Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
권호 표지

Three Dimensional Comparative Study On The Accuracy Of Impression Technique Using New Impression Coping

새로운 인상용 코핑을 이용한 임플란트 인상법의 정확성에 대한 3차원적 비교 연구

  • Kim, Se-Ra (Dept. of Dentistry, School of Medicine, Ajou University) ;
  • Kim, In-Soo (Dept. of Dentistry, School of Medicine, Ajou University) ;
  • Park, Sung-Jae (Dept. of Dentistry, School of Medicine, Ajou University) ;
  • Lee, Byung-Ok (Dept. of Mechanical Engineering, College of Engineering, Ajou University) ;
  • Ko, Sok-Min (Dept. of Dentistry, School of Medicine, Ajou University)
  • 김세라 (아주대학교 의과대학 치과학교실 및 공과대학 기계공학부) ;
  • 김인수 (아주대학교 의과대학 치과학교실 및 공과대학 기계공학부) ;
  • 박성재 (아주대학교 의과대학 치과학교실 및 공과대학 기계공학부) ;
  • 이병옥 (아주대학교 의과대학 치과학교실 및 공과대학 기계공학부) ;
  • 고석민 (아주대학교 의과대학 치과학교실 및 공과대학 기계공학부)
  • Received : 2010.05.05
  • Accepted : 2010.09.25
  • Published : 2010.09.30
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Abstract

The objective of this study was to examine the availability of the new impression coping by comparing with conventional coping in implant pick-up impression technique. Five implant fixtures were installed on #14, 21, 23, 25, 27 in acrylic resin model. That model with 5 fixtures was standard model, which was divided 3 groups; using new flag type impression coping, conventional impression coping splinted with self-curing resin, conventional impression coping without splinting. We made metal circular cones for calculation 3-dimensional coordinates by attaching to implant fixtures or analogs. Three-dimensional relationships of each model were calculated. Data was analyzed by multiple ANOVA and Bonferroni. The accuracy of impression between using new flag type impression coping and conventional impression coping did not show differences in 3 - dimensional analysis.Within limitations of this study, the new flag type impression coping is available in implant pick-up impression technique.

본 연구는 임플란트 상부 구조물 제작을 위한 pick-up 인상 채득시 flag type의 새로운 인상용 코핑을 이용하여 제작된 모형과 기존에 사용되고 있는 인상용 코핑에 의해 제작된 모형의 정확성을 3차원적으로 비교하여 새로운 형태의 인상용 코핑을 사용한 인상법의 유용성을 알아보고자 하였다. 아크릴릭 레진 블록으로 좌측은 전부 무치악, 우측은 제 2 소구치가 상실된 상악 기준 모형을 제작하였다. 상악 우측 제 2소구치, 좌측 중절치, 좌측 견치, 좌측 제 2 소구치, 좌측 제 2 대구치 부위에 외부 육각 연결 방식의 임플란트 고정체를 식립하였다. 기준 모형에 사용된 인상용 코핑 및 코핑 간에 연결 여부에 따라 세 가지 실험군으로 분류하였다; 임플란트 고정체에 flag type 의 인상용 코핑을 체결한 경우 (실험군 I), 기존 형태인 원통형의 인상용 코핑을 체결한 후 인상용 코핑을 자가 중합 아크릴릭 레진으로 연결한 경우 (실험군 Ii), 원통형 인상용 코핑을 체결한 후 자가 중합 레진으로 연결하지 않은 경우 (실험군 III). 총 15개의 모형을 제작하여 인상 채득하여 작업 모형을 제작한 후 기준 모형 및 작업 모형을 5번씩 측정하여 통계 처리하였다. flag type의 인상용 코핑을 이용하여 인상 채득한 군, 기존의 인상용 코핑을 자가 중합 레진으로 splinting하여 인상 채득한 군, 기존의 인상용 코핑을 splinting 하지 않고 인상 채득한 군의 작업 모형에서 각 임플란트 유사체 간 거리 차이는 통계적으로 유의하지 않았다(P >.05). 또한 동일 수평면에 대한 수직적 거리를 비교한 결과 flag type의 인상용 코핑을 사용하여 제작한 작업 모형이 Point 2에서는 기준 모형에 가장 근접한 수치를 보였고 Point 3에서는 오차가 가장 컸으며 이는 통계적으로 유의하였다(P <.05). 그 외 Point에서는 세 가지 방법 간에 통계적으로 유의한 차이는 없었다(P >.05). 새로운 인상용 코핑을 사용한 인상법은 기존의 인상용 코핑을 사용한 인상법과 비교적 유사한 정확성을 보여주었다.

Keywords

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