Publication: Effect of LED light-curing time for the adhesive resin on the modulus of elasticity
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Issued Date
2007-06-01
Resource Type
ISSN
08948275
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2-s2.0-34547365612
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Mahidol University
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SCOPUS
Bibliographic Citation
American Journal of Dentistry. Vol.20, No.3 (2007), 139-141
Suggested Citation
Pisol Senawongse, Choltacha Harnirattisai, Masayuki Otsuki, Junji Tagami Effect of LED light-curing time for the adhesive resin on the modulus of elasticity. American Journal of Dentistry. Vol.20, No.3 (2007), 139-141. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/24417
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Title
Effect of LED light-curing time for the adhesive resin on the modulus of elasticity
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Abstract
Purpose: To evaluate the elastic modulus of successive layers where an adhesive resin was cured by different light-curing times. Methods: Eighty dentin discs which were 2 mm thick were prepared from 40 sound third molars. The dentin discs were further divided into four groups and bonded with 3M Single Bond 2 and cured with an LED for 5,10,15 and 20s. Bonded specimens were restored with a microhybrid resin composite. Specimens were cut perpendicular to the resin dentin interface, embedded in epoxy resin, and polished. Polished specimens were evaluated for the elastic modulus at the layer of dentin, hybrid layer, adhesive resin, and resin composite at 24 hours after preparation. Results: Light-curing times influenced the elastic modulus of hybrid layer and adhesive resin. The significant differences of elastic modulus among successive layers were found. The results suggested that extension of light-curing times of adhesive resin from 5 to 20 seconds increased the mechanical properties of the resin dentin interface.