TiO2 nanotubes improve physico-mechanical properties of glass ionomer cement

Kantovitz, Kamila Rosamilia; Fernandes, Fernando Pelegrim; Feitosa, Isabella Vidal; Lazzarini, Marcela Oliveira; Denucci, Giovanna Corrêa; Gomes, Orisson Ponce; Giovani, Priscila Alves; Moreira, Kelly Maria Silva; Pecorari, Vanessa Gallego Arias; Borges, Ana Flávia Sanches; Nociti, Francisco Humberto; Basting, Roberta Tarkany; Lisboa‐Filho, Paulo Noronha; Puppin‐Rontani, Regina Maria

doi:10.1016/j.dental.2020.01.018

Cited by 25 publications

(30 citation statements)

References 31 publications

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“…Garcia-Contreras et al [ 89 ] reported that low concentrations (3% and 5%) of TiO 2 nanotubes did not interfere with the adhesion of glass ionomer cement to dental tissues. And 5% improved its compressive strength [ 90 ].…”

Section: Strategies For Interrupting Biofilm Formationmentioning

confidence: 99%

Bacterial adhesion to biomaterials: What regulates this attachment? A review

Kreve

Reis

2021

Japanese Dental Science Review

128

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Highlights Bacterial adhesion to the surface of dental materials play a significant role in infections. The factors that govern microbial attachment involves different types of physical-chemical interactions and biological processes. Studying bacterial adhesion makes it possible to understand the mechanisms involved in attachment and helps in the search for technologies that promote antibacterial surfaces.

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Section: Strategies For Interrupting Biofilm Formationmentioning

confidence: 99%

Bacterial adhesion to biomaterials: What regulates this attachment? A review

Kreve

Reis

2021

Japanese Dental Science Review

128

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“…GIC samples were assigned to four experimental groups according to the concentration of n-TiO 2 : GIC = Control; GIC+3% n-TiO 2 ; GIC+5% n-TiO 2 ; and GIC+7% n-TiO 2 following the previous studies of our group. 14,15 S. mutans strains were cultured on GIC disks and the following parameters were assessed: inhibition halo (mm) (n=3/group); cell viability -live/dead (n = 5/group); cell morphology (SEM) (n = 3/group); and gene expression (real-time PCR) (n = 6/group). Experiments were done in triplicate and repeated at least twice, according to ISO 10993-5 (2009) recommendations.…”

Section: Methodology Experimental Designmentioning

confidence: 99%

“…4 GIC sample preparation n-TiO 2 was weighed in a precision scale with 0.0001 g readability (Adventurer Ohaus, Parsippany, New Jersey, USA), added to the GIC's component powder and homogenized vigorously in a QL-901 vortex mixer (Biomixer, Taft, USA) for 2 min. 14,15 The recommended powder/liquid (P/L) ratio of 1/1 for GIC was used for all prepared samples and manipulation was done following the manufacturer's specifications. GIC and GIC-n-TiO 2 disks were prepared using Teflon bipartite disk molds in one increment and pressed for 6 min between the polyester matrix (Proben, Catanduva, Brazil, #PR5021) and glass plates.…”

Section: Methodology Experimental Designmentioning

confidence: 99%

“…9,10 In order to improve the anticariogenic activity and mechanical properties of GICs, some studies have focused on the addition of bioactive particles to ionomer materials. 11,12,13 Among several materials, titanium dioxide (TiO 2 ) has been incorporated into GIC 14,15,16,17 due to its high biocompatibility and mechanical properties and also because of its potential antimicrobial activity. Recent studies have shown that GIC reinforced with nanostructured TiO 2 exhibited improved mechanical properties, 15 increased fluoride release, 14 and a higher antimicrobial potential compared with conventional GIC.…”

Section: Introductionmentioning

confidence: 99%

“…11,12,13 Among several materials, titanium dioxide (TiO 2 ) has been incorporated into GIC 14,15,16,17 due to its high biocompatibility and mechanical properties and also because of its potential antimicrobial activity. Recent studies have shown that GIC reinforced with nanostructured TiO 2 exhibited improved mechanical properties, 15 increased fluoride release, 14 and a higher antimicrobial potential compared with conventional GIC. 16,17 However, the mechanisms associated with the antimicrobial effects of TiO 2 nanotechnologies remain unclear.…”

