Investigation on Biological Properties of Dental Implant by Ce-TZP/Al2O3/ HA Bio-nano-composites

Yousefpour, Maryam; Askari, Nayereh; Abdollah-Pour, Hassan; Amanzadeh, A.; Riahi, Nastaran

doi:10.4172/2155-952x.1000105

Cited by 10 publications

(6 citation statements)

References 16 publications

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“…Furthermore, the density of the specimen with low HA is relatively identical to the density values noted in the theory. The increase in HA concentration resulted in the difference between the measured density and the theoretical density increasing [ 71 ].…”

Section: Resultsmentioning

confidence: 99%

Characterization of PLA/PCL/Nano-Hydroxyapatite (nHA) Biocomposites Prepared via Cold Isostatic Pressing

et al. 2023

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Hydroxyapatite has the closest chemical composition to human bone. Despite this, the use of nano-hydroxyapatite (nHA) to produce biocomposite scaffolds from a mixture of polylactic acid (PLA) and polycaprolactone (PCL) using cold isostatic pressing has not been studied intensively. In this study, biocomposites were created employing nHA as an osteoconductive filler and a polymeric blend of PLA and PCL as a polymer matrix for prospective usage in the medical field. Cold isostatic pressing and subsequent sintering were used to create composites with different nHA concentrations that ranged from 0 to 30 weight percent. Using physical and mechanical characterization techniques such as Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and density, porosity, tensile, and flexural standard tests, it was determined how the nHA concentrations affected the biocomposite’s general properties. In this study, the presence of PLA, PCL, and nHA was well identified using FTIR, XRD, and SEM methods. The biocomposites with high nHA content showed intense bands for symmetric stretching and the asymmetric bending vibration of PO43−. The incorporation of nHA into the polymeric blend matrix resulted in a rather irregular structure and the crystallization became more difficult. The addition of nHA improved the density and tensile and flexural strength of the PLA/PCL matrix (0% nHA). However, with increasing nHA content, the PLA/PCL/nHA biocomposites became more porous. In addition, the density, flexural strength, and tensile strength of the PLA/PCL/nHA biocomposites decreased with increasing nHA concentration. The PLA/PCL/nHA biocomposites with 10% nHA had the highest mechanical properties with a density of 1.39 g/cm3, a porosity of 1.93%, a flexural strength of 55.35 MPa, and a tensile strength of 30.68 MPa.

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Section: Resultsmentioning

confidence: 99%

Characterization of PLA/PCL/Nano-Hydroxyapatite (nHA) Biocomposites Prepared via Cold Isostatic Pressing

et al. 2023

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“…It could be reduction adhesion strength (mechanical properties) during implantation in vivo [8], [49]. A TCP phases work out fast dissolution and will bind with bone tissue so decline adhesion strength with the material [52]. This is the crucial problem when applied in the biomedical application so needed the effort to control the phase formation.…”

Section: Resultsmentioning

confidence: 99%

Hydroxyapatite Coating on Titanium Alloy Ti-6Al-4V with Electrophoretic Deposition (EPD) for Dental Root Application

Juliadmi

Fauzi

Gunawarman

et al. 2017

International Journal on Advanced Science, Engineering and Information Technology

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An α+β type titanium alloy, Ti-6Al-4V, has been coated with hydroxyapatite through electrophoretic deposition (EPD) method to improve quality of the alloy surface, in order to fulfill bioactivity requirement for orthodontic application as dental roots. The deposition process was conducted by EPD at different voltages (2 volts, 5 volts, and 10 volts) and time (2 minutes and 5 minutes). After deposition, the material was heated at temperature 700 o C for 1 hour using a vacuum furnace. Coated samples analysis was conducted by scanning electron microscope (SEM) and energy dispersive X-ray (EDX) to examine coating layer morphology and its chemical composition, respectively. Experimental results showed that the voltage and time deposition gives different effects to surface coverage and thickness of hydroxyapatite layers. Optimum layer for dental roots is obtained from the voltage of 5 volts for 5 minutes with 100% surface coverage value and 45.55μm in thickness. With low voltage and short deposition time for making a uniform coating layer, this process is much cheaper than other processes, and it is predicted to be favorable for improving osseointegration of dental roots.

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“…However, some impure phases (TCP) exist in the coating that is due to the partial decomposition of HA at 800 °C in the furnace under inert atmosphere. The small amount of TCP in HA coating causes the faster bonding to bone in body environment due to the rapid dissolution of TCP . However, mechanical properties and chemical stability can be weakened by high amount of TCP.…”

Section: Resultsmentioning

confidence: 99%

Effect of hydroxyapatite coating fabricated by electrophoretic deposition method on corrosion behavior and nickel release of NiTi shape memory alloy

Maleki-Ghaleh

Khalil‐Allafi

Khalili

et al. 2013

Materials & Corrosion

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Natural hydroxyapatite (HA) was coated on NiTi alloy using electrophoretic deposition method to improve the corrosion resistance and biocompatibility. Coating process was performed at 120 s in various applied voltages of 40, 60, and 80 V. Sintering process was done at 800 8C under inert gas for 2 h. Electrochemical behavior of the coated samples was investigated in simulated body fluid by using electrochemical impedance spectroscopy and polarization tests. Furthermore, the nickel ions release from NiTi and HA coated-NiTi samples were analyzed by atomic absorption analysis. Ultimately, scanning electron microscopy micrographs and X-ray diffraction patterns were used to evaluate the morphology and phase analysis of HA coatings. The results show that the sample coated at 60 V reveals a uniform, dense coating accompanied with a higher corrosion resistance. Moreover, after 4 weeks, nickel ions release was reduced to 0.205 mg/cm 2 for coated sample at 60 V.

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Investigation on Biological Properties of Dental Implant by Ce-TZP/Al2O3/ HA Bio-nano-composites

Cited by 10 publications

References 16 publications

Characterization of PLA/PCL/Nano-Hydroxyapatite (nHA) Biocomposites Prepared via Cold Isostatic Pressing

Characterization of PLA/PCL/Nano-Hydroxyapatite (nHA) Biocomposites Prepared via Cold Isostatic Pressing

Hydroxyapatite Coating on Titanium Alloy Ti-6Al-4V with Electrophoretic Deposition (EPD) for Dental Root Application

Effect of hydroxyapatite coating fabricated by electrophoretic deposition method on corrosion behavior and nickel release of NiTi shape memory alloy

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