Produção Nacional
Tensile bond strength of four adhesive systems to dentin.
2001; National Institutes of Health; Volume: 14; Issue: 4 Linguagem: Inglês
Autores
Ana Maria Spohr, Ewerton Nocchi Conceição, João Felipe Mota Pacheco,
Tópico(s)Dental Radiography and Imaging
ResumoTo assess, in vitro, the tensile bond strength to dentin of the following adhesive systems: Single Bond (3M), One Coat Bond (Coltène), Clearfil Liner Bond 2 V (Kuraray) and Etch & Prime 3.0 (Degussa).Thirty third molars, extracted according to therapeutic indication, were used. The roots were removed at the cement-enamel junction level and the crowns were sectioned in a mesial-distal direction, obtaining buccal and lingual halves. The dental portions were included in self-cured acrylic resin, abraded on a lathe under water spray and polished to 400 and 600 grit. The adhesive systems were applied on dentin according to manufacturers' instructions and resin-based composite (Z100) cones were bonded. For each adhesive system, 15 specimens were prepared, stored in distilled water at 37 degrees C during 24 hrs and submitted to tensile bond strength tests on a universal testing machine (EMIC DL-2000) at a crosshead speed of 0.5 mm/min.The mean tensile bond strength to dentin (MPa +/- SD) were statistically different (ANOVA, Tukey's tests, P < or = 0.01, shown by asterisks) from each other: (1) Clearfil Liner Bond 2 V* = 24.8 +/- 3.3; (2) One Coat Bond** = 20.4 +/- 2.0; (3) Single Bond** = 18.1 +/- 2.4; (4) Etch & Prime 3.0*** = 5.8 +/- 2.4.
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