Key Properties of a Bioactive Ag-SiO2/TiO2 Coating on NiTi Shape Memory Alloy as Necessary at the Development of a New Class of Biomedical Materials

被引：15

作者：

Dulski, Mateusz ^{[1
,2
]}

Gawecki, Robert ^{[2
,3
]}

Sulowicz, Slawomir ^{[4
]}

Cichomski, Michal ^{[5
]}

Kazek-Kesik, Alicja ^{[6
]}

Wala, Marta ^{[6
]}

Lesniak-Ziolkowska, Katarzyna ^{[6
]}

Simka, Wojciech ^{[6
]}

Mrozek-Wilczkiewicz, Anna ^{[2
,3
]}

Gaweda, Magdalena ^{[7
]}

Sitarz, Maciej ^{[7
]}

Dudek, Karolina ^{[8
]}

机构：

[1] Univ Silesia Katowice, Fac Comp Sci & Mat Sci, Inst Mat Engn, 75 Pulku Piechoty 1A, PL-41500 Chorzow, Poland

[2] Univ Silesia Katowice, Silesian Ctr Educ & Interdisciplinary Res, 75 Pulku Piechoty 1A, PL-41500 Chorzow, Poland

[3] Univ Silesia Katowice, Fac Comp Sci & Mat Sci, A Chelkowski Inst Phys, 75 Pulku Piechoty 1A, PL-41500 Chorzow, Poland

[4] Univ Silesia Katowice, Fac Nat Sci, Inst Biol Biotechnol & Environm Protect, Jagiellonska 28, PL-40032 Katowice, Poland

[5] Univ Lodz, Fac Chem, Dept Mat Technol & Chem, Pomorska 163, PL-90236 Lodz, Poland

[6] Silesian Tech Univ, Fac Chem, B Krzywoustego 6, PL-44100 Gliwice, Poland

[7] AGH Univ Sci & Technol, Fac Mat Sci & Ceram, Mickiewicza 30, PL-30059 Krakow, Poland

[8] Inst Ceram & Bldg Mat, Lukasiewicz Res Network, Refractory Mat Div Gliwice, Toszecka 99, PL-44100 Gliwice, Poland

来源：

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES | 2021年 / 22卷 / 02期

关键词：

hybrid Ag-SiO2 coating; wettability; tribology; surface roughness; ion release; antimicrobial studies; cell viability; cell adhesion;

D O I：

10.3390/ijms22020507

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Recent years have seen the dynamic development of methods for functionalizing the surface of implants using biomaterials that can mimic the physical and mechanical nature of native tissue, prevent the formation of bacterial biofilm, promote osteoconduction, and have the ability to sustain cell proliferation. One of the concepts for achieving this goal, which is presented in this work, is to functionalize the surface of NiTi shape memory alloy by an atypical glass-like nanocomposite that consists of SiO2-TiO2 with silver nanoparticles. However, determining the potential medical uses of bio(nano)coating prepared in this way requires an analysis of its surface roughness, tribology, or wettability, especially in the context of the commonly used reference coat-forming hydroxyapatite (HAp). According to our results, the surface roughness ranged between (112 +/- 3) nm (Ag-SiO2)-(141 +/- 5) nm (HAp), the water contact angle was in the range (74.8 +/- 1.6)degrees (Ag-SiO2)-(70.6 +/- 1.2)degrees (HAp), while the surface free energy was in the range of 45.4 mJ/m(2) (Ag-SiO2)-46.8 mJ/m(2) (HAp). The adhesive force and friction coefficient were determined to be 1.04 (Ag-SiO2)-1.14 (HAp) and 0.247 +/- 0.012 (Ag-SiO2) and 0.397 +/- 0.034 (HAp), respectively. The chemical data showed that the release of the metal, mainly Ni from the covered NiTi substrate or Ag from Ag-SiO2 coating had a negligible effect. It was revealed that the NiTi alloy that was coated with Ag-SiO2 did not favor the formation of E. coli or S. aureus biofilm compared to the HAp-coated alloy. Moreover, both approaches to surface functionalization indicated good viability of the normal human dermal fibroblast and osteoblast cells and confirmed the high osteoconductive features of the biomaterial. The similarities of both types of coat-forming materials indicate an excellent potential of the silver-silica composite as a new material for the functionalization of the surface of a biomaterial and the development of a new type of functionalized implants.

引用

页码：1 / 17

页数：17