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題 名 | Stress Analysis of Different Angulations of Implant Installation: The Finite Element Method=不同角度植體植入的應力分析:有限元素分析 |
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作 者 | 藍鼎勛; 黃恆立; 吳如惠; 李惠娥; 王兆祥; | 書刊名 | The Kaohsiung Journal of Medical Sciences |
卷 期 | 24:3 2008.03[民97.03] |
頁 次 | 頁138-143 |
分類號 | 416.96 |
關鍵詞 | 角度; 有限元素法; 植體; 應力分析; Angulated; Finite element method; Implant body; Stress analysis; |
語 文 | 英文(English) |
中文摘要 | 臨床上,在下顎後牙區我們常常發現許多不同角度的植體植入。本研究的目的是利用有限元素法針對正常咀嚼施力下不同角度的植體周圍骨應力變化分析,期望找出植體較為理想的植入角度。本研究的植體角度以 15 度為變化,模擬 8 組下顎第一大臼齒、第二大臼齒的三維模型,在模擬的併聯牙冠贗復物上施力 400 牛頓,方向為垂直力與水平力。研究的結果顯示,有些甚至比平行植入的植體在骨應力上更佳。臨床上,有很多理由可解釋為何特別是後牙區在植體植入時會有角度上的差異,由本研究結果可知,不平行植入體不一定會形成有意義的有害骨應力。 |
英文摘要 | Clinically, many implant cases with different angulation over the lower posterior area have been found. The purpose of this study was to analyze the bony stress with different implant tilting during normal masticatory load using the finite element method (FEM), with the hope of discovering a desirable installation of implant. A three-dimensional finite element method was employed to analyze the bony stress generated by different angulation designs (15 degrees) of implant bodies. Eight solid models of the mandibular first and second molars were built up and then transferred to a mesh model in FEM (ANSYS) to perform a stress analysis. A simulated load (400 N) was applied to the splinted crowns with vertical and horizontal forces. The loading sites were on the central fossa of the splinted crowns. For stress distribution, some designs will be better than a parallel installation. The results suggested that not all implant bodies tilting with the splinted crowns lead to stress concentration. |
本系統中英文摘要資訊取自各篇刊載內容。