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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/46640完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 李伯訓 | |
| dc.contributor.author | Li-Chun Huang | en |
| dc.contributor.author | 黃麗君 | zh_TW |
| dc.date.accessioned | 2021-06-15T05:20:23Z | - |
| dc.date.available | 2015-09-09 | |
| dc.date.copyright | 2010-09-09 | |
| dc.date.issued | 2010 | |
| dc.date.submitted | 2010-07-20 | |
| dc.identifier.citation | (1972) IUPAC Manual of Symbols and Terminology, Appendix 2, Part 1,Colloid and SurfaceChemistry. 31:578.
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/46640 | - |
| dc.description.abstract | 目前一般診所常見的冷光美白、雷射美白等所使用的美白藥劑,多為30%過氧化氫的漂白藥劑為主,利用光源(熱催化)來加速過氧化氫分解成氫氧自由基去分解牙齒中的色素,但是高濃度的漂白藥劑及此種光照漂白方法會產生一些副作用像是牙齒敏感、牙齒表面結構的改變、牙根吸收及對牙髓組織造成傷害…等。
本篇研究主要目的是合成出適合抓住過渡金屬離子的中孔洞奈米粒子(Mesoporous Silica Nanoparticles,簡稱MSN),藉由已抓住過渡金屬離子的中孔洞奈米粒子來催化過氧化氫溶液,快速產生氫氧自由基去分解色素,縮短漂白的時間,減少漂白藥劑對牙齒的傷害。根據文獻指出過渡金屬具有催化過氧化氫的能力(Parra et al., 2004),因此我們選用Fe(II)、Mn(II)這兩種過渡金屬離子當作催化劑。接著選用Orange II當作催化反應的染色指示劑,以紫外光/可見光分光光譜儀檢測這兩種金屬離子的漂白催化效果;結果顯示以Fe(II)-histidine-MSN的效果最好,而從照片觀察來看Mn(II)-histidine-MSN跟histidine-MSN似乎只有吸附的效果。接著將金屬離子催化劑應用在牙齒漂白上,將牙齒先以Orange II染色48小時,再用金屬離子催化劑催化過氧化氫溶液漂白已染色的牙齒,分析ΔE的結果顯示不管是在Enamel、Outer dentin還是Inner dentin,都是Fe(II)-histidine-MSN的漂白效果最佳。因此我們認為在相同時間內,金屬離子催化劑的漂白效果確實比沒有加催化劑的控制組好,未來或許可以試著再降低過氧化氫的濃度,去探討金屬離子催化劑是否也有很好的效果,或者再找尋漂白效果更好的過渡金屬離子,縮短漂白時間及降低過氧化氫溶液的濃度,減少漂白造成牙齒的副作用。 關鍵字: 中孔洞奈米粒子、過渡金屬離子、組胺酸、催化劑、牙齒漂 白 | zh_TW |
| dc.description.abstract | The In-office bleaching agent concentration is approximately 30% H2O2,and always using light sources or heat to accelerate the bleaching agent, for rapidly breakdown H2O2 to generated free radical (•OH), and then free radical (•OH) would attack the pigment in the tooth . But high concentration bleaching agent and using light accelerate bleaching method would have some side effects, like tooth hypersensitivity、change tooth surface and structure、root absorption and pulp thermal damage etc.
