Effect of water storage on resin-dentin bond strengths formed by different bonding approaches.
Article
Dans Anglais
| IMSEAR
| ID: sea-139769
ABSTRACT
Objectives:
The purpose of this study was to evaluate the influence of water storage on resin-dentin bond strengths [µTBS] using different adhesive bonding approaches. Materials andMethods:
Flat superficial dentin surfaces of 24 extracted human third molars were exposed and polished to create a standardized smear layer. The teeth were randomly distributed into four different groups Three-step etch-and-rinse (Adper Scotchbond Multi-Purpose, 3M ESPE - SBMP), two-step etch-and-rinse (Adper Single Bond 2, 3 M ESPE - SB); two-step self-etch (AdheSE, Ivoclar/Vivadent - AD); and self-etch 1 step (Adper Prompt L-Pop, 3M ESPE - LP). Following the adhesive application (n = 6), resin composite was incrementally applied (Filtek™ Supreme XT - 3 M ESPE) in order to obtain bonded sticks, with a cross-sectioned area of 0.81 mm 2 . The bonded sticks were randomly divided and assigned to be tested after one day [OD] (n 30) or six months [6 M] of water storage [6 M] (n = 30).Results:
Two-way ANOVA and Tukey's test showed that none of the adhesives showed degradation after 6 M. SB achieved the highest µTBS both in the [OD] (49.13 MPa) and [6M] (40.27 MPa). Despite the highest values in both time evaluations, the µTBS of SB significantly reduced after 6M. LP showed the lowest µTBS in both periods of evaluation (18.35 and 18.34 MPa).Conclusions:
Although a significant degradation was only observed for SB, this was the adhesive that showed the highest µTBS after 6 M of water storage.
Texte intégral:
Disponible
Indice:
IMSEAR (Asie du Sud-Est)
langue:
Anglais
Année:
2009
Type:
Article
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