title: Adhesion of a glass-ionomer root canal sealer to human dentine.
abstract: This in vitro study evaluated the effect of smear layer removal on adhesion to human dentine of Ketac-Endo, Grossman, and Sealer 26 root canal sealers. A total of 60 extracted human maxillary and mandibular molars with their crowns ground flat were used. The teeth were divided into two groups: Group 1, the dentine surface received no treatment; Group 2, EDTA-C was applied to the dentine surface for 5 min. Ten samples were tested for each sealer and each group. Adhesion was measured with a Universal Testing Machine. Sealer 26 showed greater adhesion both with and without smear layer (p < 0.01). Ketac-Endo and Grossman sealers were statistically equal, having the lowest values of adhesion. Application of EDTA-C did not alter the adhesion of Ketac-Endo and Grossman sealers. However, the use of EDTA-C increased the adhesion of Sealer 26. The epoxy resin-based root canal sealer (Sealer 26) adhered better to dentine prepared with and without EDTA-C than glass-ionomer-based sealers and the zinc oxide eugenol-based (Ketac-Endo and Grossman) sealers.
authors.affiliation: Faculty of Dentistry, University of Ribeirão Preto, Ribeirão Preto, Brazil.
authors.forename: A L
authors.initials: AL
authors.lastname: Najar
authors.forename: P C
authors.initials: PC
authors.lastname: Saquy
authors.forename: L P
authors.initials: LP
authors.lastname: Vansan
authors.forename: M D
authors.initials: MD
authors.lastname: Sousa-Neto
mesh_terms: D000268:Adhesiveness; D001729:Bismuth / Q000737:chemistry; D002126:Calcium Hydroxide / Q000737:chemistry; D002614:Chelating Agents / Q000737:chemistry; D001840:Dental Bonding; D003799:Dental Stress Analysis / Q000295:instrumentation; D003804:Dentin / Q000648:ultrastructure*; D004492:Edetic Acid / Q000031:analogs & derivatives* / Q000737:chemistry; D004853:Epoxy Resins / Q000737:chemistry; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D012387:Root Canal Filling Materials / Q000737:chemistry*; D016369:Smear Layer; D013314:Stress, Mechanical; D015035:Zinc Oxide-Eugenol Cement / Q000737:chemistry
chemical_list: D002614:Chelating Agents; D004853:Epoxy Resins; D005899:Glass Ionomer Cements; C074934:Ketac Endo; D012387:Root Canal Filling Materials; C080620:Sealer 26; D015035:Zinc Oxide-Eugenol Cement; C045432:Grossman's sealer; C033443:EDTAC; D004492:Edetic Acid; D002126:Calcium Hydroxide; D001729:Bismuth