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研究生:盧宥昇
研究生(外文):You-Sheng LU
論文名稱:牛隻皮質骨鑽孔過程模擬
論文名稱(外文):The Simulation of Drilling Process in Bovine Cortical Bone
指導教授:李泓原
指導教授(外文):Hung-Yuan Li
學位類別:碩士
校院名稱:國立高雄應用科技大學
系所名稱:模具工程系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
畢業學年度:100
語文別:中文
論文頁數:69
中文關鍵詞:人工植牙皮質骨彈塑性黏塑性
外文關鍵詞:Dental implantCortical boneElasto-plasticViscoplastic
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在人工植牙蓬勃發展的今日,使得植牙手術在骨整合的時間有效縮短,術後成功率也高達95%,骨整合視為人工植牙手術成功關鍵因素之一。植牙手術後骨整合失敗原因,多半在於患者本身骨質條件與手術操作者技術,傷口細菌感染以及咬合力超負荷等導致骨整合失敗。在植牙過程中必需使用鑽頭在齒槽骨上建立人工植體定位孔,在鑽孔過程中必然會產生應變,在過去文獻提及皮質骨應變分佈不均將導致骨質流失,使得骨整合失敗。
Dental implant is a permanent teeth replacement option that involves insertion of an artificial tooth in place of a missing tooth. The success of the operation depends on many factors, which one of them is the osseo-integration. Osseo-integration is a phenomena where a bone biologically bonds to an implant element. Good osseo-integration condition can effectively reduce the recovery time and enhance the post-operative success rate nearly 95%. However, osseo-integration depends on patients bone conditions, technique of dentist’s surgery and tooth wound infection. Recent literary references indicated that the drilling procedure in the implant positioning operation may also generate uneven strain distribution which can induce bone loss. As a consequence, the osseo-integration failed in the implant process.

In this research, an explicit dynamic analysis is conducted to simulate the drilling process of cortical bone. Both a three blade drill bit and double blade drill bit are used to drill a hole in the cortical bone. Cortical bone material model based on two different material model, visco-plastic and elastic-plastic, are simulated to predict the stress and strain distribution in the process. Bovine bone experiment is performed to validate the simulation results.

Analysis results show that the strain generated from elasto-plastic model is greater than that from visco-plastic based on the same boundary conditions. It also shows that the stress from two balde drill bit model , 6.88e+4 KPa, is also much higher than that from tri-blade drill bit model, 5.26e+4 KPa.
目錄
摘要 iii
目錄…... …………………………………………………………………………v
圖目錄 vii
符號表 x
一、緒論 1
1-1 前言 1
1-2 骨組織 3
1-3 骨頭材料模型 5
1-3-1 黏彈性材料 5
1-3-2 黏塑性材料 6
1-4 文獻回顧 7
1-4-1 骨頭材料模型 7
1-4-2 鑽孔過程 8
1-5 研究動機 9
1-6 論文架構 10
二、研究相關理論 11
2-1 等效應力理論 (馮氏應力) 11
2-2 材料模型 11
2-2-1 黏彈性材料 11
2-2-2 黏塑性材料 16
2-2-3 彈塑性材料 20
2-3 有限元素法 22
2-3-1 彈性力學分析 22
2-3-2 非線性有限元素法之基礎 27
2-4 LS-DYNA 有限元素分析軟體 31
2-5 鑽頭切削加工理論 34
三、實驗步驟方法 36
3-1 建立鑽頭幾何外型 37
3-2 皮質骨材料模型 40
3-2-1 黏塑性皮質骨材料模型 40
3-2-2 彈塑性皮質骨材料模型 41
3-3 模擬參數設定 42
3-3-1 皮質骨模擬參數 42
3-3-2 鑽頭模擬參數設定 43
3-4 牛隻動物驗證實驗 44
四、結果與討論 48
4-1三刃鑽頭對黏塑性分析結果 48
4-2三刃鑽頭對彈塑性分析結果 51
4-3 雙刃鑽頭對黏塑性分析結果 53
4-4雙刃鑽頭對彈塑性分析結果 56
4-5 分析結果討論 59
4-6 牛隻動物驗證實驗 61
五、 結論與未來研究方向 63
5-1 結論 63
5-2 未來研究方向 64
六、 參考文獻 65
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