不同於傳統的植入治療，牙醫師在執行的植牙孔鑽導時，通常遵循自己的經驗與能力，不容易重建在術前階段規劃的鑽孔方向。本文提供一個新的鑽孔導引版製作程序，不同於昂貴的3D 雷射掃描機和快速成型機來執行高成本的植體植入程序，本研究主要在植體手術中提出一個仿射（affine）座標轉換方法於此新的鑽孔導引版製作程序，以降低預算。本研究藉由電腦斷層掃描為基礎，配合新開發的電腦軟體的診斷，可以透視骨骼的立體模型及神經的分佈，事前擬定完善的植牙計畫，選擇適當的人工牙根，決定理想的植牙位置角度與深度，並利用電腦輔助系統直接輸出植牙位置於五軸加工機，將植牙位置於固定在CNC 之石膏模上鑽孔，最後利用石膏模於植牙孔製作導引塊，牙醫師利用精確的導引塊完成植牙手術，可減少人為因素造成的失誤，並且可以確保手術中避開重要的神經或器官，大大提高植牙的安全性與成功率，也大幅降低病人對植牙手術的憂慮感。因為一旦術前的植牙規畫已確定後，手術導引板即可執行製作，經由精準的導引板協助手術鑽孔的完成。此時CNC 機台即可扮演降低成本的重要角色。既然可以利用CNC 機台來處理導引鑽孔用之鑽孔模板，鑽孔模板就可在翻印的牙齦模表面鑽出植牙孔。本研究的電腦控制五軸CNC 精密定位機台是整個製造程序的重要工具，藉由轉換矩陣執行的座標轉換，能接收植牙規劃軟體所輸出之位置、深度與角度等相關資訊，於植牙手術用之手術導引板上自動鑽孔。在植牙手術過程中就診者裝戴此手術導引板於牙床上，由牙醫師根據手術導引板上的孔位及角度，有效地於病人的齒槽骨上鑽孔以放入人工牙根。

Unlike conventional implant treatments in which the dentist executes a pilot hole guided only by his own experience and ability, it is difficult to reproduce the drilling direction established in the preoperative stage. This study proposes a method to obtain a surgical guide for drilling the pilot hole. Differing from high-cost implant placement procedures implemented by an expensive 3D laser scanner and rapid prototype machine, this study proposes an Affine transformation procedure during a new fabrication process of drill guides in implant surgery to cut costs. CT scans provide very precise images of the bone and allow visualization of the jawbone. After multiplanar reformatting, 3D models may be constructed to continue a 3D image-based program for planning and placing dental implants. The surgeon, general dentist, and restorative doctor can interact in a meaningful manner in the selection of optimal positions for the implants to achieve the desired goals of a case. Once the implant positions are finalized, a template or surgical guide can be made to be used during the implant placement procedure. Usage of CNC machines can play a critical role in meeting the requirement of cost cutting. Although it would be possible to prepare the drill guide with stone models (made from impressions) using the CNC machine, the drill template is preferably molded on a stone model of the gum surface into which model the CNC device has previously drilled the desired implant drill holes. Converting the CT coordinate system to a machine coordinate system is also important because the stone models are fixed in a 5-axis CNC drill machine, which will be provided as a tool to receive instructions from the implant planning software and to drill holes on the drill template body used in dental implant surgery.