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http://dx.doi.org/10.4191/KCERS.2004.41.2.143

Mechanical Properties and Microstructure of Dental Heat-Pressable Glass-Ceramics  

이해형 (단국대학교 치과대학 치과생체재료학)
이병택 (공주대학교 신소재공학부)
Publication Information
Journal of the Korean Ceramic Society / v.41, no.2, 2004 , pp. 143-150 More about this Journal
Abstract
Biaxial flexure strength (ball-on-3-ball) and fracture toughness (indentation microfracture) of heat-pressable glass-ceramics for dental use were investigated in this study. Crystal phase and microstructure of glass-ceramics were analyzed by XRD. SEM, and TEM. Crack propagation in specimens was not effectively arrested by dispersed crystalline particles. However, higher degree of crystallization probably contributes to strengthening of glass-ceramics. Better clinical reliability can be expected from lithium disilicate glass-ceramic because of its significantly higher biaxial flexure strength and fracture toughness.
Keywords
Dental materials; Glass-ceramics; Heat-pressing; Biaxial strength; Fracture toughness;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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