| LIST OF CONTENTS | 第5-8页 |
| ABBREVIATIONS | 第8-9页 |
| ABSTRACT | 第9-10页 |
| 中文摘要 | 第11-12页 |
| INTRODUCTION | 第12-14页 |
| Part Ⅰ: Investigation into Retention Strength and Fatigue Resistance ofVarious Designs of overdenture support foundation and attachments | 第14-53页 |
| 1. Materials | 第15-16页 |
| 1.1 Software and Equipment | 第16页 |
| 2. Methods | 第16-31页 |
| 2.1 Experimental models | 第16-18页 |
| 2.2 Model preparation | 第18-26页 |
| 2.3 Testing apparatus | 第26-28页 |
| 2.4 Universal testing Machine | 第28-29页 |
| 2.5 Mounting Procedure of testing apparatus and model on the universal testing machine | 第29-30页 |
| 2.6 Testing Protocol | 第30-31页 |
| 2.7 Statistical analysis | 第31页 |
| 3. Results | 第31-47页 |
| 3.1 Descriptive statistics for the Absolute Force | 第31-37页 |
| 3.2 Descriptive statistics for the Relative Force | 第37-42页 |
| 3.3 Inferentialstatistics | 第42-47页 |
| 4. Discussions | 第47-53页 |
| 4.1 Research study questions | 第47页 |
| 4.2 Attachment system selection | 第47-48页 |
| 4.3 Effect of cycles' no. on the retention fatigue strength values | 第48-49页 |
| 4.4 Effect of attachment combination designs on the retention fatigue strength values | 第49-50页 |
| 4.5 Effect of overdenture support configuration design on the retention fatigue strength values | 第50-51页 |
| 4.6 Bases for selecting the no. of cycles | 第51-52页 |
| 4.7 Reasons behind the mini dental implant system selection | 第52页 |
| 4.8 Limitation of the retention Fatigue strength study | 第52-53页 |
| Part Ⅱ: Investigation into Stress Distribution and Flexing AmongVarious Designs of overdenture support foundation and attachments | 第53-93页 |
| 1. Materials | 第54-55页 |
| 1.1 Software and Equipment used in the finite element analysis study | 第55页 |
| 2. Methods | 第55-68页 |
| 2.1 Study models design | 第55-56页 |
| 2.2 Assumption of the detailed geometries and dimensions | 第56-62页 |
| 2.3 Materials properties | 第62-63页 |
| 2.4 Generating the model | 第63-66页 |
| 2.5 Boundary condition and load application | 第66-67页 |
| 2.6 Solving the problems | 第67-68页 |
| 2.7 Listing the results | 第68页 |
| 3. Results | 第68-85页 |
| 3.1 Data collection | 第68-69页 |
| 3.2 Comparing O'_(vm)within each models | 第69-77页 |
| 3.3 | 第77-82页 |
| 3.4 Comparing O'_(vm) at attachments'levels among all models | 第82-83页 |
| 3.5 Comparing O'_(vm) at bone-overdenture support foundations' levels among all models | 第83-84页 |
| 3.6 Comparing maximum flexing at attachments and support foundation levels among all models | 第84-85页 |
| 4. Discussions | 第85-93页 |
| 4.1 Research study questions | 第85页 |
| 4.2 Importance of finite element method | 第85-86页 |
| 4.3 Model design considerations | 第86-87页 |
| 4.4 Free standing implant vs. tooth-Implant supported overdenture models | 第87页 |
| and Triangular vs. Quadrangular overdenture support designs | 第87-88页 |
| 4.5 Stresses and flexing comparison at attachment and bone-overdenture support foundation levels | 第88-89页 |
| 4.6 Limitation of finite element method | 第89-93页 |
| CONCLUSIONS | 第93-94页 |
| SUGGESTIONS FOR FURTHER STUDIES | 第94-95页 |
| Literature Review | 第95-134页 |
| Ⅰ. Overdenture; support designs and attachments | 第95-117页 |
| Ⅱ. Principles of Oral Structure Biomechanics | 第117-121页 |
| Ⅲ. Methods of Measuring Stress Distribution | 第121-129页 |
| Ⅳ. Finding from Previous Retention and Wear Studies | 第129-134页 |
| References | 第134-150页 |
| AUTHOR INFORMATIONS | 第150-152页 |
| ACKNOWLEDGEMENTS | 第152页 |
