title: Influence of endodontic materials on the bonding of composite resin to dentin.
abstract: We assessed the bond strength of a composite resin to dentin that had been in contact with different materials. Flat dentin surfaces in freshly extracted human teeth were covered for 15 min or 48 h with a 1-mm layer of a variety of materials. The products were mechanically removed and a composite resin cylindrical specimen bonded to the dentin surface using the Prisma universal bond system. After 7 days immersion at 37 degrees C in water, the tensile bond strength was tested. The results were compared with those on dentin surfaces not in contact with any endodontic material. Statistical analysis showed that some materials (Grossmans Cement, IRM, Maisto's slowly resorbable paste) reduced the strength of the bond or even precluded bonding. It is necessary to develop techniques that will eliminate this when restoring endodontically treated teeth.
authors.affiliation: University of Buenos Aires, Argentina.
authors.forename: R L
authors.initials: RL
authors.lastname: Macchi
authors.forename: M A
authors.initials: MA
authors.lastname: Capurro
authors.forename: C L
authors.initials: CL
authors.lastname: Herrera
authors.forename: F R
authors.initials: FR
authors.lastname: Cebada
authors.forename: S
authors.initials: S
authors.lastname: Kohen
mesh_terms: D000268:Adhesiveness; D000704:Analysis of Variance; D002126:Calcium Hydroxide; D002133:Calcium Sulfate; D002164:Camphor / Q000009:adverse effects; D003188:Composite Resins; D001840:Dental Bonding; D003738:Dental Cements; D003793:Dental Restoration, Permanent; D003794:Dental Restoration, Temporary; D003804:Dentin / Q000187:drug effects*; D017220:Dentin-Bonding Agents / Q000009:adverse effects*; D004338:Drug Combinations; D006801:Humans; D006847:Hydrocarbons, Iodinated / Q000009:adverse effects; D008768:Methylmethacrylates / Q000009:adverse effects; D008903:Minerals; D011145:Polyvinyls; D019279:Resin Cements; D012387:Root Canal Filling Materials / Q000009:adverse effects*; D013718:Tensile Strength; D015034:Zinc Oxide; D015035:Zinc Oxide-Eugenol Cement / Q000009:adverse effects
chemical_list: D003188:Composite Resins; D003738:Dental Cements; D017220:Dentin-Bonding Agents; D004338:Drug Combinations; D006847:Hydrocarbons, Iodinated; D008768:Methylmethacrylates; D008903:Minerals; D011145:Polyvinyls; D019279:Resin Cements; D012387:Root Canal Filling Materials; D015035:Zinc Oxide-Eugenol Cement; C045432:Grossman's sealer; C062652:Prisma Universal Bond; C036374:Kri paste; C025702:Dycal; C031667:IRM cement; C020872:Cavit; D002164:Camphor; C061083:Lumicon; D002126:Calcium Hydroxide; D015034:Zinc Oxide; D002133:Calcium Sulfate