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Updated: Jul 13, 2026

Application of Light-cured Dental Adhesive Resin for Mounting Electrodes or Microdialysis Probes in Chronic Experiments
Published on: July 30, 2007
Effect of LED light-curing time for the adhesive resin on the modulus of elasticity
Pisol Senawongse1, Choltacha Harnirattisai, Masayuki Otsuki
1Department of Operative Dentistry, Faculty of Dentistry, Mahidol University, 6 Yothi Street, Phayathai, Bangkok, 10400, Thailand. dtpse@mahidol.ac.th
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.
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