Section: Introductionmentioning

confidence: 99%

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Titanium dioxide nanotubes added to glass ionomer cements affect S. mutans viability and mechanisms of virulence

et al. 2021

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Titanium dioxide nanotubes added to glass ionomer cements affect S. mutans viability and mechanisms of virulenceAbstract: This in vitro study evaluated the impact of TiO 2 nanotubes (n-TiO 2 ) incorporated into glass ionomer cement (GIC) on Streptococcus mutans (S. mutans) characteristics at cellular and molecular levels. n-TiO 2 , synthesized by the alkaline method (20 nm in size), was added to Ketac Molar EasyMix ® at 0%, 3%, 5%, and 7% by weight. S. mutans strains were cultured on GIC disks with addition or not of n-TiO 2 for 1, 3, and 7 days and the following parameters were assessed: inhibition halo (mm) (n=3/group); cell viability (live/dead) (n=5/group); cell morphology (SEM) (n=3/group); and gene expression by real-time PCR (vicR, covR, gtfB, gtfC, and gtfD) (n=6/group). The data were analyzed by the Kruskal-Wallis test, repeated-measures ANOVA or two-way ANOVA, and Tukey's and Dunn's post-hoc tests (α=0.05). The agar diffusion test showed a higher antibacterial property for 5% n-TiO 2 compared with 3% and 7% (p<0.05) with no effect of time (1, 3, and 7 days). The cell number was significantly affected by all n-TiO 2 groups, while viability was mostly affected by 3% and 5% n-TiO 2 , which also affected cell morphology and organization. Real-time PCR demonstrated that n-TiO 2 reduced the expression of covR when compared with GIC with no n-TiO 2 (p<0.05), with no effect of time, except for 3% n-TiO 2 on vicR expression. Within-group and between-group analyses revealed n-TiO 2 did not affect mRNA levels of gtfB, gtfC, and gtfD (p>0.05). Incorporation of n-TiO 2 at 3% and 5% potentially affected S. mutans viability and the expression of key genes for bacterial survival and growth, improving the anticariogenic properties of GIC.

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Improving the Mechanical Properties of Glass Ionomer Cement With Nanocrystalline Cellulose From Rice Husk

Rini,

Juwita,

Bagjana

et al. 2024

J Biomed Mater Res

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This study aimed to evaluate the effect of incorporating nanocrystalline cellulose (NCC) sourced from rice husk on the mechanical properties of a commercial glass ionomer cement (GIC). NCC was isolated through acid hydrolysis, and its crystallinity, chemical structure, and morphology were characterized through x‐ray diffractometry, Fourier‐transform infrared spectroscopy, and transmission electron microscopy, respectively. Various concentrations of NCC (0%, 0.5%, 1%, and 1.5%) were added to reinforce the GIC matrix. Mechanical tests including compressive strength, flexural strength, hardness, and shear bond strength were conducted on the modified GIC samples. The addition of NCC resulted in increased hardness and shear bond strength values, with 1% NCC showing the highest values compared to other concentrations. However, there was no significant improvement observed in the compressive and flexural strength of the modified GIC. Failure mode test revealed a reduction in adhesive failure with the addition of NCC. Incorporating small amounts of NCC (0.5%–1%) suggests a promising and affordable modification of GIC restorative material using biomass residue, resulting in improved mechanical properties.

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TiO2 nanotubes improve physico-mechanical properties of glass ionomer cement

Cited by 25 publications

References 31 publications

Bacterial adhesion to biomaterials: What regulates this attachment? A review

Bacterial adhesion to biomaterials: What regulates this attachment? A review

Titanium dioxide nanotubes added to glass ionomer cements affect S. mutans viability and mechanisms of virulence

Improving the Mechanical Properties of Glass Ionomer Cement With Nanocrystalline Cellulose From Rice Husk

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