title: Root filling bond strength using reciprocating file-matched single-cones with different sealers.
abstract: The aim of the present study was to evaluate the bond strength (BS) of root canal fillings to root dentin using the reciprocating file-matched single-cone or lateral compaction techniques with resin-based and calcium-silicate-based sealers. Maxillary canine roots were prepared and filled using one of the following approaches: Reciproc R40 file and R40 single cone, WaveOne Large file and Large single cone, or ProTaper up to F4 file with lateral compaction. The root filling was performed using AH Plus, Epiphany SE or MTA Fillapex (n = 10). Three 1-mm-thick slices were obtained from each third of each root. Two slices were subjected to a push-out test, and the other slices were prepared for scanning electron microscopy (SEM) to examine the dentin-sealer interface. Data (in MPa) from the push-out tests were analyzed using a two-way ANOVA and Tukey's test (p < 0.05). Failure modes (adhesive, cohesive or mixed) were evaluated at ×25 magnification. The single-cone techniques resulted in lower BS values than the lateral compaction technique. For lateral compaction, AH Plus and Epiphany SE showed the highest and lowest BS values, respectively. Slight differences were observed between sealers when the single-cone techniques were used. A tendency to reduce the BS toward the apical third was observed. Adhesive failures were predominant for all experimental conditions. A closer adaption of the filling material on the root dentin was observed for the AH Plus and lateral compaction techniques. The Reciproc and WaveOne techniques were associated with lower BS values than the lateral compaction technique. However, the effect of the root canal filling technique appears to be sealer-dependent.
authors.affiliation: Universidade Estadual de Montes Claros - Unimontes, Department of Dentistry, State University of Montes Claros, Montes Claros, MG, Brazil.
authors.forename: Carla Cristina Camilo
authors.initials: CC
authors.lastname: Araújo
authors.affiliation: Universidade Estadual de Montes Claros - Unimontes, Department of Dentistry, State University of Montes Claros, Montes Claros, MG, Brazil.
authors.forename: Manoel
authors.initials: M
authors.lastname: Brito-Júnior
authors.affiliation: Universidade Federal de Sergipe - UFS, School of Dentistry, Department of Dentistry, Aracaju, SE, Brazil.
authors.forename: André Luís
authors.initials: AL
authors.lastname: Faria-E-Silva
authors.affiliation: Universidade de São Paulo - USP, School of Dentistry, Department of Restorative Dentistry, Ribeirão Preto, SP, Brazil.
authors.forename: Rodrigo Dantas
authors.initials: RD
authors.lastname: Pereira
authors.affiliation: Universidade de Ribeirão Preto - UNAERP, School of Dentistry, Department of Dentistry, Ribeirão Preto, SP, Brazil.
authors.forename: Yara Terezinha
authors.initials: YT
authors.lastname: Silva-Sousa
authors.affiliation: Universidade de São Paulo - USP, School of Dentistry, Department of Restorative Dentistry, Ribeirão Preto, SP, Brazil.
authors.forename: Antônio Miranda
authors.initials: AM
authors.lastname: Cruz-Filho
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
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry; D000704:Analysis of Variance; D017610:Calcium Compounds / Q000737:chemistry; D001840:Dental Bonding / Q000295:instrumentation* / Q000379:methods; D019232:Dental Restoration Failure; D003804:Dentin / Q000187:drug effects; D004338:Drug Combinations; D004853:Epoxy Resins / Q000737:chemistry; D004867:Equipment Design; D006801:Humans; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D009532:Nickel / Q000737:chemistry; D010087:Oxides / Q000737:chemistry; D015203:Reproducibility of Results; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012389:Root Canal Obturation / Q000295:instrumentation / Q000379:methods; D018915:Root Canal Preparation / Q000295:instrumentation* / Q000379:methods; D017640:Silicates / Q000737:chemistry; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D004853:Epoxy Resins; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C486893:epiphany sealer; C534916:epoxy resin-based root canal sealer; C086631:mineral trioxide aggregate; C040654:titanium nickelide; D009532:Nickel; D014025:Titanium