title: Evaluation of Er:YAG laser and EDTAC on dentin adhesion of six endodontic sealers.
abstract: The effect of Er:YAG laser application and EDTAC on the adhesion of epoxy resin-based endodontic sealers to human dentin was evaluated in vitro. A total of 99 extracted human maxillary molars with their crowns worn flat were used. The teeth were divided into 3 groups: group 1, the dentin surface received no treatment; group 2, EDTAC was applied to the dentin surface for 5 min; group 3, the dentin surface received Er:YAG laser application (2.25 W potency; 11 mm focal distance; 4 Hz frequency; 200 mJ energy; 62 J total energy; 313 mean impulse). Three teeth from each group were analyzed by scanning electron microscopy for changes in dentin surface. The epoxy resin root canal sealers used were: AH Plus, Topseal, Sealer 26, AH 26, and Sealer Plus. The zinc oxide eugenol-based sealer Fillcanal was used as control. Adhesion was measured with a Universal testing machine. The results showed a statistically significant difference at the level of 1% among the dentin treatments. The dentin treated with Er:YAG laser showed greater adhesion with the sealers than dentin treated with EDTAC which was greater than dentin that received no treatment. The Tukey test showed the formation of 5 groups in decreasing order of adhesion: AH Plus, Topseal and Sealer 26, AH 26, Sealer Plus, and Fillcanal (Grossman cement).
authors.affiliation: Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil. pecora@forp.usp.br
authors.forename: J D
authors.initials: JD
authors.lastname: Pécora
authors.forename: A L
authors.initials: AL
authors.lastname: Cussioli
authors.forename: D M
authors.initials: DM
authors.lastname: Guerişoli
authors.forename: M A
authors.initials: MA
authors.lastname: Marchesan
authors.forename: M D
authors.initials: MD
authors.lastname: Sousa-Neto
authors.forename: A
authors.initials: A
authors.lastname: Brugnera Júnior
mesh_terms: D000269:Adhesives / Q000737:chemistry; D000538:Aluminum Silicates; D001729:Bismuth / Q000737:chemistry; D002126:Calcium Hydroxide / Q000737:chemistry; D002614:Chelating Agents / Q000627:therapeutic use*; D001840:Dental Bonding; D003804:Dentin / Q000187:drug effects / Q000528:radiation effects / Q000648:ultrastructure*; D004338:Drug Combinations; D004492:Edetic Acid / Q000031:analogs & derivatives* / Q000627:therapeutic use*; D004853:Epoxy Resins / Q000737:chemistry*; D004871:Erbium; D006801:Humans; D053685:Laser Therapy; D008709:Methenamine / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012834:Silver / Q000737:chemistry; D014025:Titanium / Q000737:chemistry; D015019:Yttrium; D015035:Zinc Oxide-Eugenol Cement / Q000737:chemistry
chemical_list: D000269:Adhesives; D000538:Aluminum Silicates; D002614:Chelating Agents; D004338:Drug Combinations; D004853:Epoxy Resins; D012387:Root Canal Filling Materials; C080620:Sealer 26; C115110:Topseal; D015035:Zinc Oxide-Eugenol Cement; C534916:epoxy resin-based root canal sealer; C045432:Grossman's sealer; D012834:Silver; C028044:epoxy resin AH-26; D015019:Yttrium; C033443:EDTAC; D004871:Erbium; D004492:Edetic Acid; D014025:Titanium; D008709:Methenamine; D002126:Calcium Hydroxide; D001729:Bismuth