Influence of Relining Post on the Bond Strength of Resin Cements.
This study evaluated the influence of relining fiber posts on the bond strength (BS) of resin cements in the root canal. Forty bovine teeth were divided in four groups (n = 10): G1 (ARC)-fiber post cemented with resin cement RelyX ARC; G2 (ARC+Z350)-relined fiber post cemented with RelyX ARC; G3 (U200)-fiber post cemented with self-adhesive cement RelyX U200; G4 (U200+Z350)-relined fiber post cemented with RelyX U200. The roots were sectioned in six 1.2-mm slices and the push-out test was performed. Data were analyzed by three-way analysis of variance (ANOVA), and Tukey's test (a = 0.05). For the conventional resin cement, there was no significant difference between groups G1-ARC (15.5 ± 3.8) and G2-ARC+Z350 (16.1 ± 4.5). For the self-adhesive cement, the results revealed higher BS values for relined posts G4-U200 + Z350 (19.9 ± 7.9) as compared to non-relined posts G3-U200 (14.4 ± 4.5). For both cements, in groups of relined posts, the apical and the cervical thirds presented similar BS. Relining enhances the performance of the self-adhesive resin cement, and the interaction between relining and root third influences the BS to the conventional resin cement.
Department of Dentistry, Federal University of Maranhao Avenida dos Portugueses, Bacanga, Sao Luis, Maranhao Brazil.
Daniele Meira
DM
Conde
Department of Dentistry, Federal University of Maranhao Avenida dos Portugueses, Bacanga, Sao Luis, Maranhao Brazil.
Vandilson Pinheiro
VP
Rodrigues
Department of Dentistry, Federal University of Maranhao Avenida dos Portugueses, Bacanga, Sao Luis, Maranhao Brazil.
Soraia de Fátima
Sde F
Carvalho Souza
Department of Dentistry, Federal University of Maranhao Avenida dos Portugueses, Bacanga, Sao Luis, Maranhao Brazil.
José Roberto Oliveira
JR
Bauer
Department of Dentistry, CEUMA University, Sao Luis, MA Brazil.
Fausto da Silva
Fda S
Bramante
Department of Dentistry, CEUMA University, Sao Luis, MA Brazil.
Suellen Nogueira
SN
Linares Lima
Department of Dentistry, CEUMA University, Sao Luis, MA Brazil.
Etevaldo Matos Maia
EM
Filho
Department of Dentistry, CEUMA University, Sao Luis, MA Brazil.
Matheus Coelho
MC
Bandeca
Department of Dentistry, Federal University of Sergipe, Rua Claudio Batista, s/n, Sanatorio, Aracaju, Sergipe, Brazil.
Adriano Augusto Melo
AA
de Mendonça
Professor, Department of Dentistry, Federal University of Maranhao Avenida dos Portugueses, 1966, Bacanga, Sao Luis, Maranhao Brazil, CEP 65080-805, Phone: +55 98 3272-8577, e-mail: darlonmartins@yahoo.com.br.
Darlon Martins
DM
Lima
D000818:Animals; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D002417:Cattle; D002484:Cementation / Q000379:methods; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003764:Dental Materials / Q000737:chemistry; D003786:Dental Pulp Cavity / Q000648:ultrastructure; D003804:Dentin / Q000648:ultrastructure; D005898:Glass / Q000737:chemistry; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D011176:Post and Core Technique / Q000295:instrumentation*; D011897:Random Allocation; D019279:Resin Cements / Q000737:chemistry*; D018915:Root Canal Preparation / Q000379:methods; D013314:Stress, Mechanical; D013499:Surface Properties
D003188:Composite Resins; D003764:Dental Materials; D011109:Polymethacrylic Acids; C462240:RelyX ARC; C587242:RelyX U200; D019279:Resin Cements; C084018:Scotchbond Multi-Purpose; C009753:fiberglass; C533204:filtek Z350; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate
Dental posts; Root canal; Shear strength