PMID: 11928144Apr 4, 2002Paper

Layer thickness of dental adhesives. Relation between layer thickness and viscosity

Nederlands tijdschrift voor tandheelkunde
R H KuijsF J Roeters

Abstract

To investigate the viscosity of two dental adhesives in relation to the adhesive layer thickness. In vitro study. The viscosity of several dental adhesives has been determined with a reogoneometer. Both a high and a low viscous adhesive was used to restore class II preparations. These restorations were sectioned and the thickness of the adhesive layer was measured on several defined locations. A statistical analysis was performed. The high viscous adhesive resulted in a thinner layer along the cervical outline of the restoration. With both materials pooling occurred at the line angles of the preparation. On the flat surfaces of the preparations there was a layer of even thickness. The differences in thickness of the adhesive layer as often seen on radiographs cannot be explained solely by the use of adhesives with a different viscosity.

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