In order to obtain an image of the inside of the mouth of a client accurately and to improve the precision of the implant treatment, the present invention is characterized in that the body portion of the thermoplastic resin material is heated and softened to a predetermined temperature or higher, A first step of fabricating an occlusal alignment variable piece having an occlusion base laminated on an outer surface corresponding to an occlusal height, the occlusion base being press-coupled to the inside of the mouth adjacent to the to-be-placed part, Wherein a viscous radiopaque resin adhesive is hemispherically attached to the inside of the oral cavity and is cured by light of a predetermined wavelength emitted from the photopolymerizer to form a resin matching portion and a CT image is obtained by CT photographing the inside of the oral cavity, A second step in which a scanned image is obtained by orally scanning the upper and lower jaws before and after the occlusion alignment variable piece is installed； A third step in which a matching point is recognized in the image of the resin matching portion respectively displayed in the scanning image and the CT image, and the three-dimensional integrated guide image is acquired by image matching based on each matching point； And a guide groove formed along a fixing position of the fixture corresponding to the set crown, the guide groove being formed in the mouth, wherein the crown height is set based on the three-dimensional integrated guide image, The method comprising the steps of: (a) providing a first step of implanting a tooth；피시술자의 구강 내부에 대한 이미지를 정확하게 획득하여 임플란트 시술의 정밀성이 향상되도록, 본 발명은 열가소성 수지 재질의 몸체부를 기설정된 온도 이상으로 가온처리하여 연화시킨 후 피시술자의 구강 내부에 형합되는 형합홈부가 형성되도록 치아 식립대상부와 인접한 상기 구강 내부에 가압 결합되되, 대합치아와 대응되는 외면에 교합 높이에 대응하여 두께가 조절된 교합베이스가 적층된 교합정렬가변피스가 제조되는 제1단계； 점성의 방사선 불투과성 레진 접착제가 상기 구강 내부에 반구형으로 부착되되 광중합기로부터 방출된 기설정된 파장의 광에 의해 경화되어 레진정합부가 형성되며, 상기 구강 내부를 CT촬영하여 CT 이미지가 획득되고, 상기 교합정렬가변피스의 설치 전후 상태의 상하악을 오랄 스캔하여 스캐닝 이미지가 획
