Bond Strength of Fiber Posts in Different Root Thirds Using Resin Cement


Autoria(s): FARINA, Ana Paula; CECCHIN, Douglas; GARCIA, Lucas da Fonseca Roberti; NAVES, Lucas Zago; CORRER SOBRINHO, Lourenco; PIRES-DE-SOUZA, Fernanda de Carvalho Panzeri
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

19/10/2012

19/10/2012

2011

Resumo

Purpose: The aim of the study was to assess the in vitro bond strength (BS) of glass fiber posts (GF) and carbon fiber posts (CF) in the cervical, middle, and apical thirds of root canals cemented with RelyX-Unicem (RX) and Cement-Post (CP). Materials and Methods: Forty maxillary canines were divided into 4 groups (n = 10) according to the cement and post used: group 1: GF and RX; group 2: CF and RX; group 3: GF and CP; group 4: CF and CP. The push-out test was applied in the cervical, middle and apical thirds of each specimen to assess bond strength of the cement/post complex to the root canal wall. The data obtained were submitted to ANOVA (Bonferroni test, p < 0.05), and fracture analysis was done with SEM. Results: The GF posts presented the best results when cemented with RX and with CF (p < 0.05). RX presented the highest BS values for both GF and CF (p < 0.05). For all the groups, BS was higher in the cervical third, followed by the middle and apical thirds. Fracture analysis showed a predominance of cohesive fracture of posts for RX, and a predominance of adhesive fracture between dentin/cement, and mixed failure mode for CP. Conclusion: GF posts cemented with RX presented the highest BS values in all root thirds.

Identificador

JOURNAL OF ADHESIVE DENTISTRY, v.13, n.2, p.179-186, 2011

1461-5185

http://producao.usp.br/handle/BDPI/26499

10.3290/j.jad.a18444

http://dx.doi.org/10.3290/j.jad.a18444

Idioma(s)

eng

Publicador

QUINTESSENCE PUBLISHING CO INC

Relação

Journal of Adhesive Dentistry

Direitos

restrictedAccess

Copyright QUINTESSENCE PUBLISHING CO INC

Palavras-Chave #fiber post #luting agent #push-out bond testing #root thirds #ENDODONTICALLY TREATED TEETH #CANAL DENTIN #MARGINAL ADAPTATION #FRACTURE-RESISTANCE #CURED COMPOSITES #ADHESIVE CEMENTS #SYSTEMS #ENAMEL #MICROTENSILE #REGIONS #Dentistry, Oral Surgery & Medicine
Tipo

article

original article

publishedVersion