Structure of Dental Resin-Based Adhesive Materials

Abstract:

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This study aimed to show that the polymerization contraction of dental light cured resin-based materials, when it was used as adhesives on hard substrate, produces voids at the material/substrate interface. Two liner/base systems, one glass-ionomer, one restorative composite resins and two compomers were cured using mirror-like glass slide as a compliance-free reference substrate. The adhesive surface was analyzed by atomic force microscopy, and the polymerization contraction of bulk material was tested by laser beam scanning method. Nanoperiodic structure of 3D images, section analysis and roughness characteristics (Ra and Rz)) indicated that polymerization contraction produced voids at the interface. In visible light-cured (VLC) materials, the interface porosity decreased when an irradiation pause was carried out during gelation.

Info:

Periodical:

Materials Science Forum (Volumes 492-493)

Edited by:

Omer Van der Biest, Michael Gasik, Jozef Vleugels

Pages:

183-188

Citation:

L. Fano et al., "Structure of Dental Resin-Based Adhesive Materials", Materials Science Forum, Vols. 492-493, pp. 183-188, 2005

Online since:

August 2005

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Price:

$38.00

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