立葉轉換紅外線吸收光譜分析............................................... 36
2.2.7感應耦合電漿原子發射光譜分析儀............................................ 36
2.3實驗結果.............................................................................................................. 37
2.3.1 CS浸泡SBF後材料表面之顯微形態觀察................................. 37
2.3.2 CS浸泡SBF後材料表面元素半定量分析................................. 37
2.3.3 CS浸泡SBF後材料X光繞射分析儀.........................................37
2.3.4 CS浸泡SBF後材料紅外線吸收光譜分析................................. 38
2.3.5 CS泡SBF後離子釋放定量分析...................................................38
2.4討論 39
2.4.1 CS浸泡SBF後材料表面之顯微形態觀察...................................39
2.4.2 CS浸泡SBF後材料表面元素分析與鈣、矽、磷離子之釋
放行為............................................................................................ 39
2.4.3 CS浸泡SBF後材料X光繞射分析儀.........................................39
2.4.4 CS材料之生物活性作用機轉.......................................................40
2.5結論 41
第三章 鈣矽材料對成骨細胞之生物相容性評估與礦化表現 52
3.1研究背景 52
3.1.1生物相容性................................................................................52
3.1.2 體內測試...............................................................................53
3.1.3體外測試...............................................................................53
3.1.4 研究目的.................................................................................54
3.2研究材料與方法 55
3.2.1 實驗儀器.......................................................................................55
3.2.2 實驗材料.......................................................................................55
3.2.3 所使用之細胞株與培養條件.......................................................56
3.2.4 細胞貼附材料表面之觀察 .........................................................57
3.2.5 細胞毒性測試...............................................................................58
3.2.6 細胞增生能力分析.....................................................................59
3.2.7 細胞鹼性磷酸酶活性分析...........................................................60
3.2.8 成骨細胞礦化之定量分析與觀察...............................................60
3.2.9 成骨細胞礦化之定性分析與觀察...............................................62
3.2.10統計分析.......................................................................................64
3.3實驗結果 65
3.3.1細胞貼附於材料表面之形態觀察.................................................65
3.3.2細胞毒性分析.................................................................................65
3.3.3細胞增生能力分析.........................................................................70
3.3.4細胞鹼性磷酸酶活性分析.............................................................74 3.3.5成骨細胞礦化之定量分析與觀察.................................................77
3.3.6成骨細胞礦化之定性分析與觀察................................................ 78
3.4討論 79
3.4.1 細胞貼附於材料表面之形態分析...............................................79
3.4.2 細胞毒性分析 ...........................................................................79
3.4.3細胞增生能力分析........................................................................80
3.4.4 成骨細胞礦化表現分析...............................................................80
3.5 結論......................................................................................................................82
參考文獻...................................................................................................................133

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