Dental preparation uses a tooth preparation guide custom-made for fitting with teeth of a patient. The preparation guide includes one or more guide channels for guiding a cutting tool. The preparation guide enables modification of the teeth as planned with high level of precision. A dental prosthesis for installing onto prepared teeth of the patient is provided before preparation of the teeth. The prosthesis includes features that are complementary to the prepared teeth. The prosthesis can be installed immediately after preparing the teeth using the preparation guide. With the high level of accuracy and precision in the preparation of teeth, no modification of the prosthesis would be needed for installation.牙齒修整使用訂製之牙齒修整導引以符合病患之牙齒。修整導引包含用以導引刀削工具之一個以上導引通道。修整導引使得預計修整之牙齒於高程度之準確度。用以建立於病患之牙齒之口腔贗復係於牙齒之修整之前而被提供。贗復包含互補於欲修整牙齒之特徵。贗復可在使用修整導引之修整牙齒之後而被立即建立。具有牙齒修整之高程度之正確度及準確度,無贗復之修正可被需要以建立。100‧‧‧修整導引裝置110‧‧‧側壁120‧‧‧工具導軌70‧‧‧拱台牙齒72‧‧‧近端牙齒116‧‧‧頂壁104‧‧‧導引部分125‧‧‧入口1202‧‧‧非切割接入通道1162‧‧‧中心部分1164‧‧‧周圍部分1166‧‧‧連接器
