The present invention relates to a method of manufacturing an ultra-precision dental prosthesis using a CT scanner for dental use and an ultra-precision dental prosthesis thereof and, more specifically, to a method of manufacturing a dental prosthesis mounted on an abutment formed on the gum, comprising: a temporary prosthesis forming step of forming a temporary prosthesis mounted on the abutment； a temporary prosthesis preliminary adapting step of mounting the temporary prosthesis on the abutment and performing a clinical test； an optimal temporary prosthesis determining step of correcting and specifying the temporary prosthesis in the temporary prosthesis preliminary adapting step； a CT scanner photographing and measuring step of separating the optimal determined temporary prosthesis from the abutment and photographing the same with a CT scanner； a dental prosthesis size calculating step of calculating the dimensions of a dental prosthesis to be molded by using photographing information of the CT scanner； a dental prosthesis molding and processing step of processing and molding the dental prosthesis based on CT photographing and measurement information of the determined temporary prosthesis； a correcting step of correcting the dental prosthesis through a comparison evaluation of the optimal temporary prosthesis determining step and the dental prosthesis molding and processing step, and a tolerance determining step； and a finishing step of removing and washing foreign substances of the dental prosthesis processed in the dental prosthesis molding and processing step.COPYRIGHT KIPO 2020본 발명은 치과전용 CT스캔너를 이용한 초정밀 치과보철물의 제조방법 및 그 초정밀 치과보철물에 관한 것으로서, 보다 상세하게는 잇몸에 형성된 지대주에 장착되는 치과보철물의 제조방법으로서, 상기 지대주에 장착되는 임시보철물을 형성하는 임시보철물형성단계； 상기 임시보철물을 상기 지대주에 장착되어 임상시험하기 위한 임시보철물예비시적단계； 상기 임시보철물예비시적단계에서 임시보철물을 보정 및 특정하기 위한 최적의 임시보철물확정단계； 상기 최적의 확정임시보철물을 상기 지대주에서 분리한 후 CT스캐너로 촬영하는 CT스캐너 촬영 및 측정단계； 상기 CT스캐너의 촬영정보로 성형가공할 치과보철물의 치수를 산정하는 치과보철물치수산정단계； 상기 확정임시보철물의 CT촬영 및 측정정보를 토대로 치과보철물을 가공
