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Effect of blood contamination during adhesive restorative procedures on dentin-resin cement shear bond strength


Blood contamination. Adhesive system. Dentin bonding. Indirect restoration. Shear bond strength

How to Cite

Soares CJ, Branco CA, Soares PBF, Fonseca RB, Carlo HL, Fernandes Neto AJ. Effect of blood contamination during adhesive restorative procedures on dentin-resin cement shear bond strength. Braz. J. Oral Sci. [Internet]. 2016 Jan. 21 [cited 2023 Mar. 29];6(21):1320-5. Available from:


The aim of this study was to evaluate the effect of dentin blood contamination during different steps of the restorative procedure on resin cement shear bond strength to dentin. Crows of 120 bovine incisors were prepared to obtain flat superficial dentin surfaces. Dentin was etched with phosphoric acid and contaminated with fresh blood for 10 seconds, before or after adhesive system application. Different treatments were tested in contaminated dentin, resulting on eight groups (N=15). Composite resin restorations (TPH Spectrum, Dentsply) were adhesively fixed (Excite, Ivoclar-Vivadent) with resin cement (Variolink 2, Ivoclar-Vivadent) and shear bond strength test (0.5 mm/min) was performed. Morphologic observations were carried out with scanning electron microscopy (SEM). Data (MPa) were submitted to one-way ANOVA following Tukey’s test (p<0.05), showing that blood contamination during adhesive procedure negatively affects bond strength, and decontamination methods do not recover original bond strength. The negative effects of blood contamination on shear bond strength to dentin and resin cement were significant in all contaminated groups; none of the tested dentin treatment procedures resulted in higher bond strength irrespective of the moment on which blood contamination took place.


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