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http://dx.doi.org/10.3795/KSME-A.2011.35.2.169

Time-Based Characteristics of Acoustic Emission During Dental Composite Restoration  

Gu, Ja-Uk (Dept. of Mechanical Engineering, Hanyang Univ.)
Choi, Nak-Sam (Dept. of Mechanical Engineering, Hanyang Univ.)
Arakawa, Kazuo (Research Institute for Applied Mechanics, Kyushu Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.35, no.2, 2011 , pp. 169-174 More about this Journal
Abstract
Acoustic emission (AE) signals were detected and analyzed in real time during the polymerization shrinkage of composite resin restoration in an artificial dental ring with a class I cavity. Most AE hit events were observed in the initial curing period of the 1st region with high contraction rate. The range of the $2^{nd}$ region for the stainless steel specimen was shorter than that for the PMMA specimen but longer than that for the human dentin specimen. AE hit events showed a blast-type signal having an amplitude in the range of 25.45 dB and a frequency band of 100.200 kHz or 240.300 kHz. These values of amplitude and frequency indicated the fracture of resin or of the adhesive layer.
Keywords
Composite Resin; Polymerization Shrinkage; Contraction Stress; Acoustic Emission;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 0
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