The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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Full-mouth rehabilitation with CAD/CAM monolithic zirconia in dentinogenesis imperfecta: a case report

상아질 형성 부전증 환자에서 CAD/CAM 단일 구조 지르코니아를 이용한 완전구강회복 증례

  • Kim, Min-Kyoo (Department of Prosthodontics and Dental Research Institute, School of Dentistry, Seoul National University) ;
  • Kim, Sung-Hun (Department of Prosthodontics and Dental Research Institute, School of Dentistry, Seoul National University) ;
  • Lee, Jai-Bong (Department of Prosthodontics and Dental Research Institute, School of Dentistry, Seoul National University) ;
  • Han, Jung-Suk (Department of Prosthodontics and Dental Research Institute, School of Dentistry, Seoul National University) ;
  • Yeo, In-Sung (Department of Prosthodontics and Dental Research Institute, School of Dentistry, Seoul National University) ;
  • Ha, Seung-Ryong (Department of Dentistry, Ajou University, School of Medicine)
  • 김민규 (서울대학교 치과대학 치과보철학교실) ;
  • 김성훈 (서울대학교 치과대학 치과보철학교실) ;
  • 이재봉 (서울대학교 치과대학 치과보철학교실) ;
  • 한중석 (서울대학교 치과대학 치과보철학교실) ;
  • 여인성 (서울대학교 치과대학 치과보철학교실) ;
  • 하승룡 (아주대학병원 치과학교실)
  • Received : 2014.06.10
  • Accepted : 2014.07.21
  • Published : 2014.10.31
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Abstract

Dentinogenesis Imperfecta, with a high incidence rate of 1 : 6 - 8000, is inherited by autosomal dominant genetic transmission. This dental disorder causes discoloration of the teeth and the enamel and dentin show hypoplastic or hypocalcified defects which lead to frequent fractures and rapid attrition. Therefore, timely treatment is necessary for the preservation of the remaining teeth. In this particular case, a 19-year-old patient suffering from Type 1 dentinogenesis imperfecta showed signs of brownish hued teeth with multiple fractures, a loss of vertical dimension, excessive interdental space in the maxillary anterior teeth, and a lack of 5 posterior teeth. To improve the esthetic appearance of the anterior teeth, the vertical dimension was increased. Resin caps were used to alleviate the difficulty of taking an impression of multiple teeth at once. Monolithic zirconia materials used in this case showed high fracture strength and the ability to mask the discoloration of the teeth and therefore, functionally and esthetically favorable results were achieved.

상아질 형성 부전증은 발병율이 1 : 6 - 8000정도인 상염색체 우성 유전질환으로 변색된 치아, 저 형성, 저 석회화된 법랑질과 상아질로 인해 잦은 파절이 발생하고 교모가 급속도로 진행된다. 따라서 적절한 시기에 적극적인 치료를 하는 것이 잔존 치아를 오래 보존할 수 있는 유일한 방법이다. 본 증례의 환자는 제1형 상아질 형성 부전증을 가지고 있는 19세 남자로 갈색 빛의 치아와 곳곳에 파절된 법랑질, 약간의 수직 고경 상실, 상하 전치부치간 공간 존재, 구치부 5개의 치아 상실을 보이고 있었다. 전치부 심미성과 약간의 수직 고경 상실을 고려해 수직 고경을 증가시켰다. 인상 채득 과정에서 다수치아 인상의 어려운 점을 레진 캡을 이용하여 극복하는 방법을 사용하였고 치아 변색을 가리고 강한 강도를 가지는 단일 구조 지르코니아를 이용한 고정성 보철물로 최종 수복하였다. 일련의 치료 과정을 통하여 심미적, 기능적으로 만족할 만한 결과를 얻었기에 보고하는 바이다.

Keywords

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