Graphene oxide and TiO<sub>2</sub> based PMMA nanocomposites for dental applications: A comprehensive study of the mechanical properties

Alamgir,; Tiwari, Santosh K.; Mallick, Ashish; Nayak, Ganesh Chandra

doi:10.1088/1757-899x/377/1/012082

Cited by 8 publications

(5 citation statements)

References 14 publications

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“…PMMA is a very important polymer due to its optical, electrical and mechanical properties and good thermal stability. Alamgir et al 205 selected PMMA to embed TiO 2 and graphene oxide as fillers to prepare two composites viz. PMMA/GO and PMMA/GO/TiO 2 and found the latter composite to exhibit better elastic properties and better hardness than the former, which improved its efficiency in dental application.…”

Section: Go–metal Oxide (Mo) Based Nanocompositesmentioning

confidence: 99%

Evolution of graphene oxide (GO)-based nanohybrid materials with diverse compositions: an overview

Majumder¹,

Gangopadhyay

2022

RSC Adv.

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Section: Go–metal Oxide (Mo) Based Nanocompositesmentioning

confidence: 99%

Evolution of graphene oxide (GO)-based nanohybrid materials with diverse compositions: an overview

Majumder¹,

Gangopadhyay

2022

RSC Adv.

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“…The inorganic fillers were mixed with the acrylic resin powder of PMMA using a mixing mill for 15 min to get a homogenous distribution of the phases [13].…”

Section: U R C U M I N L O a D E D G R A P H E N E O X I D E Nanosheets (Ngocur)mentioning

confidence: 99%

Influence of Antimicrobial Nanoparticles on Flexural Strength and Hardness of Polymethylmethacrylate

Khalil

Enaba

2021

Open Access Maced J Med Sci

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BACKGROUND: Polymethylmethacrylate (PMMA) is commonly used for dental appliances but has several shortcomings that could benefit from improvement with the use of nanoparticles (NPs). AIM: The purpose of this study was to modify PMMA with three different antimicrobial NPs; Graphene oxide nanosheets (nGO), Titanium dioxide NPs (TiO2 NPs) and curcumin (CUR)-loaded graphene oxide nanosheets alone, and in combination and assess the flexural strength and hardness of the different groups. MATERIALS AND METHODS: The material used in this study was chemically cured PMMA that was modified with nGO, TiO2 NPs and GOCUR alone and in combination to give 6 groups; Group A: PMMA, Group B: PMMA with nGO, Group C: PMMA with TiO2 NPs, Group D: PMMA with TiO2 and GO NPs, Group E: PMMA with GOCUR, and Group F: PMMA with TiO2 NP, and GOCUR. The Six groups were tested for flexural strength and hardness. Statistical analysis was and data were expressed as means and standard deviation. Data was explored for normality using the Kolmogorov-Smirnov test of normality. The ANOVA test was used to compare between groups, followed by Bonferroni’s post hoc test for pairwise comparison. The significance level was set at p ≤ 0.05. RESULTS: The highest flexural strength was recorded in Group C (52.26 ± 5.48 MPa) and the lowest value was in Group A (24.94 ± 5.37 MPa). The highest hardness was recorded in Group F (23.29 ± 0.8 HV) and the lowest value was in Group A (15.88 ± 1.02 HV). CONCLUSION: The modification of PMMA with NPs with proven antimicrobial activity can increase the flexural strength and hardness of the material. GO, TiO2 and, GOCUR NPs were each used alone and in different combinations, and all the groups displayed higher flexural strength and hardness than the unmodified PMMA.

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“…Polymer denture bases are primarily used to bear the flexural stresses from masticatory loads. Reinforcing the denture base PMMA with 2 wt% of TiO 2 drastically enhanced the flexural properties and antimicrobial activity of pristine PMMA denture base [40].…”

Section: Introductionmentioning

confidence: 96%

Mechanical and spectroscopic investigation of novel f-MWCNTS/g-C₃N₄/TiO₂ ternary nanocomposite reinforced denture base PMMA

Jhansi,

Sundeep,

Umadevi

et al. 2023

Phys. Scr.

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In the present work, we report the fabrication, spectroscopic and mechanical properties of the novel f-MWCNTS/g-C3N4/TiO2 (MGT-NCs) metal-free ternary nanocomposite reinforced denture base PMMA. The functionalised-MWCNTs were introduced into the graphitic carbon nitride (g-C3N4) nanopowders (NPs). The obtained high porous f-MWCNTS/g-C3N4 NPs were mixed with 10 wt. % of TiO2 NPs previously hydrothermally synthesised. These prepared powders were characterized by XRD, FE-SEM, HR-TEM, FT-IR, and Raman spectroscopy to study the crystal structure and morphology. Using a mechanical blender 2 wt. % of g-C3N4, MWCNT/g-C3N4, and MGT-NCs were sintered into PMMA heat-activated denture base polymer powder and mixed with monomer to fabricate the composites through heat curing. Three different varieties of composites specimens were prepared into flexural, impact, compression, and hardness testing standards. From the comparative assessment of results, it is found that novel MGT-NCs reinforced PMMA exhibited superior mechanical properties. The surface morphology of the fractured and compressed specimens was studied using the SEM analysis and found to have dimples and increased roughness compared to the pristine PMMA and g-C3N4, MWCNT/g-C3N4. Hence, the fabricated novel metal-free MGT-NCs can be used as a reinforcement material in PMMA denture bases to achieve a concurrent enhancement in both physical and mechanical properties.

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Graphene oxide and TiO₂ based PMMA nanocomposites for dental applications: A comprehensive study of the mechanical properties

Cited by 8 publications

References 14 publications

Evolution of graphene oxide (GO)-based nanohybrid materials with diverse compositions: an overview

Evolution of graphene oxide (GO)-based nanohybrid materials with diverse compositions: an overview

Influence of Antimicrobial Nanoparticles on Flexural Strength and Hardness of Polymethylmethacrylate

Mechanical and spectroscopic investigation of novel f-MWCNTS/g-C₃N₄/TiO₂ ternary nanocomposite reinforced denture base PMMA

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Graphene oxide and TiO2 based PMMA nanocomposites for dental applications: A comprehensive study of the mechanical properties

Cited by 8 publications

References 14 publications

Evolution of graphene oxide (GO)-based nanohybrid materials with diverse compositions: an overview

Evolution of graphene oxide (GO)-based nanohybrid materials with diverse compositions: an overview

Influence of Antimicrobial Nanoparticles on Flexural Strength and Hardness of Polymethylmethacrylate

Mechanical and spectroscopic investigation of novel f-MWCNTS/g-C3N4/TiO2 ternary nanocomposite reinforced denture base PMMA

Contact Info

Product

Resources

About

Graphene oxide and TiO₂ based PMMA nanocomposites for dental applications: A comprehensive study of the mechanical properties

Mechanical and spectroscopic investigation of novel f-MWCNTS/g-C₃N₄/TiO₂ ternary nanocomposite reinforced denture base PMMA