臺灣博碩士論文加值系統

針對相鄰植體的贗復體型式，大部分的研究理論上都主張連接植體上的贋復體，但沒有臨床上的試驗證明。因此本研究旨為探討不同的贗復體型式對於植體與皮質骨所受應力的差異，此外亦施加相同負載於臨床可能的各種咬力位置並搭配不同的摩擦係數與干涉量，觀察植體與皮質骨的應力分布，提供臨床製作贗復體型式時的參考。
　　分析結果顯示：在贗復體未連接的情況下，施加咬力於近心邊緣嵴、增加摩擦係數與無干涉此三種因素能夠降低植體與皮質骨等效應力。此外，當贗復體干涉量增加，植體與皮質骨所受等效應力隨之上升，即使干涉量的增加極微渺小，所產生的側向應力卻相當巨大。而贗復體為連接的情況下，同樣施加咬力於近心邊緣嵴時，植體與皮質骨所受等效應力皆為最低。另外，兩種贗復型式透過植體與皮質骨的受力情形可以看出，贗復體為連接型式是減少植體與皮質骨等效應力的最佳方式。
　　整體而言，贗復體為連接的情況下，能夠有效減少植體與皮質骨的等效應力，降低植體周圍的骨吸收或是骨疲勞斷裂的風險。

For the adjacent implant prostheses type. Most studies have advocated the theory of splinting implant prostheses, but don’t have clinical evidence. Therefore, the purpose of this study is to investigate the stress distribution of different prostheses types in implants and cortical bone. The distribution of stress can be obtained by applying the same loading to any position in clinically indicated with various coefficient of friction and interference. Then, the values of implants and cortical bone are used as a reference to make the prostheses type in clinical

　　There are three different conditions that can reduce the equivalent stress without splinting the prostheses, which are application of bite force to the mesio-marginal ridge, an increase the coefficient of friction, and no interference. In addition, when the prostheses interference is increase, the implants and cortical bone equivalent stress also increase. Even if the interference is insignificant, the resulting lateral stress is significantly. When prostheses are splinting, exerting the bite force at the mesio-marginal ridge causes all implants and cortical bone to minimum equivalent stress. Furthermore, the implants and cortical bone equivalent stress in two different prostheses type. The splinting prostheses type is the best way to reduce implants and cortical bone equivalent stress.

　　In conclusion, splinting the prosthesis can effectively reduce the equivalent stress of the implant and cortical bone as well as the risk of fatigue fracture of the bone resorption around the implant.

摘要
Abstract
致謝
目錄
圖目錄
表目錄
第一章 緒論
1.1 研究動機
1.2 文獻回顧
1.2.1有限元素模型建構
1.2.2 非線性分析
1.2.3相鄰植體贋復體是否相連
1.3 研究目的
第二章 研究方法與設備
2.1 研究流程概述
2.2 有限元素法概述
2.2.1 FEA 流程概述
2.3 有限元素模型建構
2.3.1 電腦斷層影像拍攝
2.3.2 電腦斷層影像重組
2.3.3 齒冠與下顎骨模型修整
2.3.4 植體與支台模型建構
2.4 有限元素模型分析
2.4.1 各組件組合
2.4.2 網格形式規劃
2.4.3 材料參數設定
2.4.4邊界條件設定與咬力位置
2.5 簡化研究模型
2.5.1 簡化後各組件模型
第三章 分析結果與比較
3.1 不同咬力位置對於連接與不連接之應力比較
3.1.1 第二小臼齒遠心邊緣嵴 (disto-marginal ridge)
3.1.2 第二小臼齒頰側咬頭 (cusp tip)
3.1.3 第二小臼齒近心邊緣嵴 (mesio-marginal ridge)
3.1.4 咬力位置綜合比較
3.2 不同干涉量對於連接與不連接之應力比較
3.2.1 植體於不同干涉量所受之應力
3.2.2 皮質骨於不同干涉量所受之應力
3.3 不同摩擦係數對於連接與不連接之應力比較
3.3.1 植體於不同摩擦係數所受之應力
3.3.2 皮質骨於不同摩擦係數所受之應力
3.4 反作用力對於連接與不連接之應力比較
3.4.1 反作用力對於植體與皮質骨的影響
3.4.2 摩擦係數對於反作用力的影響
3.4.3 干涉量對於反作用力的影響
3.4.4 簡化模型與未簡化模型比較
第四章 討論
4.1 有限元素模型外形
4.2 贗復體連接與不連接的影響
4.3 摩擦係數的影響
4.4 干涉量的影響
4.5 咬力位置不同的影響
第五章 結論與未來研究方向
5.1 結論
5.2 未來研究方向
文獻回顧

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