TY - JOUR
T1 - Influence of photoirradiation conditions on dentin bond durability and interfacial characteristics of universal adhesives
AU - Hirai, Kazutaka
AU - Tsujimoto, Akimasa
AU - Nojiri, Kie
AU - Ueta, Hirofumi
AU - Takamizawa, Toshiki
AU - Barkmeier, Wayne W.
AU - Latta, Mark A.
AU - Miyazaki, Masashi
N1 - Funding Information:
This work was partly supported by Grant-in-Aid for Young Scientists (B) 25861813 from the Japan Society for the Promotion of Science. This project was also partly supported by the Sato Fund and by a grant from the Dental Research Center of the Nihon University School of Dentistry, Japan.
PY - 2017
Y1 - 2017
N2 - The influence of photoirradiation conditions on dentin bond durability and interfacial characteristics of universal adhesives was investigated. Universal adhesives were applied to the dentin surfaces and photoirradiated with 100 mW/cm2 for 40 s, 200 mW/cm2 for 20 s, and 400mW/cm2 for 10 s. A resin composite was bonded to dentin to determine shear bond strength after 24 h water storage and 30,000 thermal cycles, and water contact angle of cured adhesive were measured by the sessile drop method. Greater dentin bond strengths after 24 h water storage and 30,000 thermal cycles were achieved under these conditions at light intensity exceeding 200 mW/cm2. Universal adhesives photoirradiated above 200 mW/cm2 exhibited significantly higher water contact angles than those at 100 mW/cm2. The results of this study suggested that the photoirradiation conditions affect the dentin bond durability and interfacial characteristics of universal adhesives even at the same total energy.
AB - The influence of photoirradiation conditions on dentin bond durability and interfacial characteristics of universal adhesives was investigated. Universal adhesives were applied to the dentin surfaces and photoirradiated with 100 mW/cm2 for 40 s, 200 mW/cm2 for 20 s, and 400mW/cm2 for 10 s. A resin composite was bonded to dentin to determine shear bond strength after 24 h water storage and 30,000 thermal cycles, and water contact angle of cured adhesive were measured by the sessile drop method. Greater dentin bond strengths after 24 h water storage and 30,000 thermal cycles were achieved under these conditions at light intensity exceeding 200 mW/cm2. Universal adhesives photoirradiated above 200 mW/cm2 exhibited significantly higher water contact angles than those at 100 mW/cm2. The results of this study suggested that the photoirradiation conditions affect the dentin bond durability and interfacial characteristics of universal adhesives even at the same total energy.
UR - http://www.scopus.com/inward/record.url?scp=85037528576&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85037528576&partnerID=8YFLogxK
U2 - 10.4012/dmj.2016-019
DO - 10.4012/dmj.2016-019
M3 - Article
C2 - 28652552
AN - SCOPUS:85037528576
VL - 36
SP - 747
EP - 754
JO - Dental Materials Journal
JF - Dental Materials Journal
SN - 0287-4547
IS - 6
M1 - JST.JSTAGE/dmj/2016-019
ER -