Polycaprolactone/fluoride substituted-hydroxyapatite (PCL/FHA) nanocomposite coatings prepared by in-situ sol-gel process for dental implant applications

Ansari, Zahra; Kalantar, M.; Kharaziha, Mahshid; Ambrosio, Luigi; Raucci, Maria Grazia

doi:10.1016/j.porgcoat.2020.105873

Cited by 47 publications

(29 citation statements)

References 47 publications

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“…Furthermore, the addition of PCL decreased the corrosion current and improved the corrosion resistance, lowest corrosion current was found with HAp-50% PCL sample. Similarly, Ansari et al [ 151 ] confirmed the active role of PCL in improving the biological, physical and electrochemical properties of FHAp coatings. Contrary to Mohd et al investigation, the PCL considered as a matrix and consist up to 30 wt.% of FHAp, and the resulted composite deposited on alkali-treated Ti alloy via sol-gel dip-coating.…”

Section: Reinforcement Of Sol-gel Derived Hydroxyapatite By Composmentioning

confidence: 82%

Sol-Gel Derived Hydroxyapatite Coatings for Titanium Implants: A Review

et al. 2020

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With the growing demands for bone implant therapy, titanium (Ti) and its alloys are considered as appropriate choices for the load-bearing bone implant substitutes. However, the interaction of bare Ti-based implants with the tissues is critical to the success of the implants for long-term stability. Thus, surface modifications of Ti implants with biocompatible hydroxyapatite (HAp) coatings before implantation is important and gained interest. Sol-gel is a potential technique for deposition the biocompatible HAp and has many advantages over other methods. Therefore, this review strives to provide widespread overview on the recent development of sol-gel HAp deposition on Ti. This study shows that sol-gel technique was able to produce uniform and homogenous HAp coatings and identified the role of surface pretreatment of Ti substrate, optimizing the sol-gel parameters, substitution, and reinforcement of HAp on improving the coating properties. Critical factors that influence on the characteristics of the deposited sol-gel HAp films as corrosion resistance, adhesion to substrate, bioactivity, morphological, and structural properties are discussed. The review also highlights the critical issues, the most significant challenges, and the areas requiring further research.

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Section: Reinforcement Of Sol-gel Derived Hydroxyapatite By Composmentioning

confidence: 82%

Sol-Gel Derived Hydroxyapatite Coatings for Titanium Implants: A Review

et al. 2020

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“…Meanwhile, in the samples with higher HA amount (CS/50 wt.% HA and CS/60 wt.% HA coatings) some clusters of HA nanoparticles were observed. Furthermore, the size/shape of HA crystalline depends on the [Ca 2+ ] and [PO 4 3− ] ion concentration or the rate of crystalline growth [ 44 ]. Indeed, SEM images and EDS mapping of CS/HA coating consisting of 50 and 60 wt.% HA indicated that higher [Ca 2+ ] and [PO 4 3− ] concentration accelerated the crystalline growth rate and agglomeration.…”

Section: Resultsmentioning

confidence: 99%

In-Situ Synthesis and Characterization of Chitosan/Hydroxyapatite Nanocomposite Coatings to Improve the Bioactive Properties of Ti6Al4V Substrates

et al. 2020

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Ti6Al4V alloy is still attracting great interest because of its application as an implant material for hard tissue repair. This research aims to produce and investigate in-situ chitosan/hydroxyapatite (CS/HA) nanocomposite coatings based on different amounts of HA (10, 50 and 60 wt.%) on alkali-treated Ti6Al4V substrate through the sol-gel process to enhance in vitro bioactivity. The influence of different contents of HA on the morphology, contact angle, roughness, adhesion strength, and in vitro bioactivity of the CS/HA coatings was studied. Results confirmed that, with increasing the HA content, the surface morphology of crack-free CS/HA coatings changed for nucleation modification and HA nanocrystals growth, and consequently, the surface roughness of the coatings increased. Furthermore, the bioactivity of the CS/HA nanocomposite coatings enhanced bone-like apatite layer formation on the material surface with increasing HA content. Moreover, CS/HA nanocomposite coatings were biocompatible and, in particular, CS/10 wt.% HA composition significantly promoted human mesenchymal stem cells (hMSCs) proliferation. In particular, these results demonstrate that the treatment strategy used during the bioprocess was able to improve in vitro properties enough to meet the clinical performance. Indeed, it is predicted that the dense and crack-free CS/HA nanocomposite coatings suggest good potential application as dental implants.

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“…The O1s peak for the rod without amalgam ( Figure 7 ) demonstrated a depth-dependent relative intensity of the lattice site oxygen (530.5 eV) and terminating/bridging hydroxyl groups (531.3 eV) [ 24 , 43 , 48 ]. As the sputter profile continues, the hydroxyl peak intensity disappears as the bulk of the sample is reached.…”

Section: Resultsmentioning

confidence: 99%

“…Coating with a Ti-X alloy may be preferential, as the coating will adhere strongly to the underlying Ti [ 17 , 18 , 19 , 20 , 21 , 22 , 23 ]. Other coatings based on Ta, BN, Nb, NbO, NbN, NbC, hydroxyapatite, and CuO have also been explored [ 18 , 24 , 25 , 26 , 27 , 28 ]. The problem with any thin-film coating is the problematic screwing of the implant into the mandible, which can wear down and away the coating.…”

Section: Introductionmentioning

confidence: 99%

The Galvanic Effect of Titanium and Amalgam in the Oral Environment

et al. 2020

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The effects of the presence of amalgam on titanium (Ti) dissolution in the oral environment under acidic, neutral, and basic conditions was studied. The presence of amalgam was found to suppress Ti release under acidic conditions due to the redeposition of TiOx/SnOx on the surface of the Ti. The redeposition of SnOx was due to the amalgam releasing its components (Hg, Cu, Sn, Ag) and the thermodynamic preference of Sn to oxidize, which was confirmed using mass measurements, ICP-MS analyses, and X-ray Photoelectron Spectroscopy (XPS). XPS depth profiling was performed to characterize the composition and oxidation states of the redeposited SnOx/TiOx film. Under basic conditions, the amalgam hindered Ti dissolution, but no redeposition of amalgam components was observed for the Ti.

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Polycaprolactone/fluoride substituted-hydroxyapatite (PCL/FHA) nanocomposite coatings prepared by in-situ sol-gel process for dental implant applications

Cited by 47 publications

References 47 publications

Sol-Gel Derived Hydroxyapatite Coatings for Titanium Implants: A Review

Sol-Gel Derived Hydroxyapatite Coatings for Titanium Implants: A Review

In-Situ Synthesis and Characterization of Chitosan/Hydroxyapatite Nanocomposite Coatings to Improve the Bioactive Properties of Ti6Al4V Substrates

The Galvanic Effect of Titanium and Amalgam in the Oral Environment

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