The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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Accuracy of conventional and digital mounting of dental models: A literature review

치과용 모형의 모형 부착 과정에서 발생하는 오차에 대한 문헌 고찰

  • Kim, Cheolmin (Department of Prosthodontics, Gangnam Severance Dental Hospital, School of Dentistry, Yonsei University) ;
  • Ji, Woon (Department of Prosthodontics, School of Dentistry, Yonsei University) ;
  • Chang, Jaeseung (Department of Prosthodontics, Gangnam Severance Dental Hospital, School of Dentistry, Yonsei University) ;
  • Kim, Sunjai (Department of Prosthodontics, Gangnam Severance Dental Hospital, School of Dentistry, Yonsei University)
  • 김철민 (연세대학교 치과대학 강남세브란스치과병원 치과보철과) ;
  • 지운 (연세대학교 치과대학 보철과학교실) ;
  • 장재승 (연세대학교 치과대학 강남세브란스치과병원 치과보철과) ;
  • 김선재 (연세대학교 치과대학 강남세브란스치과병원 치과보철과)
  • Received : 2020.09.10
  • Accepted : 2020.10.12
  • Published : 2021.01.29
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Abstract

Accurate transfer of the maxillo-mandibular relationship to an articulator (i.e., mounting) is critical in prosthetic treatment procedures. In the current study, a PubMed search was performed to review the influencing factors for the maxillo-mandibular relationship's accuracy. The search included digital mounting as well as conventional gypsum cast mounting. The results showed that a greater amount of displacement was introduced during positioning the maxillary and mandibular models to interocclusal records rather than the dimensional change of registration material. Most intraoral scanners resulted in an accurate reproduction of the maxillo-mandibular relationship for posterior quadrant scanning; however, the accuracy was declined as the scan area increased to a complete arch scan. The digital mounting accuracy was also influenced by the image processing algorithms and software versions, especially for complete arch scans.

정확한 보철물의 제작을 위해서는 악간 관계의 정확한 인기가 중요하다. 전통적 석고 모형을 이용한 교합기에의 모형 부착 뿐 아니라 최근 디지털 치의학의 발전으로 디지털 모형 부착방법의 정확도에 대한 고찰이 필요하다. 본 논문에서는 Pubmed 검색을 이용하여 전통적 방법과 디지털을 이용한 모형 부착의 정확도에 대한 문헌 연구를 진행하였다. 전통적 교합인기재의 경우 폴리이써와 폴리비닐실록산 등의 탄성인기재가 변위량이 적었으며, 인기 기법에 따라 정확도의 차이가 관찰되었다. 모형 부착 과정에서 수직적 변위가 발생할 수 있으나 인기재 자체의 변화보다 모형을 교합기 상에 부착하는 과정 자체에서의 오차가 더 크게 나타난다고 보고되었다. 디지털 치의학의 발전으로 최근 많이 사용되고 있는 가상 모형 부착의 경우 좁은 범위에서는 유의미한 차이를 보이지 않지만 가상 인상 채득의 범위가 커질수록 정확성이 다소 떨어지는 경향을 보이기 때문에 광범위한 수복에서는 이를 인지하고 임상에 적용해야 한다. 각 제조사별 스캐너의 종류와 이미지 처리 알고리즘, 소프트웨어 또한 가상 모형 부착의 정확도에 영향을 미칠 수 있으며, 이는 앞으로 충분히 발전 가능성을 보인다.

Keywords

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