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Avances en Odontoestomatología

versión impresa ISSN 0213-1285

Resumen

ALBALADEJO, A.. In vitro investigation’s methods of the factors influencing resin-dentin bond durability. Av Odontoestomatol [online]. 2008, vol.24, n.4, pp.267-276. ISSN 0213-1285.

The durability of resin-dentin bonds between adhesive resins and coronal dentin is of critical importance and little is known regarding the stability of hybridized layers. Static bond strength tests may not adequately demonstrate the potential detrimental effects that porosities and other internal defects within the adhesive layer may have on bonding durability. After cyclic loading, the effect of these interfacial defects on long-term bonding may be more readily apparent. The combined use of mechanical loading with microtensile bond strength testing permits the evaluation of the in vitro durability of resin-dentin bonds under more clinically-relevant conditions than are usually employed in static bond strength testing techniques. The challenging method based upon 10% Sodium hypochlorite immersion of specimens during a short period of time is much more reliable than in vitro studies based on long-term water storage of specimens and those previously reported after Sodium hypochlorite immersion are similar to the decline in bond strength obtained when in vivo degradation studies are performed.

Palabras clave : Dentin; resin; degradation; bonding; cyclic loading; sodium hypochlorite.

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