Abstract
Acoustic emission (AE) characteristics according to a variety of Configuration factor (C-factor) of methacrylate-based composite resin (Clearfil AP-X, Kuraray) and silorane-based composite resin (Filtek P90, 3M ESPE) during dental restoration were investigated in combination with the Finite element stress analysis (FESA). AE measurement results showed that most micro-cracks occurred within 1 min after the light irradiation started. As the C-factor increased, average cumulative AE hits and average cumulative AE energy increased. Those AE parameters for AP-X with high shrinkage strain were higher than P90 with low shrinkage strain. FESA results showed that the maximum shrinkage stress appeared at the resin/tooth interface on the specimen surface. The stress of AP-X was bigger than that of P90, which coincided with the AE behaviors with increasing C-factor.
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Jung-Hoon Park is affiliated to Department of Mechanical Engineering, Graduate School, Hanyang University, Korea. His research area is composite analysis and material design.
Ja-Uk Gu is affiliated to Department of Mechanical Engineering, Graduate School, Hanyang University, Korea. He is currently working in Samsung Electronics. His research area is a nondestructive analysis of composites.
Nak-Sam Choi received his Ph.D. degree from Kyushu University, Japan, 1990. He is currently a Full-Professor in the Department of Mechanical Engineering, Hanyang University, Korea. His research interests include the fatigue behavior of materials and composites, acoustic emission analysis, experimental methods for composites manufacturing and reliability analysis.
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Park, JH., Gu, JU. & Choi, NS. Acoustic emission characteristics of methacrylate-based composite and silorane-based composite during dental restoration according to a variety of C-factor. J Mech Sci Technol 31, 4067–4072 (2017). https://doi.org/10.1007/s12206-017-0801-1
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DOI: https://doi.org/10.1007/s12206-017-0801-1