Comparison of the flexural strength of polymethyl methacrylate resin reinforced with multiwalled carbon nanotubes and processed by conventional water bath technique and microwave polymerization

Somkuwar, Surabhi; Mishra, Sunil Kumar; Agrawal, Benaiffer; Choure, Rupali B

doi:10.4103/jips.jips_137_17

Cited by 13 publications

(12 citation statements)

References 28 publications

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“…A reduction in flexural strength was detected in the HP resin after immersion in Corega. Somkuwar et al [ 41 ] evaluated the effect of multiwalled carbon nanotubes (MWCNTs) on PMMA (Poly(methyl methacrylate)) denture resin flexure strength. They demonstrated how microwave-cured denture resins have better flexure strength than the water bath-cured type, and that a 0.025% or 0.050% MWCNT weight could improve this physical property.…”

Section: Resultsmentioning

confidence: 99%

“…The authors showed how heat-polymerized, auto-polymerized and visible-light-polymerized react differently. According to Somkuwar et al [ 41 ], heat-polymerized denture base resins with and without reinforcement of MWCNTs and polymerized by the microwave technique possess higher flexural strength. MWCNTs could be used as an effective reinforcement material for the denture base.…”

Section: Discussionmentioning

confidence: 99%

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Biological and Chemo-Physical Features of Denture Resins

et al. 2020

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In the dental field, the study of materials has always been the basis of the clinical practice. Over the years, with the evolution of materials, it has been possible to produce safe and predictable prosthetic devices, with ever better aesthetic features, biocompatibility and patient satisfaction. This review briefly analyzes the features of dental resin materials to underline the biological, microbiological and chemo-physical characteristics. The main aim of prosthodontics is to rehabilitate patients and therefore improve their quality of life. Dental resins are the main materials used for the production of dentures. Once solidified, these polymers have different mechanical or surface characteristics. The results of the literature on these characteristics were analyzed and some new brand dental resins, known as modern resin, were subsequently evaluated. The new materials are undoubtedly a step forward in the creation of dental prostheses, and also in all subsequent maintenance phases. This review shows how changing the chemical structure of the resins could have microbiological influences on the growth and management of the biofilm, and also physical influences in terms of its mechanical characteristics. The development of new materials is a constant goal in dentistry in order to obtain increasingly predictable rehabilitations.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Biological and Chemo-Physical Features of Denture Resins

et al. 2020

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“…The denture base materials can be strengthened to prevent fractures which is a common complication. There are some studies that have evaluated the effect of reinforcement of PMMA with different materials, but the those on the reinforcement of polyamide resin are scarce ( 7 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 33 ). In a previous study, the rigidity of dentures made of polyamide, polyester and conventional heat-polymerized PMMA were compared, and it was concluded that the polyamide, which has low elasticity, needed to be reinforced with metal frames ( 37 ).…”

Section: Discussionmentioning

confidence: 99%

“…Different methods have been developed to overcome these disadvantages such as; adding filling materials to reinforce of resins, chemical modifications of polymer with copolymerization and cross-linking of resin materials, producing new materials with different polymerization technics ( 6 , 7 , 8 ). Strengthening materials such as glass fiber, aramid fiber, nanodiamond powder, zirconium oxide, aluminum oxide, halloysite nanotubes, metal wires and carbon nanotubes can be added to denture base in order to increase fatigue resistance and fracture resistance of the prosthetic base materials ( 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ). However, the most effective reinforcement is yet to be determined ( 18 ).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of flexural properties and dynamic mechanical analysis of glass fiber-reinforced polyamide resin

Ünver¹,

Yildirim²

2021

eor

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The aim of this study was to evaluate flexural strength, elastic modulus and dynamic mechanical analysis (DMA) of heat-polymerized polymethyl methacrylate resin, polyamide resin and glass fiber-reinforced polyamide resin. Materials and MethodsThree groups were determined according to denture base materials as polymethyl methacrylate resin (H), polyamide resin (P) and glass fiber reinforced polyamide resin (R). Sixteen specimens for each denture base material were prepared with dimensions of 64x10x3.3 mm for three-point bending test. Two specimens for each denture base material were prepared with dimensions of 30x10x3 mm for DMA. Polymethyl methacrylate and polyamide specimens were prepared according to the manufacturer's recommendations. The silane was applied to glass fibers (4.5 mm length) 2% by weight of the polyamide resin, they were placed in polyamide resin cartilages and injected to the mold. The thermal aging procedure was applied to half of specimens of each material (n=8). Flexural strength and elastic modulus of the specimens were determined by three-point bending test at a speed of 5 mm/ min. DMA was performed to 1 specimen from each group to evaluate viscoelastic properties. Data were analyzed with one-way ANOVA, Tukey and Paired t tests. ResultsA statistically significant difference was found in flexural strength and elastic modulus values of denture base materials (p=0.00). The highest flexural strength and elastic modulus values were observed in polymethyl methacrylate group. There was no significant difference between polyamide and glass-fiber reinforced polyamide groups (p=0.497). No significant difference was determined in all threedenture base materials before and after aging procedure. ConclusionThe reinforcement with glass-fibers did not affect the flexural strength and elastic modulus of polyamide resin.

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“…Numerous studies in the literature evaluated the flexural strength of the various dentures base materials (10)(11)(12). However, considerable variations exist in the analysis procedures.…”

Section: Introductionmentioning

confidence: 99%

Comparison of ISO and ASTM standards in determining the flexural strength of denture base resin

2019

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Purpose:The aim of this study was to compare the differences between the ASTM D790 and ISO 20795.1.2013 standards in evaluating the flexural strength of heat cure poly methyl methacrylate (PMMA) denture base resin.Materials and methods:30 heat cure denture base samples were fabricated in accordance to ISO 20795.1.2013 and ASTM D790 Standards. The specimens were finished and stored following the standardized protocol. The flexural strength was determined using universal testing machine at cross head speed of 1.50 mm/min and a span length of 40.00 mm. The mean flexural strength values were calculated in megapascals (MPa), and statistically analyzed.Results:The mean flexural strength of heat cure PMMA found with ISO and ASTM ranged between 60.492 MPa and 61.470 MPa. There was no significant difference between the two methods.Conclusion:The quantitative differences existed in the flexural strength of denture base resin between ISO 20795.1.2013 and ASTM 790 protocols but those differences had no statistical and clinical significance.

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Comparison of the flexural strength of polymethyl methacrylate resin reinforced with multiwalled carbon nanotubes and processed by conventional water bath technique and microwave polymerization

Cited by 13 publications

References 28 publications

Biological and Chemo-Physical Features of Denture Resins

Biological and Chemo-Physical Features of Denture Resins

Evaluation of flexural properties and dynamic mechanical analysis of glass fiber-reinforced polyamide resin

Comparison of ISO and ASTM standards in determining the flexural strength of denture base resin

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