Dentinal adhesion and histomorphology of two dentinal bonding agents under the influence of eugenol.
This study examined the influence of eugenol on the dentinal adhesion of an enamel-dentin bonding agent that removes the smear layer (total-etch technique) and a system that partially dissolves the smear layer (self-conditioning adhesive system). The tensile bond strength was measured on flat, dentinal surfaces after application and removal of pure eugenol for 15 minutes and a eugenol-containing temporary luting agent for 24 hours. In addition, the resin-dentin interface was evaluated with confocal laser scanning microscopy. Dentinal adhesion was found to be significantly reduced after the application of eugenol when a dentin bonding agent that dissolves the smear layer was used. Under confocal laser scanning microscopy, the resin-dentin interdiffusion zone of both adhesive was found to be changed, not only after application of eugenol but also after application of a eugenol-containing temporary luting agent.
Mayer
T
T
Department of Restorative Dentistry, Ruprecht-Karls University of Heidelberg, Germany.
Pioch
T
T
Duschner
H
H
Staehle
H J
HJ
D000268:Adhesiveness; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003799:Dental Stress Analysis; D003804:Dentin / Q000648:ultrastructure; D003806:Dentin Permeability; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D005054:Eugenol / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D018613:Microscopy, Confocal; D016369:Smear Layer; D018709:Statistics, Nonparametric; D013718:Tensile Strength
D003188:Composite Resins; D017220:Dentin-Bonding Agents; D005054:Eugenol