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Characterization of an Experimental Two-Step Self-Etch Adhesive's Bonding Performance and Resin-Dentin Interfacial Properties

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Title: Characterization of an Experimental Two-Step Self-Etch Adhesive's Bonding Performance and Resin-Dentin Interfacial Properties
Authors: Chowdhury, Abu Faem Mohammad Almas Browse this author →KAKEN DB
Alam, Arefin Browse this author
Yamauti, Monica Browse this author
Alvarez Lloret, Pedro Browse this author
Saikaew, Pipop Browse this author
Carvalho, Ricardo Marins Browse this author
Sano, Hidehiko Browse this author →KAKEN DB
Keywords: dentin bonding
two-step self-etch adhesive
universal adhesive
microtensile bond strength
resin-dentin interface
scanning electron microscopy
ultra microhardness tester
elastic modulus
Issue Date: 25-Mar-2021
Publisher: MDPI
Journal Title: Polymers
Volume: 13
Issue: 7
Start Page: 1009
Publisher DOI: 10.3390/polym13071009
PMID: 33805907
Abstract: This study evaluated an experimental two-step self-etch adhesive (BZF-29, BZF) by comparing it with a reference two-step self-etch adhesive (Clearfil Megabond 2, MB) and a universal adhesive (G-Premio Bond, GP) for microtensile bond strength (mu TBS) and resin-dentin interfacial characteristics. Twenty-four human third molars were used for the mu TBS test. Bonded peripheral dentin slices were separated to observe the resin-dentin interface and measure the adhesive layer thickness with SEM. mu TBS data of the central beams were obtained after 24 h and 6 months of water storage. Fracture modes were determined using a stereomicroscope and SEM. Nine additional third molars were used to determine the elastic modulus (E) employing an ultra microhardness tester. Water storage did not affect mu TBS of the tested adhesives (p > 0.05). mu TBS of BZF and MB were similar but significantly higher than GP (p < 0.05). BZF achieved the highest adhesive layer thickness, while GP the lowest. E of BZF and MB were comparable but significantly lower than GP (p < 0.05). Except for GP, the predominant fracture mode was nonadhesive. The superior bonding performance of BZF and MB could be attributed to their better mechanical property and increased adhesive thickness imparting better stress relief at the interface.
Type: article
Appears in Collections:歯学院・歯学研究院 (Graduate School of Dental Medicine / Faculty of Dental Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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