Solubility, ductility and resilience of a PMMA denture resin with graphene and silver nanoparticles addition

Bacali, Cecilia; Buduru, Smaranda; Năstase, Vivi; Craciun, Antarinia; Prodan, Doina; Constantiniuc, Mariana; Badea, Mândra; Moldovan, Mărioara; Saroși, Codruța

doi:10.24193/subbchem.2019.2.40

Cited by 6 publications

(3 citation statements)

References 32 publications

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“…Fractures in materials depend on heterogeneity, interfacial adhesion between the components of the materials, and the structure of the content. 9 It was observed that the nanoparticles were agglomerated in the SEM images obtained, and the increase in concentration increased the amount of agglomeration. It is thought that the resulting agglomeration affects the bond strength negatively, as reported in studies.…”

Section: Discussionmentioning

confidence: 94%

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Effect of Graphene Oxide Incorporation on the Strength of Denture Repair Resin

Basmaci,

Avukat,

Akay

et al. 2024

ECS J. Solid State Sci. Technol.

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To evaluate the effect of incorporating graphene oxide nanoparticles (GO NPs) and graphene sheets on the flexural strength of an auto-polymerized (AP) acrylic resin-repaired denture. 60 heat-activated (HA) resin specimens were fabricated and randomly divided into 6 groups (n = 10). The specimens in Group I were kept intact. 50 specimens were cut into two parts with a 45-degree bevel. Group II specimens were repaired with AP resin and Group III specimens were repaired with HA resin. In the repair of Group IV, Group V, and Group VI specimens, 1%, 2% GO NPs, and graphene sheets were added to AP resin, respectively. A 3-point bending test with a universal test device measured the flexural strength. Statistical analyses of the results were performed with the Kruskal Wallis H-test. (α=0.05) The flexural strength of Group I (130.05±20.20 MPa) was the highest among all groups. The flexural strength of Group IV (67.49±12.70 MPa) was significantly higher than Group V (50.87±15.02 MPa) and Group VI (44.77±10.70 MPa). The lowest strength value was obtained in Group VI. Adding 1% GO NPs to AP acrylic resins increases flexural strength. However, the increase in nanoparticle concentration and the addition of graphene sheets negatively affect strength.

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Section: Discussionmentioning

confidence: 94%

“…[2][3][4][5]8 In recent years, graphene and its derivatives have been used to improve the mechanical and biological properties of polymers. 2,9,10 Graphene is a crystalline form of carbon. It has a honeycomb-like structure that increases the surface area.…”

mentioning

confidence: 99%

Effect of Graphene Oxide Incorporation on the Strength of Denture Repair Resin

Basmaci,

Avukat,

Akay

et al. 2024

ECS J. Solid State Sci. Technol.

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“…Other studies using graphene silver nanoparticles to improve PMMA's mechanical proprieties have shown that in a concentration of 1wt%, the nanoparticles have a beneficial effect on the resin's modulus of resilience but decrease the ductility. On the other hand, a 2wt% concentration improved resilience and reduced ductility [26].…”

Section: Discussionmentioning

confidence: 97%

Improving the Mechanical Properties of Orthodontic Occlusal Splints Using Nanoparticles: Silver and Zinc Oxide

et al. 2023

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The goal of the current study was to determine the mechanical proprieties of polymethylmethacrylate (PMMA) and the improved compound, the graphene-based PMMA, with Zn and Ag and to compare the results. Scanning electron microscopy analysis of the samples before and after the mechanical test was conducted. The compression behavior, flexural properties, tensile strength, and shape of the samples were all investigated and compared between the variants of PMMA. Commercially available polymethylmethacrylate was used (Orthocryl®—Dentaurum, Ispringen, Germany) with the salt and pepper technique according to the manufacturer’s instructions to produce 20 samples for each mechanical trial with standard cylinders (4 mm diameter × 8 mm length) for compression, parallelepipedal prisms for flexing (2 mm × 2 mm × 25 mm) and flat samples for traction. There was no statistical difference in the mechanical proprieties of the samples evaluated, although there were values that could suggest significance. The graphene-based PMMA demonstrated good mechanical proprieties, like the commercially available PMMA, and appears promising for future clinical use based on its multiple advantages.

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