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KMID : 0362420220600010009
Journal of Korean Academy of Prosthodontics
2022 Volume.60 No. 1 p.9 ~ p.18
Literature review on the experimental method and interpretation of the edge chipping test (ECT)
Song Min-Gyu

Ko Kyung-Ho
Huh Yoon-Hyuk
Park Chan-Jin
Cho Lee-Ra
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.
KEYWORD
Ceramic, Chipping fracture, Edge chipping test, Flexural strength, Fracture toughness
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