Bond strength evaluation of self-etch and total-etch adhesive systems on intact and ground human enamel
Braz. j. oral sci
;
6(23): 1462-1466, Oct.-Dec. 2007. tab
Artículo
en Inglés
| LILACS, BBO
| ID: lil-518094
ABSTRACT
The aim of this study was to evaluate the bond strength of adhesive systems to intact and ground enamel. Enamel blocks from buccal and lingual surfaces of third molars were used for bonding procedures. Intact or ground (600-grit SiC paper) enamel surfaces were bonded using two ôetch&rinseõ adhesives (Prime&Bond 2.1 and Single Bond), three self-etching primer systems (Optibond Solo Plus SE; Tyrian SPE/One-Step Plus and UniFil Bond) or two self-etching adhesives (One-Up Bond F and Xeno III). A 6-mm composite crown was built on the bonded surfaces and samples were stored for 24 hs at 37oC. Samples were sectioned into 0.9-mm-thick slabs, each slab trimmed to a cross-sectional area of 0.8 mm2 and specimens loaded to failure at a crosshead speed of 0.5 mm/min, using a universal testing machine. Microtensile bond strength data (n=6) were analyzed using Kruskal- Wallis and Dunn tests. Differences in bond strength between intact and ground surfaces were not significant for both ôetch&rinseõ adhesives, Tyrian SPE/One-Step Plus, UniFil Bond and Xeno III systems. The enamel surface preparation resulted in higher bond strength for Optibond Solo Plus SE and One-Up Bond F systems. Enamel preparation using 600-grit SiC paper is unlikely to affect resin-enamel bond strengths.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Resistencia a la Tracción
/
Recubrimientos Dentinarios
/
Esmalte Dental
/
Tercer Molar
Límite:
Adulto
/
Humanos
Idioma:
Inglés
Revista:
Braz. j. oral sci
Asunto de la revista:
Odontología
Año:
2007
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
State University of Amazonas/BR
/
State University of Campinas/BR
/
State University of Piracicaba/BR
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