Acoustic emission characteristics of methacrylate-based composite and silorane-based composite during dental restoration according to a variety of C-factor

• Published in: Journal of mechanical science and technology Vol. 31; no. 9; pp. 4067 - 4072
• Main Authors: Park, Jung-Hoon, Gu, Ja-Uk, Choi, Nak-Sam
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Steel Construction 01.09.2017; Springer Nature B.V; 대한기계학회
• Subjects: Acoustic emission; Composite materials; Control; Cracks; Dental materials; Dynamical Systems; Engineering; Finite element method; Industrial and Production Engineering; Light irradiation; Mechanical Engineering; Microcracks; Resins; Shrinkage; Strain; Stress analysis; Vibration; 기계공학; Finite element method; Acoustic emission; Dental composite resin; Configuration factor; Dental restoration
• ISSN: 1738-494X; 1976-3824
• DOI: 10.1007/s12206-017-0801-1

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.