title: Drying protocol influence on the bond strength and apical sealing of three different endodontic sealers.
abstract: The aim of this study was to evaluate the influence of drying protocols (DP) on the apical sealing (AS) and on the bond strength (BS) of teeth filled with different sealers. The root canals of one hundred and fifty-six roots of maxillary canines were prepared with Reciproc rotary files (R50). The teeth were randomly divided into four groups (n = 39), according to the DP: GI-paper points; GII-70% isopropyl alcohol + aspiration with NaviTip points; GIII-95% ethanol + paper points; GIV-EndoVac + paper points. Each group was divided into subgroups, according to the sealer used: AH Plus, Sealapex and MTA Fillapex, using a single-cone technique. Evaluation of AS and BS was performed with fluid filtration (FF) and push-out (PO) methods, respectively. The PO test consisted of sectioning the roots, and subjecting a single slice from each third to testing and analysis for failure type. The data was submitted to two-way and three-way variance analysis (ANOVA) and Tukey (α = 5%). The AS showed no drying protocol influence. The FF results revealed a statistically significant difference between MTA and Sealapex (p < 0.05) sealers. The BS test values showed that there was no statistical significant difference among the canal thirds (p > 0.05), but that there was such a difference among the sealers (p < 0.05), among the protocols (p < 0.05), and in the interaction between sealers and protocols (p < 0.05). AH Plus revealed the highest BS values among the sealers; the highest BS results for the sealers occurred with the specimens used with isopropyl alcohol, compared with ethanol and EndoVac.
authors.affiliation: Universidade Estadual de Montes Claros - Unimontes, School of Dentistry, Interinstitutional PhD Program, Montes Claros, MG, Brazil.
authors.forename: Adrianne Calixto Freire de
authors.initials: AC
authors.lastname: Paula
authors.affiliation: Universidade Estadual de Montes Claros - Unimontes, School of Dentistry, Interinstitutional PhD Program, Montes Claros, MG, Brazil.
authors.forename: Manoel
authors.initials: M
authors.lastname: Brito-Júnior
authors.affiliation: Universidade Estadual de Montes Claros - Unimontes, School of Dentistry, Interinstitutional PhD Program, Montes Claros, MG, Brazil.
authors.forename: Carla Cristina Camilo
authors.initials: CC
authors.lastname: Araújo
authors.affiliation: Universidade de São Paulo - USP, School of Dentistry, Department of Restorative Dentistry, Ribeirão Preto, SP, Brazil.
authors.forename: Manoel Damião
authors.initials: MD
authors.lastname: Sousa-Neto
authors.affiliation: Universidade de São Paulo - USP, School of Dentistry, Department of Restorative Dentistry, Ribeirão Preto, SP, Brazil.
authors.forename: Antonio Miranda da
authors.initials: AM
authors.lastname: Cruz-Filho
mesh_terms: D000268:Adhesiveness; D017607:Aluminum Compounds / Q000737:chemistry*; D000704:Analysis of Variance; D017610:Calcium Compounds / Q000737:chemistry*; D002126:Calcium Hydroxide / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods*; D003804:Dentin / Q000187:drug effects; D004338:Drug Combinations; D004853:Epoxy Resins / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D010087:Oxides / Q000737:chemistry*; D011897:Random Allocation; D015203:Reproducibility of Results; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012459:Salicylates / Q000737:chemistry*; D017640:Silicates / Q000737:chemistry*; D013997:Time Factors
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D004853:Epoxy Resins; D010087:Oxides; D012387:Root Canal Filling Materials; D012459:Salicylates; D017640:Silicates; C534916:epoxy resin-based root canal sealer; C086631:mineral trioxide aggregate; C055601:Sealapex; D002126:Calcium Hydroxide