In Vitro Comparison of Compressive and Tensile Strengths ofAcrylic Resins Reinforced by Silver Nanoparticles at 2% and0.2% Concentrations

Ghaffari, Tahereh; Hamedirad, Fahimeh; Ezzati, Baharak

doi:10.5681/joddd.2014.037

Cited by 26 publications

(12 citation statements)

References 25 publications

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“…A disadvantage of adding AgNPs to acrylic resin is that the NPs can darken the resin coloring, limiting its use in esthetic areas. However, small concentrations can be added to the palate region of dentures to improve the perception of flavor and patient satisfaction [25]. Such color alterations were also observed in this study.…”

Section: Discussionsupporting

confidence: 65%

Effect of silver-coated silica nanoparticles on the thermal conductivity of thermally activated acrylic resin

et al. 2022

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Objective: Thermally activated acrylic resins (RAATs) are widely used in dentures as a base material due to their good dimensional stability and biocompatibility. However, their low thermal conductivity is a disadvantage, as it affects acceptance when using dental prostheses. Thus, the objective of this work was to measure the conduction heat in RAATs with and without incorporation of silica and silver nanoparticles (NP) and rigid reline (RR). Material and Methods: For this, samples were made and divided into 10 groups (n = 6). The first five groups were 2-mm-thick samples: G1 (RAAT control), G2 (RAAT + RR control), G3 (RAAT and NP + RR), G4 (RAAT + RR and NP), and G5 (RAAT and RR modified by NP). In the other five groups, 8-mm-thick samples were made: G6 (RAAT control), G7 (RAAT + RR control), G8 (RAAT and NP + RR), G9 (RAAT + RR and NP), and G10 (RAAT and RR modified by NP). The heat that cross the surface of the specimens was quantified using a wireless device. The data were submitted to two-factor ANOVA statistical analysis and Tukey´s test with a 5% significance level. Results: After measuring the temperature variation as a function of time, it can be observed that there was a statistically significant difference for thermal conduction between the control groups and those modified with NP. Conclusion: Thus, it was possible to conclude that the NP improved the heat conduction in RAAT and in the RR because the nanoparticles have a higher thermal conductivity.

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Section: Discussionsupporting

confidence: 65%

Effect of silver-coated silica nanoparticles on the thermal conductivity of thermally activated acrylic resin

et al. 2022

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“…albicans , and Streptococcus mutans . [ 37 ] In a few of these studies, it has been mentioned that silver nanoparticles enhance the mechanical properties such as compressive strength[ 38 ] and thermal conductivity. [ 12 ] The effects of silver nanoparticles on the flexural strength of PMMA have not been extensively studied in comparison to the exploration of its antimicrobial advantage.…”

Section: Discussionmentioning

confidence: 99%

Comparison of titanium dioxide nanoparticles and silver nanoparticles for flexural strength once incorporated in heat-cure acrylic denture base resin: An in vitro Study

Pai¹,

Nayak²,

Hallikerimath³

et al. 2023

J Indian Prosthodont Soc

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Aim: Polymethylmethacrylate (PMMA) resin is the most by and large used denture base material. Denture fractures are sequential to the flexure or impacting forces. Different nanoparticles such as titanium dioxide and silver nanoparticles have been used to improve its antimicrobial properties. There are limited data on their effect on flexural strength. The aim of the study was to assess the effect of silver nanoparticles and titanium dioxide nanoparticles addition on flexural strength of PMMA resins. Settings and Design: One hundred and thirty specimens divided into four groups: Control Group A, TiO 2 -reinforced Group B, silver nanoparticles reinforced Group C, and mixture of TiO 2 and silver nanoparticle reinforced Group D. Each reinforced group further divided based on concentrations -0.5%, 1%, 2%, and 3%. Materials and Methods: Rectangular metal models of the American Dental Association (ADA)- specified dimensions: 65 mm × 10 mm × 3 mm were used to form a mold space for the fabrication of specimens. Three-point bend test was used to determine the flexural strength of the samples after immersion in distilled water for 2 weeks. Statistical Analysis: The data collected were subjected to analysis of variance followed by post hoc Tukey’s test. Results: The comparison of the mean flexural strengths showed a statistically significant gradual decrease on increasing the concentrations of nanoparticles. Maximal flexural strength was seen in the control group and least with 3% Ag + TiO 2 Nps. The modified specimen also showed color changes. Conclusions: In an in vitro environment, addition of TiO 2 and silver decreases the flexural strength of the PMMA. It also causes visible color changes.

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“…Pal., et al .,[ 8 ] in 2007, Casemiro., et al .,[ 9 ] in 2008, Chladek., et al[ 10 ], in 2012, Hamedi Rad et al[ 11 ] in 2014, Ghafari et al .,[ 12 ] in 2014, Köroğlu A et al .,[ 13 ] in 2016, Yin et al .,[ 14 ] 2020 investigated the antimicrobial properties in different shapes and concentrations of Ag nanoparticles and concluded significant decrease in microbial count and reduction in hardness, tensile bond strength of resins and liners.…”

Section: Discussionmentioning

confidence: 99%

Nanoparticles in prosthetic materials: A literature review

et al. 2021

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In Vitro Comparison of Compressive and Tensile Strengths ofAcrylic Resins Reinforced by Silver Nanoparticles at 2% and0.2% Concentrations

Cited by 26 publications

References 25 publications

Effect of silver-coated silica nanoparticles on the thermal conductivity of thermally activated acrylic resin

Effect of silver-coated silica nanoparticles on the thermal conductivity of thermally activated acrylic resin

Comparison of titanium dioxide nanoparticles and silver nanoparticles for flexural strength once incorporated in heat-cure acrylic denture base resin: An in vitro Study

Nanoparticles in prosthetic materials: A literature review

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