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Antimicrobial and bond strength properties of a dental adhesive containing zinc oxide nanoparticles
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Zinc oxide. Nanoparticles. Dental cements. Anti-Infective agents. Dental caries.

How to Cite

Saffarpour M, Rahmani M, Tahriri M, Peymani A. Antimicrobial and bond strength properties of a dental adhesive containing zinc oxide nanoparticles. Braz. J. Oral Sci. [Internet]. 2016 Oct. 13 [cited 2023 Jun. 7];15(1):66-9. Available from:


Aim: To assess the effect of adding zinc oxide nanoparticles to dental adhesives on their anti-microbial and bond strength properties. Methods: 45 human premolars were cut at the cement enamel junction (CEJ) and the crowns were sliced into buccal and lingual halves. The specimens were classified into three groups, etched with 37% phosphoric acid for 15 s and rinsed for 30 s. Single Bond, Single Bond+5% zinc oxide and Single Bond+10% zinc oxide were used in the first, second and third groups. A cylinder of Z250 composite was bonded and cured for 40 s. For anti-bacterial testing, 10 samples of each group were assessed by direct contact test; 10 μL of bacterial suspension was transferred into tubes containing adhesives and incubated for one hour; 300 μL of brain heart infusion (BHI) broth was added to each tube and after 12 h, 50 μL of bacteria and broth were spread on blood agar plates and incubated for 24 h. Results: The colony count decreased significantly in the second and third groups compared to the first. Conclusions: Incorporation of zinc oxide nanoparticles into dental adhesives increases their anti-microbial properties without affecting their bond strength.
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