Does MTA affect fiber post retention in repaired cervical root canal perforations?
This study evaluated the effect of mineral trioxide aggregate (MTA) on the retention of fiber posts in repaired root canal perforations. Ten-millimeter post spaces were prepared in 60 endodontically treated bovine incisors. Root perforations were created in half of the root canals in the cervical area prior to being filled with white MTA-Angelus. Fiber posts were luted into the root canals with two self-adhesive (RelyX Unicem or Set) or self-etching (Panavia F) resin cements. The posts were submitted to a pull-out test, and the data were submitted to two-way ANOVA and Tukey's post hoc tests (α = 0.05). The fiber posts exhibited reduced retention in MTA-repaired root canal perforations, regardless of the type of resin cement that was used (p < 0.001). Self-adhesive resin cements provided higher bond strength values than Panavia F, while no difference was observed between RelyX Unicem and Set (p > 0.05). The presence of MTA in repaired root perforations negatively affected post retention. In addition, self-adhesive cements seemed to be the best option to lute fiber posts within a root canal in these cases.
Universidade de São Paulo, Universidade de São Paulo, Dental School of Ribeirão Preto, Department of Restorative Dentistry, Ribeirão Preto SP , Brazil, Universidade de São Paulo - USP, Dental School of Ribeirão Preto, Department of Restorative Dentistry, Ribeirão Preto, SP, Brazil.
Rodrigo Dantas
RD
Pereira
Universidade Estadual de Montes Claros, Universidade Estadual de Montes Claros, Department of Dentistry, Montes Claros MG , Brazil, Universidade Estadual de Montes Claros, Department of Dentistry, Montes Claros, MG, Brazil.
Manoel
M
Brito-Júnior
Universidade Federal de Sergipe, Universidade Federal de Sergipe, Department of Dentistry, Aracaju SE , Brazil, Universidade Federal de Sergipe, Department of Dentistry, Aracaju, SE, Brazil.
André Luis
AL
Faria-E-Silva
Faculdades Unidas do Norte de Minas, Faculdades Unidas do Norte de Minas, Departament of Dentistry, Montes Claros MG , Brazil, Faculdades Unidas do Norte de Minas, Departament of Dentistry, Montes Claros, MG, Brazil.
Karine Rodrigues
KR
Guimarães
Faculdades Unidas do Norte de Minas, Faculdades Unidas do Norte de Minas, Departament of Dentistry, Montes Claros MG , Brazil, Faculdades Unidas do Norte de Minas, Departament of Dentistry, Montes Claros, MG, Brazil.
Laís de Oliveira
Lde O
Mendes
Universidade Federal de Uberlândia, Universidade Federal de Uberlância, Department of Dental Materials and Restorative Dentistry, Uberlândia MG , Brazil, Universidade Federal de Uberlância - UFU, Department of Dental Materials and Restorative Dentistry, Uberlândia, MG, Brazil.
Carlos José
CJ
Soares
Universidade de São Paulo, Universidade de São Paulo, Dental School of Ribeirão Preto, Department of Restorative Dentistry, Ribeirão Preto SP , Brazil, Universidade de São Paulo - USP, Dental School of Ribeirão Preto, Department of Restorative Dentistry, Ribeirão Preto, SP, Brazil.
Manoel Damião
MD
Sousa-Neto
D017607:Aluminum Compounds / Q000737:chemistry*; D000818:Animals; D017610:Calcium Compounds / Q000737:chemistry*; D002417:Cattle; D002484:Cementation / Q000379:methods; D017268:Dental Prosthesis Retention; D003786:Dental Pulp Cavity / Q000187:drug effects*; D003804:Dentin / Q000187:drug effects; D004338:Drug Combinations; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D010087:Oxides / Q000737:chemistry*; D011176:Post and Core Technique; D015203:Reproducibility of Results; D019279:Resin Cements / Q000737:chemistry; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012389:Root Canal Obturation / Q000379:methods*; D017640:Silicates / Q000737:chemistry*; D013499:Surface Properties
D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D010087:Oxides; C438843:Panavia-Fluoro; C528569:Rely-X; D019279:Resin Cements; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate