The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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Zirconia removable prosthesis using a milled bar in patient with mandible anterior edentulous area with severe alveolar bone resorption: a case report

치조골 흡수가 심한 하악 전치부 부분 무치악 환자에서 Milled-bar를 이용한 지르코니아 가철성 보철물 수복 증례

  • Jin-Young Park (Department of Prosthodontics, School of Dentistry, Pusan National University) ;
  • Chang-Mo Jeong (Department of Prosthodontics, School of Dentistry, Pusan National University) ;
  • Mi-Jung Yun (Department of Prosthodontics, School of Dentistry, Pusan National University) ;
  • Jung-Bo Huh (Department of Prosthodontics, School of Dentistry, Pusan National University) ;
  • So-Hyoun Lee (Department of Prosthodontics, School of Dentistry, Pusan National University) ;
  • Dae-Sung Kim (Department of Prosthodontics, School of Dentistry, Pusan National University)
  • 박진영 (부산대학교 치의학전문대학원 치과보철학교실) ;
  • 정창모 (부산대학교 치의학전문대학원 치과보철학교실) ;
  • 윤미정 (부산대학교 치의학전문대학원 치과보철학교실) ;
  • 허중보 (부산대학교 치의학전문대학원 치과보철학교실) ;
  • 이소현 (부산대학교 치의학전문대학원 치과보철학교실) ;
  • 김대성 (부산대학교 치의학전문대학원 치과보철학교실)
  • Received : 2023.10.12
  • Accepted : 2023.10.23
  • Published : 2024.07.31
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Abstract

In patients with severe alveolar bone resorption on mandibular anterior edentulous areas, it can be difficult to place implants in the location for crowns, and to create the fixed prosthesis having an adequate emergence profile or embrasure, which makes maintenance difficult. Fabricating a removable zirconia prosthesis with a milled bar on poorly positioned implants can be a good option because of easy maintenance. In this case, the patient had severe bone resorption on mandibular anterior region, and large vertical space. We report on the aesthetical and easy-to-maintain results by placing two implants and fabricating a zirconia prosthesis using milled bar.

치조골의 흡수가 심한 하악 전치 부분 무치악 환자의 경우 치아가 위치해야 할 곳에 임플란트를 식립하기 어렵고, 적절한 출현윤곽이나 치간 공극을 가진 고정성 보철물을 만들 수 없어 유지관리가 어려워질 것이다. 적절한 위치에 놓여 있지 못한 임플란트 고정체에 절삭 가공 바(milled bar)를 이용한 지르코니아 보철물로 제작하는 것은 하나의 좋은 치료가 될 수 있고, 이 경우 유지 관리가 용이하도록 탈부착이 가능한 가철성 형태로도 제작할 수 있다. 이번 증례의 환자는 하악 전치부 무치악부에 심한 치조골 흡수를 보였던 환자로, 상악 전치부와의 수직적 공간이 매우 큰 상태였고 이상적인 곳에 임플란트 고정체를 식립할 수 없었다. 식립할 수 있는 곳에 2개의 임플란트를 심고 절삭 바와 어태치먼트를 사용하여 지르코니아 가철성 보철물을 제작하여 심미적으로 만족스럽고 유지 관리가 용이한 결과를 얻었기에 보고하는 바이다.

Keywords

Acknowledgement

This paper was supported by the grant of clinical research funding of the Dental Hospital of Pusan National University in 2022.

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