Bond strength of different endodontic sealers to dentin: push-out test
J. appl. oral sci
; 19(6): 644-647, Nov.-Dec. 2011. tab
Article
em En
| LILACS
| ID: lil-610881
Biblioteca responsável:
BR1.1
ABSTRACT
OBJECTIVE:
The aim of this in vitro study was to evaluate the bond strength of different root canal sealers to dentin. MATERIAL ANDMETHODS:
Forty extracted single-rooted human teeth were examined and the coronal and middle thirds of the canals were prepared with a 1.50 mm post drill (FibreKor Post System, Pentron). The teeth were allocated in two experimental groups, irrigated with 2.5 percent NaOCl+17 percent EDTA or saline solution (control group) and instrumented using Race rotary files (FKG) to a size #40 at the working length. Then, the groups were divided into four subgroups and filled with Epiphany sealer (Group 1), EndoREZ (Group 2), AH26 (Group 3) and Grossman's Sealer (Group 4). After 2 weeks of storage in 100 percent humidity at 37ºC, all teeth were sectioned transversally into 2-mm-thick discs. Push-out tests were performed at a cross-head speed of 1 mm/min using a universal testing machine. The maximum load at failure was recorded and expressed in MPa.RESULTS:
Means (±SD) in root canals irrigated with 2.5 percent NaOCl and 17 percent EDTA were G1 (21.6±6.0), G2 (15.2±3.7), G3 (14.6±4.5) and G4 (11.7±4.1).Two-way ANOVA and Tukey's test showed the highest bond strength for the Epiphany's group (p< 0.01) when compared to the other tested sealers. Saline solution decreased the values of bond-strength (p<0.05) for all sealers.CONCLUSION:
Epiphany sealer presented higher bond strength values to dentin in both irrigating protocols, and the use of 2.5 percent NaOCl and 17 percent EDTA increased the bond strength values for all sealers.Palavras-chave
Texto completo:
1
Base de dados:
LILACS
Assunto principal:
Materiais Restauradores do Canal Radicular
/
Colagem Dentária
/
Dentina
Tipo de estudo:
Evaluation_studies
Limite:
Humans
Idioma:
En
Revista:
J. appl. oral sci
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Brasil
/
Estados Unidos