Publication: Interfacial fracture resistance of ceramic-resin composite bilayer.
Accepted Date
2013-09-02
Issued Date
2013-09
Resource Type
Language
eng
ISSN
0125-5614 (printed)
Rights
Mahidol University
Rights Holder(s)
Faculty of Dentistry Mahidol University
Bibliographic Citation
Asvanund C, Triwatana P, Suputtamongkol K, Thepchai J. Interfacial fracture resistance of ceramic-resin composite bilayer. M Dent J. 2013; 33(3): 144-52.
Suggested Citation
Chanavut Asvanund, ชนวุตม์ อัศวนันท์, Premwara Triwatana, เปรมวรา ตรีวัฒนา, Kallaya Suputtamongkol, กัลยา ศุพุทธมงคล, Jutamast Thepchai, จุฑามาศ เทพไชย Interfacial fracture resistance of ceramic-resin composite bilayer.. Asvanund C, Triwatana P, Suputtamongkol K, Thepchai J. Interfacial fracture resistance of ceramic-resin composite bilayer. M Dent J. 2013; 33(3): 144-52.. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/1054
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Title
Interfacial fracture resistance of ceramic-resin composite bilayer.
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Abstract
Objective: The purpose of this study was to evaluate the relationship
between interfacial crack lengths and Vickers indentation loads on
ceramic-resin composite specimens.
Materials and methods: Five heat-pressed ceramic specimens, with
dimension of 3x4x20mm, were fabricated according to the manufacturer’s
instructions. For each ceramic bar, the bonding surface was acid-etched,
silanized and bonded with hybrid resin composite. The surface of bonded
specimen used for indentation was polished through 0.01 mm alumina
paste. The diamond pyramidal indenter was used for loading on a ceramic
surface closed to the interface. Loads ranging between 0.98 - 9.8 N were
used for indentation. The interfacial debonding length of each indentation
load was measured. Pearson Correlation analysis was performed for a
statistical analysis.
Results: From Pearson Correlations, there was a positive relationship
between the interfacial crack size and Vickers indentation load (R2
= 0.963).
The result from linear regression analysis indicated that the interfacial crack
length was directly related to the indenter load.
Conclusion: There was a linear relationship between interfacial crack
lengths and indentation loads. The further development of a model
analysis for bilayered structure should be useful for characterizing the
interfacial fracture resistance of dental bilayered specimens.