Push-out bond strength of fiber posts to root dentin using glass ionomer and resin modified glass ionomer cements
J. appl. oral sci
;
22(5): 390-396, Sep-Oct/2014. tab, graf
Article
Dans Anglais
| LILACS, BBO
| ID: lil-729841
ABSTRACT
OBJECTIVE:
The purpose of this study was to assess the push-out bond strength of glass fiber posts to root dentin after cementation with glass ionomer (GICs) and resinmodified glass ionomer cements (RMGICs). MATERIAL ANDMETHODS:
Fifty human maxillary canines were transversally sectioned at 15 mm from the apex. Canals were prepared with a step back technique until the application of a #55 K-file and filled. Post spaces were prepared and specimens were divided into five groups according to the cement used for post cementation Luting & Lining Cement; Fuji II LC Improved; RelyX Luting; Ketac Cem; and Ionoseal. After cementation of the glass fiber posts, all roots were stored at 100% humidity until testing. For push-out test, 1-mm thick slices were produced. The push-out test was performed in a universal testing machine at a crosshead speed of 0.5 mm/minute and the values (MPa) were analyzed by Kolmogorov-Smirnov and Levene's tests and by two-way ANOVA and Tukey's post hoc test at a significance level of 5%.RESULTS:
Fiber posts cemented using Luting & Lining Cement, Fuji II LC Improved, and Ketac Cem presented the highest bond strength to root dentin, followed by RelyX Luting. Ionoseal presented the lowest bond strength values (P>0.05). The post level did not influence the bond strength of fiber posts to root dentin (P=0.148). The major cause of failure was cohesive at the cement for all GICs and RMGICs.CONCLUSIONS:
Except for Ionoseal, all cements provided satisfactory bond strength values. .
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Racine dentaire
/
Restauration coronoradiculaire
/
Céments résine
/
Dentine
/
Ciment ionomère au verre
Type d'étude:
Essai clinique contrôlé
/
Études d'évaluation
Limites du sujet:
Humains
langue:
Anglais
Texte intégral:
J. appl. oral sci
Thème du journal:
Dentisterie
Année:
2014
Type:
Article
Pays d'affiliation:
Brésil
Institution/Pays d'affiliation:
Dental School/BR
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