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Literature review on the experimental method and interpretation of the edge chipping test (ECT)

Edge chipping test (ECT)의 실험방법과 해석에 관한 문헌고찰

  • Song, Min-Gyu (Department of Prosthodontics, College of Dentistry, Gangneung-Wonju National University) ;
  • Ko, Kyung-Ho (Department of Prosthodontics, College of Dentistry, Gangneung-Wonju National University) ;
  • Huh, Yoon-Hyuk (Department of Prosthodontics, College of Dentistry, Gangneung-Wonju National University) ;
  • Park, Chan-Jin (Department of Prosthodontics, College of Dentistry, Gangneung-Wonju National University) ;
  • Cho, Lee-Ra (Department of Prosthodontics, College of Dentistry, Gangneung-Wonju National University)
  • 송민규 (강릉원주대학교 치과대학 보철학교실 및 구강과학연구소) ;
  • 고경호 (강릉원주대학교 치과대학 보철학교실 및 구강과학연구소) ;
  • 허윤혁 (강릉원주대학교 치과대학 보철학교실 및 구강과학연구소) ;
  • 박찬진 (강릉원주대학교 치과대학 보철학교실 및 구강과학연구소) ;
  • 조리라 (강릉원주대학교 치과대학 보철학교실 및 구강과학연구소)
  • Received : 2021.08.24
  • Accepted : 2021.10.05
  • Published : 2022.01.28

Abstract

In vitro studies are essential to predict the clinical performance of ceramic widely used as restorative materials. Traditional experiments such as fracture toughness and flexural strength have been used to evaluate the properties of brittle ceramics. However, these experiments have a limitation that the load conditions, failure patterns, and load values at which failure occurs are not similar to human occlusal force ranges or clinical failures. On the other hand, the edge chipping test (ECT), which was recently introduced to study chipping fracture of ceramics, has similar failure patterns to clinical trials. In addition, the failure loads from ECT were similar to human occlusal force. ECT can be usefully used in the study of ceramic properties. In this literature review, a more clinically meaningful experimental study of ceramics by examining the meaning and limitations of traditional ceramic failure tests and comparing them with ECT.

임상에서 심미적 수복에 사용되는 세라믹 재료들은 성능에 대한 예측을 위해 실험실 연구가 필수적이다. 취성을 가진 세라믹의 물성 평가를 위해서는 파괴인성과 굽힘강도 등 전통적인 실험들이 사용되어 왔다. 하지만 이러한 실험은 실험의 하중조건, 실패 양상, 실패가 일어나는 하중 값이 사람의 교합력 범위나 임상에서의 실패와 유사하지 않다는 한계점이 있다. 반면 최근에 세라믹 부분파절을 연구하기 위해 도입된 edge chipping test (ECT)는 임상과 실패 양상이 비슷하고, 실패하중값도 사람의 교합력과 유사하여 세라믹 물성 연구에 유용하게 사용될 수 있다. 이 문헌고찰에서는 전통적인 세라믹 하중시험들의 의미와 한계점들을 살펴보고 ECT와 비교함으로써 보다 임상적으로 의미 있는 세라믹 재료들의 실험실 연구에 대해 고찰하고자 한다.

Keywords

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