正顎手術的目的是使患者有良好的齒列與顏顎面對稱關係，根據顏面特徵比例及適當的咬合關係進行口外手術計畫的擬定，本研究目標為開發一套協助醫師執行正顎手術計畫之咬合器系統。
本研究開發的導航咬合器雛形系統提出機械式與光學式兩種免面弓(Face-bowless)齒模置位(Mount)於咬合器(Articulator)之方法，提高置位精度與準度，改善傳統咬合器樞紐軸和齒模相對位置，與患者實際狀況相異之問題。雛形系統整合了自製光學追蹤裝置、顏顎骨最佳對稱分析方法與兩組免面弓咬合器元件，可即時量化並呈現齒模移動時上下顎骨關係位置與整體的對稱度，供後續開發整併三維測顱分析、咬合與中下臉部的對稱度評估。最後驗證導航咬合器雛形系統之置位精度，並應用於正顎手術實例上。

The main concept of this study is to develop a new articulator system, to assist surgeons in planning the orthognathic surgery.
The new system can faithfully reveal the correct positions between mandibular rotational axis (connecting left and right condyles) and upper jaw which respectively represents hinge axis and dental casts on general artificial articulator. This prototype system integrates a self-developd optical tracking device embedded the best symmetry evaluation method and two sets of face-bowless articulator components. Finally, we verify the system accuracy and validate its feasibility by applying it in orthognathic surgical planning.

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