Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/2292
標題: 牙齒矯正裝置之力學研究
Study of Orthodontic Biomechanics
作者: 黃重晏
Huang, Chung-Yen
關鍵字: FEA;有限元素分析;Orthodontic Force;Archwire;牙齒矯正力;牙齒矯正線
出版社: 機械工程學系所
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摘要: 
現階段的牙醫師在臨床為病患矯正牙齒時多數是憑自己本身的經驗來裝設矯正的裝置,但對實際上矯正時牙齒所受到力的大小與方向卻沒有很詳細的概念。基於此點本文利用三維有限元素分析軟體(ANSYS)並使用與實際矯正牙齒時相同的邊界條件來模擬分析牙齒矯正時牙齒、牙周韌帶、齒槽骨的受力情形。
文中分析方法為控制錯位牙齒的移動來使矯正線變形並產生矯正力,主要對兩種不同形狀的矯正線做分析(分別為方形線與圓形線),並比較方形線與圓形線所產生的矯正力的差別。
另外本文依照矯正線的三個主要變形方向來做分析,案例一針對牙齒在水平方向錯位2mm情況分析。案例二則是分析牙齒於垂直方向錯位2mm的情況。至於案例三則是分析牙齒繞矯正線中心點旋轉15度的情形。希望能透過模擬分析,能清楚了解不同矯正線在三個主要方向的變形下對牙齒所產生的矯正力;使原本很難預知的矯正力明確的數值化,以提供牙醫師在臨床矯正時參考。

Today most dentists set the orthodontic devices for patients depend on their own experiences, but they do not have very detailed concept of the magnitude and the direction of the orthodontic force that the teeth received in the treatment. So, in this study, we simulate and calculate the forces that the teeth, PDLs and alveolar bones received in orthodontic treatment by 3D FEA software (ANSYS) which the boundary conditions used are same as clinical treatment.
In this research, we control the displacement of the malposition tooth to let archwire deformed and then generate orthodontic force on each tooth. We simulate rectangular archwire and round archwire then compare the difference of orthodontic force between these two archwires.
In addition, we divide this study into three cases according to the three main directions of archwire's deformation. Case 1 is a malposition tooth with 2 mm horizontally forward. Case 2 is a malposition tooth with 2 mm vertically upward. Case 3 is a malposition tooth with 15 degree rotated about the center of the archwire.
We hope that the magnitude of orthodontic force acting on teeth under these three main directions of archwire's deformation by different archwires can be understood through simulation. Furthermore, this study tries to develop a methodology to predict a more exactly magnitude of orthodontic force so that the result can be provided to dentist during the orthodontic treatment.
URI: http://hdl.handle.net/11455/2292
其他識別: U0005-1908200914475500
Appears in Collections:機械工程學系所

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