The aim of this study was to synthesis mesoporous silica nanoparticles (MSN)for immobilized metal ion-histidine complex, then use Me-histidine-MSN to catalyst H2O2, generated free radical (•OH) rapidly. We could reduced duration of bleaching, and decrease the side effects of tooth bleaching. According the literature(Parra et al., 2004),we utilized two metal ions(Fe2+and Mn2+ ) to catalyze the reaction rate of H2O2. We selected Orange II as an indicator for catalyst reaction. Spectrophotometer and picture was used to determine the most efficient metal ions in our established tooth stain model. The results revealed that Fe(II)-histidine-MSN had the greatest bleaching ability followed by Mn(II)-histidine-MSN and others. Subsequently, we apply the Me-histidine-MSN in tooth bleaching, first utilized Orange II solution to stain tooth for 48 hours, and then bleaching the stained tooth by Me-histidine-MSN and H2O2. The result of ΔE value revealed that whatever in Enamel、Outer dentin or Inner dentin, the Fe(II)-histidine-MSN had the greatest bleaching ability. So we thought that in the same bleaching time, the Me-histidine-MSN had the greatest bleaching ability than without metal catalyst. In the further, maybe we can reduce the concentration, and then to find Me-histidine-MSN still have good bleaching ability, or search the greatest bleaching ability metal catalyst. And we could reduce bleaching time and the concentration, and thereby, decrease the potential damage of H2O2 to tooth during tooth bleaching. Key words: Mesoporous silican nanoparticle, Transition metal ion, Histidine, Catalyst, Tooth bleaching | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T05:20:23Z (GMT). No. of bitstreams: 1 ntu-99-R97450018-1.pdf: 5288501 bytes, checksum: beb9dc27ac69c14ef0dc60d908ba75be (MD5) Previous issue date: 2010 | en |
| dc.description.tableofcontents | 目錄
致謝 .................................................i 中文摘要 ...............................................iii Abstract .................................................v 目錄 ...............................................vii 圖次 .................................................x 表次 ...............................................xii 第一章 前言 ........................................1 第二章 文獻回顧 ........................................2 2.1牙齒美白 ........................................2 2.1.1牙齒的顏色及變色原因 ...............................2 2.1.2改善牙齒染色的方法 ..............................12 2.1.3牙齒美白的方式 ..............................13 2.1.4影響漂白的因素及漂白的副作用 .....................20 2.2 牙齒顏色的評估方式 ..............................27 2.2.1牙齒顏色評估的方法 ..............................27 2.2.2 CIE Lab 色彩空間 ..............................29 2-3 氫氧自由基的測定 ..............................30 2.3.3螢光技術法 30 2.4 適合的過渡金屬離子催化劑 .....................31 2.4.1費頓反應(Fenton reaction)的原理 .....................31 2.4.2過渡金屬離子的催化機制 31 2.5中孔洞奈米粒子於過渡金屬離子催化反應中的應用 ...32 2.5.1 孔洞材料(inorganic porous materials)的簡介 ...32 2.5.2 中孔洞材料的簡介 ..............................33 2.5.3 中孔洞材料在異相催化反應上的應用 ............34 2.6組胺酸-金屬離子錯合物 ..............................36 第三章 實驗動機與目的 ..............................37 第四章 實驗方法與材料 ..............................38 4.1使用儀器及藥品清單 ..............................38 4.1.1實驗儀器 .......................................38 