|
1
|
Neacsu IA, Arsenie LV, Trusca R, Ardelean IL, Mihailescu N, Mihailescu IN, Ristoscu C, Bleotu C, Ficai A, Andronescu E. Biomimetic Collagen/Zn 2+-Substituted Calcium Phosphate Composite Coatings on Titanium Substrates as Prospective Bioactive Layer for Implants: A Comparative Study Spin Coating vs. MAPLE. NANOMATERIALS 2019; 9:nano9050692. [PMID: 31058851 PMCID: PMC6566990 DOI: 10.3390/nano9050692] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 04/22/2019] [Accepted: 04/26/2019] [Indexed: 01/20/2023]
Abstract
Synthesis of biomimetic materials for implants and prostheses is a hot topic in nanobiotechnology strategies. Today the major approach of orthopaedic implants in hard tissue engineering is represented by titanium implants. A comparative study of hybrid thin coatings deposition was performed by spin coating and matrix-assisted pulsed laser evaporation (MAPLE) onto titanium substrates. The Collagen-calcium phosphate (Coll-CaPs) combination was selected as the best option to mimic natural bone tissue. To accelerate the mineralization process, Zn2+ ions were inserted by substitution in CaPs. A superior thin film homogeneity was assessed by MAPLE, as shown by scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) microscopy. A decrease of P-O and amide absorbance bands was observed as a consequence of different Zn2+ amounts. A variety of structural modifications of the apatite layer are then generated, which influenced the confinement process towards the collagen template. The in-vitro Simulated Body Fluid (SBF) assay demonstrated the ability of Coll/Zn2+-CaPs coatings to stimulate the mineralization process as a result of synergic effects in the collagen-Zn2+ substituted apatite. For both deposition methods, the formation of droplets associated to the growth of CaPs particulates inside the collagen matrix was visualized. This supports the prospective behavior of MAPLE biomimetic coatings to induce mineralization, as an essential step of fast implant integration with vivid tissues.
Collapse
Affiliation(s)
- Ionela Andreea Neacsu
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Polizu Street No.1, 011061 Bucharest, Romania.
| | - Laura Vasilica Arsenie
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Polizu Street No.1, 011061 Bucharest, Romania.
| | - Roxana Trusca
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Polizu Street No.1, 011061 Bucharest, Romania.
| | - Ioana Lavinia Ardelean
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Polizu Street No.1, 011061 Bucharest, Romania.
| | - Natalia Mihailescu
- National Institute for Laser, Plasma and Radiation Physics, Atomiştilor Street No. 409, 077125 Măgurele, Romania.
| | - Ion Nicolae Mihailescu
- National Institute for Laser, Plasma and Radiation Physics, Atomiştilor Street No. 409, 077125 Măgurele, Romania.
| | - Carmen Ristoscu
- National Institute for Laser, Plasma and Radiation Physics, Atomiştilor Street No. 409, 077125 Măgurele, Romania.
| | - Coralia Bleotu
- Stefan S. Nicolau' Institute of Virology, Romanian Academy, 011061 Bucharest, Romania.
| | - Anton Ficai
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Polizu Street No.1, 011061 Bucharest, Romania.
- Academy of Romanian Scientists, Splaiul Independentei Street No. 54, 011061 Bucharest, Romania.
| | - Ecaterina Andronescu
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Polizu Street No.1, 011061 Bucharest, Romania.
- Academy of Romanian Scientists, Splaiul Independentei Street No. 54, 011061 Bucharest, Romania.
| |
Collapse
|