Carbon Nanotubes

Martins‐Júnior, Paulo Antônio; Alcântara, Carlos Eduardo Pinto; Resende, Rodrigo R.; Ferreira, Anderson J.

doi:10.1177/0022034513490957

Cited by 50 publications

(8 citation statements)

References 59 publications

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“…Electrospinning is considered to be the most viable methodology for the generation of scaffolds with varying compositions, according to the target tissues, and with a nanofibrous morphology [104]. Nanotubes, compared to nanosphere nanocarriers, provide larger inner volumes for filling desired chemicals or biochemical species and offers distinct inner and outer surfaces that can be differentially functionalized [124,125]. …”

Section: Nanostructured Materials In Use For Tissue Engineering Inmentioning

confidence: 99%

Nanomaterials for Tissue Engineering In Dentistry

et al. 2016

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The tissue engineering (TE) of dental oral tissue is facing significant changes in clinical treatments in dentistry. TE is based on a stem cell, signaling molecule, and scaffold triad that must be known and calibrated with attention to specific sectors in dentistry. This review article shows a summary of micro- and nanomorphological characteristics of dental tissues, of stem cells available in the oral region, of signaling molecules usable in TE, and of scaffolds available to guide partial or total reconstruction of hard, soft, periodontal, and bone tissues. Some scaffoldless techniques used in TE are also presented. Then actual and future roles of nanotechnologies about TE in dentistry are presented.

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Section: Nanostructured Materials In Use For Tissue Engineering Inmentioning

confidence: 99%

Nanomaterials for Tissue Engineering In Dentistry

et al. 2016

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“…The inner diameter of MWCNTs ranges in between 1 and 3 nm and outer diameter ranges in between 2 and 100 nm and their length varies in between 0.2 to several micrometers. [ 12 13 ] CNTs had tensile strengths 4000 times stronger than steel and almost 200 times stronger than carbon fibers. The carbon matrix formed by CNTs and PMMA was very large, with a greater bond and thus the compressive strength and mechanical fatigue strength were enhanced.…”

Section: Introductionmentioning

confidence: 99%

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

Mishra

Agrawal

et al. 2017

J Indian Prosthodont Soc

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Purpose:This in vitro study was done to compare the flexural strength of polymethyl methacrylate resin reinforced with multiwalled carbon nanotubes (MWCNTs) and processed by conventional water bath technique and using microwave energy.Materials and Methods:A total of 180 acrylic resin specimens measuring 65 mm × 10 mm × 2.5 mm were fabricated, with conventional water bath groups and microwave group having ninety specimens each. Ninety specimens were divided into thirty specimens as control and subgroups containing 0.025% MWCNTs and 0.050% MWCNTs with thirty specimens each. The specimens were tested for flexural strength by three-point bending test on universal testing machine. The statistical analysis was done using Student's t-test and one-way analysis of variance, and the intercomparison between each group was done using Tukey's post hoc analysis.Results:The mean flexural strength of specimens cured by water bath technique was 95.563 MPa and microwave technique was 118.416 MPa. Control Group B possesses highly significant increase in flexural strength than Control Group A with P < 0.01. Unpaired Student's t-test showed that Subgroup B1 and Subgroup B2 possess highly significant increase in flexural strength than Subgroup A1and Subgroup A2.Conclusion:Heat polymerized denture base resin with and without reinforcement of MWCNTs and polymerized by microwave technique possess higher flexural strength than heat polymerized fiber reinforced denture resin polymerized by water bath technique. MWCNTs could be used as an effective reinforcement material for denture base resin polymerized by either water bath technique or microwave energy.

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“…Although there have been studies examining the synthesis, characterization, and properties of CNTs, further in vitro and in vivo studies are needed to better comprehend the effects of this nanomaterial on bone repair and regeneration before it can be safely used in humans ( 26 ). In this study, we aimed to evaluate the effects of HY, CNTs, and HY-CNTs on the biological behavior of primary osteoblasts, and to investigate the deposition of inorganic crystals on titanium surfaces coated with these biocomposites.…”

Section: Introductionmentioning

confidence: 99%

Single-walled carbon nanotubes functionalized with sodium hyaluronate enhance bone mineralization

Sá

Ribeiro

Valverde

et al. 2016

Braz J Med Biol Res

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The aim of this study was to evaluate the effects of sodium hyaluronate (HY), single-walled carbon nanotubes (SWCNTs) and HY-functionalized SWCNTs (HY-SWCNTs) on the behavior of primary osteoblasts, as well as to investigate the deposition of inorganic crystals on titanium surfaces coated with these biocomposites. Primary osteoblasts were obtained from the calvarial bones of male newborn Wistar rats (5 rats for each cell extraction). We assessed cell viability using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide assay and by double-staining with propidium iodide and Hoechst. We also assessed the formation of mineralized bone nodules by von Kossa staining, the mRNA expression of bone repair proteins, and the deposition of inorganic crystals on titanium surfaces coated with HY, SWCNTs, or HY-SWCNTs. The results showed that treatment with these biocomposites did not alter the viability of primary osteoblasts. Furthermore, deposition of mineralized bone nodules was significantly increased by cells treated with HY and HY-SWCNTs. This can be partly explained by an increase in the mRNA expression of type I and III collagen, osteocalcin, and bone morphogenetic proteins 2 and 4. Additionally, the titanium surface treated with HY-SWCNTs showed a significant increase in the deposition of inorganic crystals. Thus, our data indicate that HY, SWCNTs, and HY-SWCNTs are potentially useful for the development of new strategies for bone tissue engineering.

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Carbon Nanotubes

Cited by 50 publications

References 59 publications

Nanomaterials for Tissue Engineering In Dentistry

Nanomaterials for Tissue Engineering In Dentistry

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

Single-walled carbon nanotubes functionalized with sodium hyaluronate enhance bone mineralization

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