Bond Strength Evaluation of Two Adhesive Systems in Fiberglass Posts Cementation
Pesqui. bras. odontopediatria clín. integr
;
17(1): e2918, 13/01/2017. tab, graf
Article
Dans Anglais
| LILACS, BBO
| ID: biblio-914287
ABSTRACT
Objective:
To compare the bond strength of three-step and self-etch adhesive systems with and without prior acid etching on bonding of fiberglass posts in root canals. Material andMethods:
Experiments were conducted on roots of five upper molars without curvature and sectioned in a cervical-apical direction. With the aid of a highspeed turbine and diamond tips, cylindrical cavities 7 mm in depth and 1.4 mm in diameter were made in the dentine. The roots of the same tooth were used, where the retainers were cemented, thus generating three groups Group A Adper Scotchbond Multipurpose Plus (SBMP) + Rely X ARC; Group B Single Bond Universal (SBU-1) + Rely X ARC, with acid etching prior to adhesive insertion; Group C Single Bond Universal (SBU-2) + Rely X ARC. The samples were stored in a bacteriological incubator at 37ºC with 100% humidity for 48h and were subsequently cross-sectioned to obtain 3 dentine discs 1mm in thickness. Forty-five specimens were subjected to the push-out test.Results:
Through the analysis of variance and Tukey's test, it was found that SBMP showed, with statistical significance (p<0.05), highest bond strength when compared with the SBU-1 and SBU-2 systems. The observed difference in the discs was located in the cervical portion.Conclusion:
The three-step adhesive system had higher bond strength with the substrate than the self-etching adhesive only in the disc in the cervical portion; further, statistically, the prior application of phosphoric acid in SBU-1 did not affect its bond strength significantly.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Résistance à la traction
/
Mordançage à l'acide
/
Ciments dentaires
/
Ciment ionomère au verre
Pays comme sujet:
Amérique du Sud
/
Brésil
langue:
Anglais
Texte intégral:
Pesqui. bras. odontopediatria clín. integr
Thème du journal:
Dentisterie
Année:
2017
Type:
Article
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