Evaluating the shear bond strength of enamel and dentin with or without etching: a comparative study between dimethacrylate-based and silorane-based adhesives
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Evaluating the shear bond strength of enamel and dentin with or without etching: a comparative study between dimethacrylate-based and silorane-based adhesives

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Evaluating the shear bond strength of enamel and dentin with or without etching: a comparative study between dimethacrylate-based and silorane-based adhesives

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dc.contributor.author Hajizadeh, Hila es
dc.contributor.author Nemati Karimooy, Atefeh es
dc.contributor.author Nasseh, Atefeh es
dc.contributor.author Rahmanpour, Naim es
dc.date.accessioned 2016-01-20T12:12:19Z
dc.date.available 2016-01-20T12:12:19Z
dc.date.issued 2015 es
dc.identifier.uri http://hdl.handle.net/10550/50169
dc.source Hajizadeh, Hila ; Nemati Karimooy, Atefeh ; Nasseh, Atefeh ; Rahmanpour, Naim. Evaluating the shear bond strength of enamel and dentin with or without etching: a comparative study between dimethacrylate-based and silorane-based adhesives. En: Journal of Clinical and Experimental Dentistry, 2015, Vol. 7, No. 5: 563-568 es
dc.subject Odontología es
dc.subject Ciencias de la salud es
dc.title Evaluating the shear bond strength of enamel and dentin with or without etching: a comparative study between dimethacrylate-based and silorane-based adhesives es
dc.type info:eu-repo/semantics/article en
dc.type info:eu-repo/semantics/publishedVersion en
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.description.abstractenglish Background: Silorane-based composites and their specific self-etch adhesive were introduced to conquest the polymerization shrinkage of methacrylate-based composites. It has been shown that additional etching of enamel and dentin can improve the bond strength of self-etch methacrylate-based adhesives but this claim is not apparent about silorane-based adhesives. Our objective was to compare the shear bond strength (SBS) of enamel and dentin between silorane-based adhesive resin and a methacrylate-based resin with or without additional etching. Material and Methods: 40 sound human premolars were prepared and divided into two groups: 1- Filtek P60 composite and Clearfil SE Bond adhesive; 2- Filtek P90 composite and Silorane adhesive. Each group divided into two subgroups: with or without additional etching. For additional etching, 37% acid phosphoric was applied before bonding procedure. A cylinder of the composite was bonded to the surface. After 24 hours storage and 500 thermo cycling between 5-55°C, shear bond strength was assessed with the cross head speed of 0.5 mm/min. Then, bonded surfaces were observed under stereomicroscope to determine the failure mode. Data were analyzed with two-way ANOVA and Fischer exact test. Results: Shear bond strength of Filtek P60 composite was significantly higher than Filtek P90 composite both in enamel and dentin surfaces ( p <0.05). However, additional etching had no significant effect on shear bond strength in enamel or dentin for each of the composites ( p >0.05). There was no interaction between composite type and additional etching ( p >0.05). Failure pattern was mainly adhesive and no significant correlation was found between failure and composite type or additional etching ( p >0.05). Conclusions: Shear bond strength of methacrylate-based composite was significantly higher than silorane-based composite both in enamel and dentin surfaces and additional etching had no significant effect on shear bond strength in enamel or dentin for each of the composites. The mode of failure had no meaningful relation to the type of composite and etching factor. es

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