Surface Modification Of Implants For Bone Surgery

Marciniak, J.; Szewczenko, Janusz; Kajzer, W.

doi:10.1515/amm-2015-0357

Cited by 23 publications

(12 citation statements)

References 21 publications

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“…The electropolishing process (EP) is a widely used method of stainless steel processing, which improves its aesthetic values through smoothening and glossing the surface [1,2] and improving its corrosion resistance at the same time [3,4]. This approach has numerous applications, including the food processing industry and medicine [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Electropolishing of Stainless Steel in Laboratory and Industrial Scale

Lochyński

Charazińska

Łyczkowska-Widłak

et al. 2019

Metals

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Transposing the process scale from laboratory to industrial conditions is a difficult issue that applies to many sectors of the industry. As far as electropolishing of stainless steel is concerned, the limitations connected with a significant increase in the area of electropolished surface should be considered, along with the possibility of defects that may emerge. This paper compares the results of electropolishing of stainless steel in the laboratory and in industrial conditions. For the analyzed conditions, it was determined that the best results, both in laboratory and industrial conditions, were obtained at temperature of 35 • C and current density of 8 A·dm −2 . High temperatures resulted in the emergence of defects on the surface, in particular for industrial samples. The defects were visualized by metallographic images with Nomarski contrast and atomic force microscopy. X-ray photoelectron spectroscopy tests were used to analyze the composition of the passive layer on the electropolished surfaces.

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Section: Introductionmentioning

confidence: 99%

Electropolishing of Stainless Steel in Laboratory and Industrial Scale

Lochyński

Charazińska

Łyczkowska-Widłak

et al. 2019

Metals

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“…Controlled degradation of polymers allows them to be used as carriers of drug substances to provide drug dosing with the desired kinetics until the desired therapeutic effect is sciENcE aNd tEchNology reached [14]. These polymers have a confirmed biocompatibility [17] and their final degradation products in the form of lactic, glycolic and hydroxyhexanoic acids are inert to the body and metabolized in the Krebs cycle [16].…”

Section: Introductionmentioning

confidence: 99%

Corrosion resistance of Ti6Al4V alloy coated with caprolactone-based biodegradable polymeric coatings

Kajzer¹,

Jaworska²,

Jelonek³

et al. 2018

Eksploatacja i Niezawodność – Maintenance and Reliability

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The aim of this study was to determine the influence of long-term exposure of Ringer’s solution on degradation of the anodically oxidated Ti6Al4V alloy coated with a biodegradable polymer coating. Polymeric coatings made of poly(glycolide-ε-caprolactone) – G-Cap and poly(glycolide- ε-caprolactone-lactide) – G-Cap-L were applied by a dip-coating method. Degradation was assessed on the basis of the results of pitting corrosion resistance and density of metal ions infiltrating to the solution. Studies were conducted for samples after 3, 6, 8, 10 and 12 weeks of exposure to the corrosive environment. In addition, topography of the surface of the polymer coating was assessed. As a result of potentiodynamic studies, the value of the polarization resistance and corrosion potential for the G-Cap and G-Cap-L coated samples were significantly decreased while simultaneous reduction of the density of metal ions infiltrating to the solution throughout the whole study period. There was also observed a faster degradation of the G-Cap coating compared to G-Cap-L, which showed local discontinuity after 12 weeks of exposure. The obtained results provide the basis for the development of polymeric coatings on surface of metal implants with predictable time / kinetics of degradation by selecting the composition of polymers while simultaneous limitation of metal ions infiltration into surrounding tissues.

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“…Controlled polymer degradation allows for their use as carriers of medicinal substances, ensuring drug release with regulated dynamics to obtain the expected therapeutic effects [5]. The mentioned group of biopolymers is characterized by an appropriate biocompatibility [4], and the achieved degradation products-mainly lactic, glycolic, and hydroxyhexanoic acids-are found to be neutral to the human organism and are metabolized in accordance the Krebs cycle [6]. The basic limitation of the use of biodegradable polymers relates to the mechanical properties that change over time.…”

mentioning

confidence: 99%

“…However, metal biomaterials are characterized by a relatively low biocompatibility. Combined with the environment of tissues, body fluids, and mechanical factors, metals undergo corrosive destruction [6][7][8]. Compared to other metal biomaterials, titanium alloys show good mechanical properties that are responsible for the transfer of static and dynamic loads.…”

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confidence: 99%

Electrochemical and Biological Performance of Biodegradable Polymer Coatings on Ti6Al7Nb Alloy

et al. 2020

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The inhibition of the corrosion of metal implants is still a challenge. This study aimed to increase the corrosion resistance of Ti6Al7Nb alloy implants through surface modification, including grinding, sandblasting, and anodic oxidation followed by the deposition of a polymer coating. The aim of the work was to determine the influence of biodegradable polymer coatings on the physico-chemical properties of a Ti6Al7Nb alloy used for short-term implants. Biodegradable coatings prepared from poly(glycolide-caprolactone) (P(GCap)), poly(glycolide ε-caprolactone-lactide) (P(GCapL)), and poly(lactide-glycolide) (PLGA) were applied in the studies. The dip-coating method with three cycles of dipping was applied. Corrosion resistance was assessed on the basis of potentiodynamic studies. The studies were carried out on samples after 30, 60, and 90 days of exposure to Ringer's solution. Surface topography, wettability, and cytotoxicity studies were also carried out. The degradation process of the base material was evaluated on the basis of the mass density of the metal ions released to the solution. The results indicated the influence of the coating type on corrosion resistance. In addition, a beneficial effect of the polymer coating on the reduction of the density of the released metal ions was found, as compared to the samples without polymer coatings. The obtained results provide basic knowledge for the development of polymer coatings enriched with an active substance. The presence of ciprofloxacin in the coating did not reduce the corrosion resistance of the metal substrate. Moreover, the cytotoxicity test using the extract dilution method demonstrated that the implants' coatings are promising for further in vitro and in vivo studies.The extensive use of biodegradable polymers in medical applications is mainly associated with the possibility of tailoring their physicochemical and mechanical properties. Controlled polymer degradation allows for their use as carriers of medicinal substances, ensuring drug release with regulated dynamics to obtain the expected therapeutic effects [5]. The mentioned group of biopolymers is characterized by an appropriate biocompatibility [4], and the achieved degradation products-mainly lactic, glycolic, and hydroxyhexanoic acids-are found to be neutral to the human organism and are metabolized in accordance the Krebs cycle [6]. The basic limitation of the use of biodegradable polymers relates to the mechanical properties that change over time. This feature may be disadvantageous in some applications, e.g., orthopedic implants. Treatment disorders can be observed as the implant weakens due to degradation processes. This can lead to repeated injuries. The consequence of this is the need to perform a revision surgery combined with the removal of an incompletely degraded and mechanically weakened implant and followed by its replacement with a new one. The revision surgery due to the progressive degradation of the polymer material may be associated with serious difficulties that lead to a much ...

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Surface Modification Of Implants For Bone Surgery

Cited by 23 publications

References 21 publications

Electropolishing of Stainless Steel in Laboratory and Industrial Scale

Electropolishing of Stainless Steel in Laboratory and Industrial Scale

Corrosion resistance of Ti6Al4V alloy coated with caprolactone-based biodegradable polymeric coatings

Electrochemical and Biological Performance of Biodegradable Polymer Coatings on Ti6Al7Nb Alloy

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