Synergistic effects of titanium dioxide and cellulose on the properties of glassionomer cement

Sun, Jing; Xu, Yimeng; Zhu, Bowu; Gao, Guanzhen; Ren, Jin; Wang, Honggang; Lin, Yi; Cao, Baocheng

doi:10.4012/dmj.2018-001

Cited by 19 publications

(14 citation statements)

References 53 publications

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“…Our findings demonstrated that GIC+3% n-TiO 2 and GIC+5% n-TiO 2 reduced S. mutans viability compared with the control group (GIC alone) and led to morphological alterations, including a rod-shaped structure rather than the typical spherical structure. These findings corroborate those of previous studies 12,20 that reported antibacterial effects for n-TiO 2 . While the mechanisms for a potential antibacterial effect of n-TiO 2 remain to be fully elucidated, it has been suggested that electrostatic interactions between metallic ions of nanostructured titanium and bacteria, 33 attachment to the cell membrane, 34 and the ensuing effects on phospholipids 35 may explain some of the events controlling bacterial viability in the presence of n-TiO 2 .…”

Section: Discussionsupporting

confidence: 93%

“…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%

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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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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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“…Therefore, it was concluded that the combination of CnC and titanium nano-particles modified GIC represents a promising restorative dental material for surface applications. 63…”

Section: Glass Ionomer Cement Powder Modifications and Filler Incorpomentioning

confidence: 99%

Modifications of Glass Ionomer Cement Powder by Addition of Recently Fabricated Nano-Fillers and Their Effect on the Properties: A Review

et al. 2019

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The aim of this article is to provide a brief insight regarding the recent studies and their recommendations related to the modifications to glass ionomer cement (GIC) powder in order to improve their properties. An electronic search of publications was made from the year 2000 to 2018. The databases included in the current study were EBSCOhost, PubMed, and ScienceDirect. The inclusion criteria for the current study include publication with abstract or full-text articles, original research, reviews or systematic reviews, in vitro, and in vivo studies that were written in English language. Among these only articles published in peer-reviewed journals were included. Articles published in other languages, with no available abstract and related to other nondentistry fields, were excluded. A detailed review of the recent materials used as a filler phase in GIC powder has revealed that not all modifications produce beneficial results. Recent work has demonstrated that modification of GIC powder with nano-particles has many beneficial effects on the properties of the material. This is due to the increase in surface area and surface energy, along with better particle distribution of the nano-particle. Therefore, more focus should be given on nano-particle having greater chemical affinity for GIC matrix as well as the tooth structure that will enhance the physicochemical properties of GIC.

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“…It was reported that the physical properties of the modified GIC reinforced with 2 wt% TiO 2 nanoparticles and 1 wt% of CNC showed significant improvement. 37 Given the desired mechanical strength of the BCNCincorporated RMGICs observed in this study, the RMGIC modified with 1 wt% BCNC might provide a practicable restorative material to be used under stress, which could help decrease tooth loss.…”

Section: Discussionmentioning

confidence: 84%

“…It was reported that the physical properties of the modified GIC reinforced with 2 wt% TiO 2 nanoparticles and 1 wt% of CNC showed significant improvement. 37 …”

Section: Discussionmentioning

confidence: 99%

Effects of Bacterial Cellulose Nanocrystals on the Mechanical Properties of Resin-Modified Glass Ionomer Cements

et al. 2020

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Objectives The purpose of this study was to evaluate the effect of bacterial cellulose nanocrystals (BCNCs) on the mechanical properties of resin-modified glass ionomer cements (RMGICs) including compressive strength (CS), diametral tensile strength (DTS), and modulus of elasticity (E). Materials and Methods BCNCs were incorporated into RMGIC at various concentrations (0.3, 0.5, and 1 wt%). Unmodified RMGIC was used as the control group. The specimens were stored in distilled water at 37°C for 24 hours. CS and DTS, as well as modulus of elasticity, were evaluated using a universal testing machine. The nanostructure of BCNCs was observed via field emission scanning electron microscopy. Statistical Analysis One-way analysis of variance and post-hoc Tukey tests were used for data analysis. Level of significance was at p < 0.05. Results The addition of BCNCs to RMGIC led to an increase in all of the tested mechanical properties compared with the control group, with a significant increase observed for 1 wt% BCNC. CS and DTS improved up to 23%, and modulus of elasticity increased by 44%. Conclusions The addition of BCNCs to the RMGIC improved the mechanical properties, including CS, elastic modulus, and DTS. Thus, the newly developed RMGICs with BCNCs might represent an ideal and promising novel dental material in restorative dentistry.

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Synergistic effects of titanium dioxide and cellulose on the properties of glassionomer cement

Cited by 19 publications

References 53 publications

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

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

Modifications of Glass Ionomer Cement Powder by Addition of Recently Fabricated Nano-Fillers and Their Effect on the Properties: A Review

Effects of Bacterial Cellulose Nanocrystals on the Mechanical Properties of Resin-Modified Glass Ionomer Cements

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