4.2.2 實驗藥品清單 .......................................39 4.2漂白催化劑的製備 ..............................42 4.2.1 組胺酸官能基化之中孔洞奈米粒子(Histidine-AP-MSN)的製備 ................................................42 4.2.2 Fe(II)-his-MSN & Mn(II)-his-MSN的製備 ............46 4.3 三種金屬離子催化劑在Orange II試管中催化效果評估 ...46 4.3.1利用紫外光/可見光分光光譜儀分析漂白催化劑催化效果的結果(0.45μm針筒過濾器過濾催化劑顆粒) .....................46 4.3.2利用紫外光/可見光分光光譜儀分析漂白催化劑催化效果的結果(利用高速離心將催化劑顆粒分離) .....................47 4.3.3利用時間點照相的方式分析漂白催化劑催化效果的結果(利用高速離心機將催化劑顆粒分離) ..............................48 4.4牙齒漂白實驗部分 ..............................49 4.4.1 牙齒樣本的前處理 ..............................49 4.4.2牙齒樣本顏色分析方法 ..............................49 4.4.3牙齒樣本的染色方法 ..............................50 4.4.4兩種金屬離子催化劑在Orange II染色牙齒樣本上漂白效果評估........................................................50 第五章 實驗結果與討論 ..............................52 5.1 histidine-AP-MSN材料分析結果 .....................52 5.1.1 MSN、His-MSN、Fe(II)-his-MSN跟Mn(II)-his-MSN的SEM-EDX結果 ................................................52 5.1.2 Fe(II)-his-MSN的TEM-EDS結果 .....................54 5.1.3 MSN、His-MSN、Fe(II)-his-MSN跟Mn(II)-his-MSN的XRD結果 ................................................54 5.1.4 MSN、His-MSN、Fe(II)-his-MSN跟Mn(II)-his-MSN 比表面積及 孔隙大小的結果 .......................................55 5.1.5 MSN、His-MSN、Fe(II)-his-MSN跟Mn(II)-his-MSN 的ICP-AES結果 ................................................55 5.2 利用Orange II比較漂白催化劑在試管中的催化能力 ...56 5.2.1 利用紫外光/可見光分光光譜儀分析漂白催化劑催化效果的結果 ................................................56 5.2.2 利用相機記錄漂白催化劑的催化效果 ...........57 5.3漂白催化劑在牙齒漂白實驗中的催化能力 ...........58 第六章 結論 .......................................61 第七章 未來展望 .......................................62 參考文獻 ................................................63 圖次 圖2 1 牙齒解剖結構圖 ..............................75 圖2 2 過氧化氫反應式(Dahl and Pallesen, 2003) ............75 圖2 3 牙釉質表面漂白前(A)跟後(B)的SEM圖(Dahl and Pallesen, 2003) ................................................76 圖2 4 牙科臨床比色用Vita LuminTM比色板(程敬業, 2003) ...76 圖2 5 CIE Lab colour space(A. Joiner, 2004) ............77 圖2 6 費頓反應機制 .......................................77 圖2 7 沸石 .......................................78 圖2 8 沸石一級單元 .......................................78 圖2 9 a)MCM-41 b) MCM-48 c)MCM-50 .....................78 圖2 10 四級銨鹽化學結構示意圖 .....................79 圖2 11 在鹼性條件下會形成微胞 (Vartuli et al.182) ...79 圖2 12 MCM-41合成機制示意圖 .....................79 圖2 13 帶負電的矽源跟帶正電的親水端結合 ............80 圖2 14 組胺酸化學結構圖 ..............................80 圖2 15 Cu(II)-Histidine 錯合物結構圖 ............80 圖4 1 慢速鋸片機(Isomet low speed saw,Buehler ............81 圖4 2 Orange II的化學結構式 .....................81 圖4 3 影像分析軟體(Photoshop CX4 Extend, Adobe) ...82 圖4 4 影像擷取系統(Canon 400D數位相機,顯微鏡(Leica) ...82 圖4 5 重複定位板 .......................................83 圖 5 1 中孔徑奈米粒子(MSN)在SEM下的觀察 (a)100000X (b)200000X ................................................84 圖 5 2 His-MSN在SEM下的觀察(a)200000X (b)250000X ...85 圖 5 3 Fe(II)-His-MSN在SEM下的觀察 (a)100000X (b)30000X ................................................86 圖 5 4 Mn(II)-His-MSN在SEM下的觀察 (a)200000X (b)300000X ................................................87 圖 5 5 中孔徑奈米粒子(MSN)的EDX(Energy Dispersive X-ray analysis)分析圖 .......................................88 圖 5 6 His-MSN的EDX(Energy