Antibacterial activity of a glass ionomer containing silver nanoparticles against Streptococcus mutans and Streptococcus sanguinis

Moshfeghi, Hamidreza; Haghgoo, Roza; Sadeghi, Rokhsareh; Niakan, Mohammad; Rezvani, M.

doi:10.4103/ijdr.ijdr_115_18

Cited by 2 publications

(3 citation statements)

References 2 publications

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Section: Discussionmentioning

confidence: 99%

“…Ketac™ Silver was chosen over a conventional GIC as the most appropriate material for the purpose of this study thanks to its improved antibacterial activity against cariogenic biofilm, provided by the addition of silver [33,37,38] Silver ions exert effective antimicrobial activity through three major mechanisms: inhibition of cellular respiration and disruption of metabolic pathways by generating reactive oxygen species, disruption of DNA replication, and direct damage of the bacterial cell wall through reactions with peptidoglycan [39]. Additionally, the addition of silver particles to GICs does not negatively affect their mechanical and physical properties [40,41] As a side note, according to the manufacturer's instructions, the setting time for Ketac™ Silver is generally 5 min from the beginning of mixing at room temperature within 23 • C, while it is accelerated at higher room temperatures.…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of Antibacterial Activity of a Bioactive Restorative Material Versus a Glass-Ionomer Cement on Streptococcus Mutans: In-Vitro Study

Conti,

Veneri,

Amadori

et al. 2023

Dentistry Journal

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Background: Dental caries management consists of both preventive and restorative approaches. Pediatric dentists can rely on many techniques and materials to restore decayed teeth, but a high failure rate is still observed, mainly due to secondary caries. New restorative bioactive materials combine the mechanical and aesthetic characteristics of resinous materials with the capability to remineralize and the antimicrobial properties of glass ionomers, thus counteracting the occurrence of secondary caries. The aim of this study was to assess the antimicrobial activity against Streptococcus mutans of a bioactive restorative material (ACTIVA™ BioActive-Restorative™-Pulpdent©) and a glass ionomer cement with silver particles added (Ketac™ Silver—3M©), using agar diffusion assay. Methods: Each material was formed into disks of 4 mm in diameter, and four discs of each material were placed on nine agar plates. The analysis was repeated seven times. Results: Both materials showed statistically significant growth inhibition properties against S. mutans (p < 0.05). The difference in the effectiveness of the two materials was not statistically significant. Conclusion: Both ACTIVA™ and Ketac™ Silver can be recommended since both are similarly effective against S. mutans. However ACTIVA™, given its bioactivity and better aesthetics and mechanical properties compared to GICs, may provide better clinical performance.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Evaluation of Antibacterial Activity of a Bioactive Restorative Material Versus a Glass-Ionomer Cement on Streptococcus Mutans: In-Vitro Study

Conti,

Veneri,

Amadori

et al. 2023

Dentistry Journal

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“…Glass ionomer cements (GICs) are the bioactive restorative materials of choice in cases of high levels of caries activity ( 4 ). In addition to the chemical adhesion to the tooth structure, the ability to release and recharge fluoride are considered important properties for clinical use ( 5 , 6 ).…”

Section: Introductionmentioning

confidence: 99%

Correlation between fluoride release, surface hardness and diametral tensile strength of restorative glass ionomer cements

Pardi,

da Cunha,

Cunha

et al. 2024

J Clin Exp Dent

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Background The aim of this study was to determine if there is a correlation between fluoride release, surface hardness, and diametral tensile strength of restorative glass ionomer cements (GICs). Material and Methods Conventional (Riva Self Cure) and resin-modified (Riva Light Cure) GICs were used. Thirty-four samples (ø 6 x 3 mm) were prepared for each cement. The kinetics of fluoride release (n=4) was evaluated over 28 days using a fluoride-selective electrode (ISE 4010-C00). The analysis of surface hardness (n=10) was performed using a microhardness tester (Shimadzu HMV-2000, Japan) with a Knoop indenter and a load of 25 gf for 30 seconds. The diametral tensile strength test (n=10) was conducted on a universal testing machine at a speed of 0.75 mm/min. Fluoride release data were analyzed by two-way repeated measures ANOVA and Bonferroni post hoc test, while independent t-test was used for other analyses (α=0.05). Results Overall, the groups showed higher fluoride release until day 7 and a progressive decrease until day 28. On day 1 and day 21, Riva Self Cure showed a higher level of release than Riva Light Cure ( p =0.026). Riva Light Cure showed higher diametral tensile strength ( p <0.0001) and surface hardness ( p =0.034) than Riva Self Cure. A negative correlation was found, indicating that higher fluoride release is associated with lower surface hardness and diametral tensile strength. Conclusion Fluoride release and mechanical performance are related properties of GICs, and these properties exhibit different values depending on the type of material. Resin-modified GIC release less fluoride but exhibit better mechanical performance compared to conventional GIC. Key words: Diametral Tensile Strength, Fluoride, Glass Ionomer Cement, Surface Hardness.

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Antibacterial activity of a glass ionomer containing silver nanoparticles against Streptococcus mutans and Streptococcus sanguinis

Cited by 2 publications

References 2 publications

Evaluation of Antibacterial Activity of a Bioactive Restorative Material Versus a Glass-Ionomer Cement on Streptococcus Mutans: In-Vitro Study

Evaluation of Antibacterial Activity of a Bioactive Restorative Material Versus a Glass-Ionomer Cement on Streptococcus Mutans: In-Vitro Study

Correlation between fluoride release, surface hardness and diametral tensile strength of restorative glass ionomer cements

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