Dental Materials Journal
Online ISSN : 1881-1361
Print ISSN : 0287-4547
ISSN-L : 0287-4547
Original Paper
Influence of surface treatment of glass-ionomers on surface free energy and bond strength of resin composite
Eiichiro OTSUKAAkimasa TSUJIMOTOToshiki TAKAMIZAWATetsuya FURUICHIMiho YOKOKAWAKeishi TSUBOTAMasashi MIYAZAKI
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2013 Volume 32 Issue 5 Pages 702-708

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Abstract
The purpose of this study was to determine the influence of surface treatment of glass-ionomer (GIC) on bond strength of resin composite and surface free energies. Specimens were prepared and divided into three groups as follows: without pretreatment (control), phosphoric acid etching, and air-abrasion. Adhesive was applied and resin composite was bonded. For conventional GIC, acid etching or air-abrasion increased bond strength (8.5–8.8 MPa) when compared with controls (4.7 MPa); however, RMGIC resulted in significantly lower bond strengths (10.3–15.8 MPa) than in controls (14.2–20.5 MPa). The value of the γS component increased when conventional GIC was treated with phosphoric acid or air-abrasion (60.1–60.5 mJ•m−2) when compared with controls (52.8 mJ•m–2).These results indicate that surface treatment of conventional GIC promoted higher bond strength to resin composite and higher Lewis-base components, but decreased bond strength for RMGIC.
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© 2013 The Japanese Society for Dental Materials and Devices
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