Content
中文摘要 Ⅰ
ABSTRACT Ⅲ
誌謝 Ⅴ
LIST OF TABLES Ⅷ
LIST OF FIGURES Ⅸ
Chapter 1 Introduction 1
1.1. Human tooth structures and compositions 1
1.2. Mechanical properties and measurement of human dentin 4
1.2.1. Microhardness test 5
1.2.2. Dynamic Mechanical analysis 7
1.2.3. Nanoindentation test 8
1.3. The demineralization and remineralization of dentin 14
1.4. Mechanical property of de-/remineralized dentin 17
1.5. Motivation and objectives 20
Chapter 2 Material and Methods 21
2.1. Mechanical property measurements of dentin 22
2.1.1. Microhardness 23
2.1.2. Dynamic mechanical analyzer 24
2.1.3. Nanoindentation test 28
2.2. Demineralization of dentin 33
2.3. Remineralization of dentin 35
Chapter 3 Results 41
3.1. Mechanical tests 41
3.1.1. Comparisons of DMA and Nanoindenter 41
3.1.2. Microindentation and nanoindentation tests 42
3.2. Demineralization of dentin with different acids 43
3.2.1. Mechanical tests with microindenter 43
3.2.2. Morphology evaluation with SEM/FE-SEM 44
3.2.3. Demineralization effect on hardness 47
3.2.4. Demineralization effect on dentin mechanical model 48
3.2.5. Demineralization effect on holding depth 49
3.2.6. Demineralization effect on viscoelasticity 50
3.3. Remineralization of dentin with remineralization materials 52
3.3.1. Remineralization effect on holding depth 52
3.3.2. Mechanical property of remineralized dentin 53
3.3.3. Morphology evaluation after remineralization 54
Chapter 4 Discussion 59
Chapter 5 Conclusion 65
Chapter 6 Reference 66
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