Publication: Bonding measurement —Strength and fracture mechanics approaches
Issued Date
2017-01-01
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ISSN
18811361
02874547
02874547
Other identifier(s)
2-s2.0-85026374523
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Mahidol University
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SCOPUS
Bibliographic Citation
Dental Materials Journal. Vol.36, No.4 (2017), 497-502
Suggested Citation
Chuchai Anunmana, Wiroj Wansom Bonding measurement —Strength and fracture mechanics approaches. Dental Materials Journal. Vol.36, No.4 (2017), 497-502. doi:10.4012/dmj.2016-193 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/42450
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Title
Bonding measurement —Strength and fracture mechanics approaches
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Abstract
© 2017, Japanese Society for Dental Materials and Devices. All rights reserved. This study investigated the effect of cross-sectional areas on interfacial fracture toughness and bond strength of bilayered dental ceramics. Zirconia core ceramics were veneered and cut to produce specimens with three different cross-sectional areas. Additionally, monolithic specimens of glass veneer were also prepared. The specimens were tested in tension until fracture at the interface and reported as bond strength. Fracture surfaces were observed, and the apparent interfacial toughness was determined from critical crack size and failure stress. The results showed that cross-sectional area had no effect on the interfacial toughness whereas such factor had a significant effect on interfacial bond strength. The study revealed that cross-sectional area had no effect on the interfacial toughness, but had a significant effect on interfacial bond strength. The interfacial toughness may be a more reliable indicator for interfacial bond quality than interfacial bond strength.