A computer-aided positioning and guiding system for dental implant comprises: a computer system installed therein with dental implant planning software and provided with a 3D digital human tissue model and forming implant guidance information a positioning assistive device including a body and a connection member, the body being provided with a fixing portion and at least a guide portion, the connection member being provided with an optical positioning element at least one optical capture device and a display device electrically connected to the computer system. The computer system uses the least one optical capture device to capture images and uses the display device to display at least a part of the content of the 3D digital human tissue model and the implant guidance information.一種用於植牙之電腦輔助定位導引系統,包含有:一電腦系統,內部安裝有一植牙規劃軟體,並具有3D人體組織數位幾何模型,並形成一植牙導引資訊;一定位輔助裝置,具有一本體以及一連接件,該本體具有一固定部以及至少一導引部;該連接件設有一光學定位元件;至少一光學擷取裝置;以及一顯示裝置,電性連接於該電腦系統;其中,該電腦系統係藉由該至少一光學擷取裝置來進行影像擷取,再將該3D人體組織數位幾何模型的至少局部內容顯示於該顯示裝置,並且將該植牙導引資訊顯示於該顯示裝置。10‧‧‧用於植牙之電腦輔助定位導引系統11‧‧‧電腦系統21‧‧‧定位輔助裝置22‧‧‧本體221‧‧‧固定部222‧‧‧導引部24‧‧‧連接件26‧‧‧光學定位元件27‧‧‧固定件31‧‧‧光學擷取裝置41‧‧‧顯示裝置
