Titanium dioxide nanotubes addition to self-adhesive resin cement: Effect on physical and biological properties

Dental Materials : Official Publication of the Academy of Dental Materials
Carla M Ramos-TonelloAna Flávia S Borges

Abstract

This study has investigated the influence of Titanium dioxide nanotubes (TiO2-nt) addition to self-adhesive resin cement on the degree of conversion, water sorption, and water solubility, mechanical and biological properties. A commercially available auto-adhesive resin cement (RelyX U200™, 3M ESPE) was reinforced with varying amounts of nanotubes (0.3, 0.6, 0.9wt%) and evaluated at different curing modes (self- and dual cure). The DC in different times (3, 6, 9, 12 and 15min), water sorption (Ws) and solubility (Sl), 3-point flexural strength (σf), elastic modulus (E), Knoop microhardness (H) and viability of NIH/3T3 fibroblasts were performed to characterize the resin cement. Reinforced self-adhesive resin cement, regardless of concentration, increased the DC for the self- and dual-curing modes at all times studied. The concentration of the TiO2-nt and the curing mode did not influence the Ws and Sl. Regarding σf, concentrations of both 0.3 and 0.9wt% for self-curing mode resulted in data similar to that of dual-curing unreinforced cement. The E increased with the addition of 0.9wt% for self-cure mode and H increased with 0.6 and 0.9wt% for both curing modes. Cytotoxicity assays revealed that reinforced cements were biocompat...Continue Reading

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Citations

Feb 16, 2020·Journal of Prosthodontic Research·Ana Paula Rodrigues MagalhãesAna Flávia Sanches Borges
Aug 13, 2020·Scientific Reports·Fernando Luis Esteban FlorezSharukh S Khajotia
Nov 28, 2020·Dental Materials : Official Publication of the Academy of Dental Materials·Michele StürmerFabrício M Collares
Jul 2, 2021·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Marcia Sirlene Zardin GraeffRodrigo Cardoso de Oliveira

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