The strategies used for curing universal adhesives affect the micro-bond strength of resin cement used to lute indirect resin composites to human dentin

• Main Authors: Daisuke Araoka, Keiichi Hosaka, Masatoshi Nakajima, Richard Foxton, Ornnicha Thanatvarakorn, Taweesak Prasansuttiporn, Ayaka Chiba, Kento Sato, Masahiro Takahashi, Masayuki Otsuki, Junji Tagami
• Format: Journal
• Published: 2018
• Subjects: Dentistry; Materials Science
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85048306655&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/58617
• Institution: Chiang Mai University

© 2018, Japanese Society for Dental Materials and Devices. All rights reserved. We evaluated the effect of different curing strategies for universal adhesives on micro-tensile bond strength (μTBS) between resin cement and dentin and/or between resin cement and indirect resin composite. Flat coronal dentin surfaces and composite resin disks were pretreated with silane-containing universal adhesives, with or without light-curing on the dentin-side and/or composite resin disk-side. Resin disks were luted onto the pretreated dentin surfaces with the corresponding dual-cure adhesive resin cements and light-cured, and cut into beams after 24-h water storage. After 0 or 10,000 thermocycles (5ºC/55ºC) in a water bath, the μTBS of the composite resin disk–dentin beam was tested. The μTBS was highest when universal adhesives were applied to both the dentin-and the indirect composite resin disk-side, followed by light-curing. Thermocycling decreased μTBS in all but the Scotchbond Universal-treated group, with light-curing on both sides. The effect of curing strategies is dependent upon the materials.