[Retrograde root obturations employing composite and a dentin bonding agent: adaptions of the filling materials and bond strength].
Composite resin containing silver for radiopacity bonds to the dentin surface of a resected and slightly concave root pretreated with a dentin bonding agent (Gluma). The bond strength between composite and apical dentin is about 18 MPa and is not affected by a preceding root canal filling with eugenol-containing sealer. Contamination with saliva or serum of the Gluma-treated dentin surface reduced the bond strength significantly. No reduction in bond strength is observed when the contamination of the surface is performed before Gluma-application. Microscopy of the borderline between composite and dentin as well as SEM of the composite surface adjacent to dentin revealed a good adaptation which presumably does not allow bacterial penetration.
Munksgaard
E C
EC
Rud
J
J
Asmussen
E
E
D003188:Composite Resins; D001840:Dental Bonding / Q000379:methods*; D003799:Dental Stress Analysis; D003804:Dentin; D005976:Glutaral; D011109:Polymethacrylic Acids; D012184:Retrograde Obturation / Q000379:methods*
D003188:Composite Resins; D011109:Polymethacrylic Acids; C044372:Gluma; D005976:Glutaral
Retrograd rodfyldning med plast og dentinbinder: adaptering og bindingsstyrke.