3차원 컴퓨터 그래픽 기술을 이용한 KONUS 내관의 설계와 제작
DESIGN AND FABRICATION OF INNER KONUS CROWN USING THREE DIMENSIONAL COMPUTER GRAPHICS
김인섭, 김병오, 류관희, 강동완,
소속 상세정보
김인섭 ( Kim In-Sup ) - 조선대학교 치과대학 보철학교실
김병오 ( Kim Byung-Oh ) - 덴탈그래픽
류관희 ( Yoo Kwan-Hee ) - 충북대학교 컴퓨터교육과
강동완 ( Kang Dong-Wan ) - 조선대학교 치과대학 보철학교실
KMID : 0362420000380040544
Abstract
A fabrication method of inner and outer crown using CAD/CAM is presented. The information of abutment teeth is transferred to a computer through a 3-dimensional scanner. A Konus inner and outer crown is designed on a computer and a real crown is machined based on this design using CAM. This method can save laboratory time and reduce inaccuracies compare to conventional casting procedure. A stone model with six prepared abutment teeth from a patient was used in this study. Three dimensional information from the model was transferred to a computer using a contact type 3dimensional scanner with a 25micrometer accuracy. All margins were identified on a computer image where there is a change in surface taper of a model. To provide a cement space, the image of a inner surface of a Konus inner crown was duplicated 25micrometer apart from the surface of a prepared abutment teeth image. The cement space was 20micrometer at the cervical margin. All Konus crowns were machined with a 10micrometer accuracy. It was concluded that this method can reduce working-time for the laboratory process and increase accuracy. A further research is required to make a simplified process for a more complex prosthesis.
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