Dispersive X-ray analysis)分析圖 ................................................88 圖 5 7 Fe(II)-His-MSN的EDX(Energy Dispersive X-ray analysis)分析圖 .......................................89 圖 5 8 Mn(II)-His-MSN的EDX(Energy Dispersive X-ray analysis)分析圖 .......................................89 圖 5 9 Fe(II)-His-MSN在TEM下的觀察 .....................90 圖 5 10 Fe(II)-His-MSN 的(Energy Dispersive Spectromete)EDS分析圖 ................................................91 圖 5 11 X光繞射圖(XRD) (a) Mn(II)-His-MSN (b) ...92 圖 5 12 中孔徑奈米粒子(MSN) 氮氣等溫吸附脫附圖(BET) ...93 圖 5 13 His-MSN氮氣等溫吸附脫附圖(BET) ............93 圖 5-14 Fe(II)-His-MSN氮氣等溫吸附脫附圖(BET) ...94 圖 5-15 Mn(II)-His-MSN氮氣等溫吸附脫附圖(BET) ...94 圖 5-16 MSN孔徑大小分佈圖(BJH) .....................95 圖 5-17 His-MSN孔徑大小分佈圖(BJH) .....................95 圖 5-18 Fe(II)-His-MSN孔徑大小分佈圖(BJH) ............96 圖 5-19 Mn(II)-His-MSN孔徑大小分佈圖(BJH) ............96 圖 5-20 漂白催化劑在試管中反應的UV結果(0.45μm針筒過濾器過濾) ................................................97 圖 5-21 Orange II UV 吸收峰(483nm) .....................97 圖 5-22 漂白催化劑在試管中反應的UV結果(高速離心) ...98 圖 5-23 催化劑在試管中的反應(照相) .....................99 圖 5-24 比較兩種金屬離子催化劑Fe(II)-his-MSN跟Mn(II)-his-MSN及不加催化劑在牙釉質(Enamel)的漂白效果(縱軸以∆E表示) ..101 圖 5-25 比較兩種金屬離子催化劑Fe(II)-his-MSN跟Mn(II)-his-MSN及不加催化劑在外牙本質(Outer dentin)的漂白效果(縱軸以∆E表示) ...............................................102 圖 5-26 比較兩種金屬離子催化劑Fe(II)-his-MSN跟Mn(II)-his-MSN及不加催化劑在內牙本質(Inner dentin)的漂白效果(縱軸以∆E表示) ...............................................103 圖 5-27 照相紀錄金屬離子催化劑漂白過程牙齒顏色的變化 ..104 表次 表2 1 牙齒變色的分類表 .............................105 表2-2 氟斑牙跟四環黴素染色的分類 ....................106 表2 3 牙齒漂白完牙齒敏感的發生率(Dahl and Pallesen, 2003) ...............................................106 表2 4 分子篩依孔洞大小的分類 ....................106 表5 1 中孔徑奈米粒子(MSN)的EDX元素分析比例 ...........107 表5 2 His-MSN的EDX元素分析比例 ....................107 表5 3 Fe(II)-His-MSN的EDX元素分析比例 ...........107 表5 4 Mn(II)-His-MSN的EDX元素分析比例 ...........108 表5 5 利用ICP-AES分析 Mn(II)-His-MSN、Fe(II)-His-MSN、His-MSN材料上有無金屬含量 .............................108 表5 6 MSN、His-MSN、Fe(II)-His-MSN、Mn(II)-His-MSN四種材料的比表面積及平均孔洞大小 .............................108 | |
| dc.language.iso | zh-TW | |
| dc.subject | 過渡金屬離子 | zh_TW |
| dc.subject | 牙齒漂白 | zh_TW |
| dc.subject | 催化劑 | zh_TW |
| dc.subject | 組胺酸 | zh_TW |
| dc.subject | 中孔洞奈米粒子 | zh_TW |
| dc.subject | Mesoporous silican nanoparticle | en |
| dc.subject | Catalyst | en |
| dc.subject | Tooth bleaching | en |
| dc.subject | Histidine | en |
| dc.subject | Transition metal ion | en |
| dc.title | 合成含金屬離子-組胺酸之中孔徑奈米粒子以促進牙齒漂白效率 | zh_TW |
| dc.title | Synthesis of Metal ion-Histidine Complex immobilized Mesoporous Silica Nanoparticles for enhancement of Tooth Bleaching Efficiency | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 98-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 張哲政,吳嘉文 | |
| dc.subject.keyword | 中孔洞奈米粒子,過渡金屬離子,組胺酸,催化劑,牙齒漂白, | zh_TW |
| dc.subject.keyword | Mesoporous silican nanoparticle,Transition metal ion,Histidine,Catalyst,Tooth bleaching, | en |
| dc.relation.page | 108 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2010-07-20 | |
| dc.contributor.author-college | 牙醫專業學院 | zh_TW |
| dc.contributor.author-dept | 口腔生物科學研究所 | zh_TW |
| 顯示於系所單位: | 口腔生物科學研究所 | |
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