Characteristics of experimental resin-modified glass-ionomer cements, containing alternate monomers to HEMA

Agha, Amani; Parker, Sandra; Parkinson, Eric Kenneth; Patel, Mukesh R.

doi:10.1016/j.dental.2021.08.003

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…However, the excessive solubility of the cement may irreversibly modify its structure and, potentially, reduce the adhesion of the tooth to the prosthesis, increasing marginal permeability. The lower solubility of resin-modified GICs compared to conventional GICs has been analysed in the literature due to the formation of single, double, and cross bonds between the polymers and the resin matrix [33]. The addition of nanoparticles (silicon, aluminium) has been shown to contribute to a lower solubility of the cement.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the Antibacterial Activity Against Streptococcus mutans and Solubility of Different Dental Luting Cements In Vitro

AUČINAITĖ¹,

TRUMPAITĖ-VANAGIENĖ²,

VERSOCKIENĖ³

et al. 2023

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The aim of this in vitro study was to evaluate the antibacterial and solubility properties of four luting cements in artificial saliva at varying pH and clarify the composition by chemical analysis. Samples of bioceramic (C1), two resin-modified glass ionomer (C2 and C3), and zinc phosphate (C4) cements were stored on media with Streptococcus mutans and artificial saliva (pH 4.6 and pH 6.5). The disc diffusion method was used to evaluate antibacterial activity. In the solubility test, cement discs were stored in artificial saliva (pH 4.6 and pH 6.5) and distilled water (pH 7). After 48 and 120 hours, the solubility of the cement specimens was determined. Chemical analysis was performed by X-ray fluorescence. The growth inhibition zones of S. mutans induced by C4 were the largest in any pH values tested (p < 0.05). The solubility of C4 was significantly higher than the solubility of other cements. C2 had the smallest inhibition zones and was least soluble in all media during the observation period, but without significant differences. After 48 hours, the solubility of C4 was significantly higher at pH 4.6 compared to control. The solubility of the cements, excluding C2, was significantly higher after 120 hours at pH 6.5. A significant association was found between larger amount of zinc oxide in cement composition and a larger zone of inhibition. Lower solubility was associated with higher amounts of aluminium and silicon oxides in the cement. Thus, cement containing higher amounts of zinc oxides had the highest antibacterial activity. In the solubility test, cements were more soluble in acidic media than in neutral media, and lower solubility was detected in cements containing more aluminium and silicon oxides. In clinical practice, C1 or C3 may be suggested when there is a higher risk of caries due to more desirable combination of antibacterial activity and lower solubility, for a lower caries risk C2 might be suggested.

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Section: Discussionmentioning

confidence: 99%

Evaluation of the Antibacterial Activity Against Streptococcus mutans and Solubility of Different Dental Luting Cements In Vitro

AUČINAITĖ¹,

TRUMPAITĖ-VANAGIENĖ²,

VERSOCKIENĖ³

et al. 2023

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“…Increasing the concentration of hydrophilic MCPM may result in cytotoxic effects due to the increase in water plasticization or the degradation of the polymer network. This may increase the risk of releasing toxic monomers 64) . The composition of the extracts should be confirmed using HPLC in future studies.…”

Section: Discussionmentioning

confidence: 99%

Assessment of physical/mechanical properties and cytotoxicity of dual-cured resin cements containing Sr-bioactive glass nanoparticles and calcium phosphate

THANYASIRI,

NARUPHONTJIRAKUL,

PADUNGLAPPISIT

et al. 2023

Dent. Mater. J.

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The aim was to develop dual-cured resin cements containing Sr-bioactive glass nanoparticles (Sr-BGNPs; 5 or 10 wt%) and monocalcium phosphate monohydrate (MCPM; 3 or 6 wt%). Effects of additives on degree of monomer conversion (DC), biaxial flexural strength/ modulus, shear bond strength (SBS), mass/volume change, color stability, ion release, and cytotoxicity were examined. Controls included material without reactive fillers and Panavia SA Plus (PV). Experimental cements showed higher DC than PV regardless of light activation (p<0.05). Mean SBS and color stability were comparable between experimental cements and PV. Cell viability upon the exposure to sample extracts of experimental cements was 80%-92%. High additive concentrations led to lower strength and modulus than PV (p<0.05). The additives increased mass change, reduced color stability, and promoted ion release. The experimental resin cements demonstrated acceptable mechanical/chemical properties and cytotoxicity. The additives reduced the strength but provided ion release, a desirable action to prevent recurrent caries.

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The In-Vitro Effect of Silver and Zinc Oxide Nanoparticles on Fluoride Release and Microhardness of a Resin-Modified Glass Ionomer Cement

AlMatar

AlSanousi

Ahmed

et al. 2023

J Inorg Organomet Polym

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Reinforcement of nanoparticles into existing restorative biomaterials in dentistry is an area of interest. The aim of the current investigation was to incorporate silver nanoparticles (SNP) and zinc oxide nanoparticles (ZnONP) into a commercially available resin-modified glass ionomer cement (RMGIC). Their effects on the fluoride (F-) release from RMGIC were also investigated over a period of 14-days. Nanoparticles were incorporated at a loading concentration of 5 wt%, either individually or in a combination of both. Scanning electron microscopy (SEM), Fourier Transform infrared spectroscopy (FTIR), Nanocomputerized tomography (NanoCT), and the Vickers microhardness tester were used to examine the specimens. The fluoride release was analyzed by high performance liquid chromatography (HPLC). Data were analysed using ANOVA and Tukey’s test. RMGIC containing 5% ZnONP and 5% SNP + 5% ZnONP showed significant alterations in the surface ultrastructure with pores being evident in the surface. Fluoride release in parts per million (ppm) was highest in the 5% SNP and 5% ZnO-NP incorporated RMGIC compared to the control group and 5% SNP-incorporated RMGIC. RMGIC, as well as change in color observed in the 5% SNP incorporated RMGIC.

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Characteristics of experimental resin-modified glass-ionomer cements, containing alternate monomers to HEMA

Cited by 4 publications

References 23 publications

Evaluation of the Antibacterial Activity Against Streptococcus mutans and Solubility of Different Dental Luting Cements In Vitro

Evaluation of the Antibacterial Activity Against Streptococcus mutans and Solubility of Different Dental Luting Cements In Vitro

Assessment of physical/mechanical properties and cytotoxicity of dual-cured resin cements containing Sr-bioactive glass nanoparticles and calcium phosphate

The In-Vitro Effect of Silver and Zinc Oxide Nanoparticles on Fluoride Release and Microhardness of a Resin-Modified Glass Ionomer Cement

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