Enamel wetness effects on bond strength using different adhesive systems

To evaluate, through the application of different dentin bonding systems, the influence of wetness on shear bond strength in enamel. This study evaluated three etch-and-rinse adhesive systems (Scotchbond MP [used with and without primer]; Singlebond; and Prime&Bond 2.1) and two self-etching adhe...

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Bibliographic Details
Published in:	Operative dentistry Vol. 36; no. 3; pp. 274 - 280
Main Authors:	Furuse, A Y, Cunha, L F, Moresca, R, Paganeli, G, Mondelli, R F L, Mondelli, J
Format:	Journal Article
Language:	English
Published:	United States 01-05-2011
Subjects:	Acetone - chemistry Acid Etching, Dental - methods Air Animals Bisphenol A-Glycidyl Methacrylate - chemistry Cattle Composite Resins - chemistry Dental Bonding Dental Enamel - ultrastructure Dental Materials - chemistry Dental Stress Analysis - instrumentation Dentin-Bonding Agents - chemistry Dentistry Desiccation Materials Testing Polymethacrylic Acids - chemistry Resin Cements - chemistry Shear Strength Stress, Mechanical Temperature Time Factors Water - chemistry
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Summary:	To evaluate, through the application of different dentin bonding systems, the influence of wetness on shear bond strength in enamel. This study evaluated three etch-and-rinse adhesive systems (Scotchbond MP [used with and without primer]; Singlebond; and Prime&Bond 2.1) and two self-etching adhesive systems (Clearfil SE Bond; and Xeno IV). Flat bovine enamel surfaces were either air-dried for 30 seconds or blotted with absorbent paper after acid-etching for the conventional bonding agents or before the application of self-etching bonding agents. The resin composite EsthetX was bonded to flat surfaces that had been treated with one of the adhesives, following the manufacturer's instructions. After being stored in water at 37°C for one week, bonded specimens were broken in shear. Data were evaluated with two-way analysis of variance (ANOVA) and Student-Newman-Keuls tests (α=0.05). For comparing each condition individually, regardless of the adhesive or wetness condition, a one-way ANOVA and a Student-Newman-Keuls test (α=0.05) were applied. The two-way ANOVA showed significant differences among adhesive systems. An interaction effect was also observed (p<0.05), but wetness did not influence shear bond strength (p=0.98). The one-way ANOVA showed that the all-in-one adhesive was the only material influenced by the presence of water at the enamel's surface. The all-in-one adhesive behaved differently depending on whether the enamel surface was dry or wet.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0361-7734 1559-2863
DOI:	10.2341/10-163-L