Mechanical, antibacterial and bond strength properties of nano-titanium-enriched glass ionomer cement

Abstract

The use of nanoparticles (NPs) has become a significant area of research in Dentistry. Objective The aim of this study was to investigate the physical, antibacterial activity and bond strength properties of conventional base, core build and restorative of glass ionomer cement (GIC) compared to GIC supplemented with titanium dioxide (TiO2) nanopowder at 3% and 5% (w/w).Material and Methods Vickers microhardness was estimated with diamond indenter. Compressive and flexural strengths were analyzed in a universal testing machine. Specimens were bonded to enamel and dentine, and tested for shear bond strength in a universal testing machine. Specimens were incubated with S. mutans suspension for evaluating antibacterial activity. Surface analysis of restorative conventional and modified GIC was performed with SEM and EDS. The analyses were carried out with Kolmogorov-Smirnov, ANOVA (post-hoc), Tukey test, Kruskal-Wallis, and Mann Whitney.Results Conventional GIC and GIC modified with TiO2 nanopowder for the base/liner cement and core build showed no differences for mechanical, antibacterial, and shear bond properties (p>0.05). In contrast, the supplementation of TiO2 NPs to restorative GIC significantly improved Vickers microhardness (p<0.05), flexural and compressive strength (p<0.05), and antibacterial activity (p<0.001), without interfering with adhesion to enamel and dentin.Conclusion GIC supplemented with TiO2 NPs (FX-II) is a promising material for restoration because of its potential antibacterial activity and durable restoration to withstand the mastication force.

The influence of adding modified zirconium oxide-titanium dioxide nano-particles on mechanical properties of orthodontic adhesive: an in vitro study

“…This nanofillers beside their antibacterial effect they have been suggested as reinforcing fillers [36, 37]. …”

Novel Gd(OH)3, GdOOH and Gd2O3 Nanorods: Microwave-Assisted Hydrothermal Synthesis and Optical Properties

“…This method provides a simple and fast approach for the large-scale production of new emergent complex functional materials. In addition, it also enables the shape-controlled synthesis of micro-and/or nanomaterials at a lower cost, for their industrial exploitation with unprecedented capabilities in the new technologies [9][10][11][12][13][14] .…”

Microleakage of Different Self-adhering Materials

“…Glass ionomers also have low thermal expansion and observed values close to the normal tooth structure [19][20][21]. But some disadvantages like fragility, aesthetic deficiency and inferior mechanical properties [22,23] have led researchers to further develop this material. It has been reported that glass carbomer has significantly better mechanical and chemical properties.…”

“…Also, command setting with the application of heat with a special LED curing device is another advantage of the material [24]. Moshaverinia et al [23] reported that Nvinylpyrrolidone containing polyacids, nano-hydroxy and fluoroapatite were positively affected by conventional glass ionomer cements mechanical properties. Analogous to the glass carbomer cement, RMGICs were developed to overcome conventional glass ionomers inadequate features [4].…”