Publication: Gradual dehydration affects the mechanical properties and bonding outcome of adhesives to dentin
Issued Date
2019-01-01
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ISSN
18811361
02874547
02874547
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2-s2.0-85067129387
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Mahidol University
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SCOPUS
Bibliographic Citation
Dental Materials Journal. Vol.38, No.3 (2019), 361-367
Suggested Citation
A. F.M.Almas Chowdhury, Pipop Saikaew, Mariko Matsumoto, Hidehiko Sano, Ricardo M. Carvalho Gradual dehydration affects the mechanical properties and bonding outcome of adhesives to dentin. Dental Materials Journal. Vol.38, No.3 (2019), 361-367. doi:10.4012/dmj.2018-142 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/50744
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Title
Gradual dehydration affects the mechanical properties and bonding outcome of adhesives to dentin
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Abstract
© 2019, Japanese Society for Dental Materials and Devices. All rights reserved. This study evaluated the effects of dehydration on the mechanical properties of adhesive resins and dentin, and on the microtensile bond strength (μTBS) of adhesives. Third molars were randomly bonded with Clearfil Mega Bond (MB) or Clearfil SE Bond 2 (SE). After water-storage (37°C; 24 h), μTBS was obtained in ‘wet’ (tested after 5 min of removal from storage) and ‘dehydrated’ (tested after 10, 15 min and 24 h) conditions by a universal tester (crosshead speed: 1 mm/min). Data were analyzed by two-way ANOVA and Duncan’s test. Hardness (H), Elastic modulus (E) and weight-loss of dentin beams and adhesive-resin discs were also monitored over time and analyzed by one-way repeated measures ANOVA and Bonferroni’s test (α=0.05). Significant differences in bond strength were observed for adhesives and for conditions. Except for dentin’s E, dehydration caused significant gradual changes in the H, E and weight of adhesive resins and dentin (p<0.05).