Surface properties and bacterial behavior of micro conical dimple textured Ti6Al4V surface through micro-milling

Jain, Ankit; Kumari, Nisha; Jagadevan, Sheeja; Bajpai, Vivek K.

doi:10.1016/j.surfin.2020.100714

Cited by 22 publications

(13 citation statements)

References 36 publications

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“…Few researchers have studied the effect of microtextures on wetting systems. Jain et al [ 25 ] examined conical dimple textures of different densities on Ti6Al4V fabricated by micro-milling and they showed that SFE values changed for samples of different densities. Wang i in.…”

Section: Discussionmentioning

confidence: 99%

“…To the best of our knowledge, only Jain et al [ 25 ]. have studied the effect of texture density on bacterial adhesion.…”

Section: Discussionmentioning

confidence: 99%

“…have studied the effect of texture density on bacterial adhesion. Jain et al [ 25 ] showed that cell densities are different for samples with different density of textures. Xu and Siedlecki [ 9 ] indicated that the size, spacing and shape of the produced surface features play a significant role in cell adhesion.…”

Section: Discussionmentioning

confidence: 99%

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Surface Properties of Ti6Al7Nb Alloy: Surface Free Energy and Bacteria Adhesion

Krzywicka

Szymańska

Tofil

et al. 2022

JFB

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The laser micro-machining was carried out on a station equipped with a TruMicro 5325c laser emitting ultraviolet radiation (343 nm wavelength) in picosecond pulses. On the surface of the Ti6Al7Nb alloy, dimple texturing with a constant diameter of ~200 μm, different depths (from ~5 to ~78 μm) and density (from 10% to 50%) were produced. The value of surface free energy was determined with the Owens–Wendt method using two measuring liquids: distilled water and diodomethane. The Staphylococcus epidermidis strain was used to test the adhesion of bacteria. It was found that the surface free energy value is influenced by both of the texture parameters (density, depth). The density also affects the potential for biofilm formation. Based on the analysis, it was shown that with an increase in surface free energy, the number of adhering microorganisms increases exponentially. Moreover, the study shows that there is a correlation between the number of adhering microorganisms and surface free energy.

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Section: Discussionmentioning

confidence: 99%

“…To the best of our knowledge, only Jain et al [ 25 ]. have studied the effect of texture density on bacterial adhesion.…”

Section: Discussionmentioning

confidence: 99%

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Surface Properties of Ti6Al7Nb Alloy: Surface Free Energy and Bacteria Adhesion

Krzywicka

Szymańska

Tofil

et al. 2022

JFB

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“…The high bacterial adhesion observed in anodized specimens is in accordance with the linear relationship between high SFE and the number of adherent bacteria reported in the literature [ 43 ]. Furthermore, it appears that marked hydrophobicity reduces bacterial adhesion [ 44 , 45 ], while up to now no dependence between bacterial adhesion and topographical characteristics has been found [ 46 , 47 ].…”

Section: Discussionmentioning

confidence: 99%

Bacterial and Cellular Response to Yellow-Shaded Surface Modifications for Dental Implant Abutments

et al. 2022

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Dental implants have dramatically changed the rehabilitation procedures in dental prostheses but are hindered by the possible onset of peri-implantitis. This paper aims to assess whether an anodization process applied to clinically used surfaces could enhance the adhesion of fibroblasts and reduce bacterial adhesion using as a reference the untreated machined surface. To this purpose, four different surfaces were prepared: (i) machined (MAC), (ii) machined and anodized (Y-MAC), (iii) anodized after sand-blasting and acid etching treatment (Y-SL), and (iv) anodized after double acid etching (Y-DM). All specimens were characterized by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). Moreover, the mean contact angle in both water and diiodomethane as well as surface free energy calculation was assessed. To evaluate changes in terms of biological responses, we investigated the adhesion of Streptococcus sanguinis (S. sanguinis) and Enterococcus faecalis (E. faecalis), fetal bovine serum (FBS) adsorption, and the early response of fibroblasts in terms of cell adhesion and viability. We found that the anodization reduced bacterial adhesion, while roughened surfaces outperformed the machined ones for protein adsorption, fibroblast adhesion, and viability independently of the treatment. It can be concluded that surface modification techniques such as anodization are valuable options to enhance the performance of dental implants.

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“…Wang et al, 2016 [21] shown that combining micromilling and anodization led to better cell adhesion. In a recently published article on micro dimples, indicated that micro-textures type conical modify bacterial adhesion on the surface [8].…”

Section: Introductionmentioning

confidence: 99%

Tool Feed and Burr Size Influence on Wettability of Ti6Al4V Micro End-Milled

Ferreira

Martinelli

Rodrigues

et al. 2021

IJEMM

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Surface texturing, using micro-milling, has promising applications in the industry of medical implants, since it can assist cell adhesion and thus improve osseointegration. Ti6Al4V alloy is used as implant material due to its excellent biocompatibility and high mechanical strength. However, those mechanical properties reduce machinability creating some challenges for micro-milling. The way to initially assess cell adhesion is using surface wettability, usually conducted with water. At the present work, micro-channels were machined in Ti6Al4V by micro end-milling with 500 µm width per 50 µm depth with 1000 µm distant from each other. The effect of feed per tooth (fz) on wettability was analysed and some interesting relations with burrs formed on channel walls were obtained. Values of feed per tooth were 3, 6, 12 and 15 µm. Wettability results showed that slotted surface is more hydrophilic on channel direction, with contact angles around 30° to 43°. In contrast, on the perpendicular direction the surface tends to be hydrophobic with contact angles between 75° and 146°. In addition, contact angle increases (hydrophobic tendency) as feed per tooth increases (along with roughness), even on channel direction. The presence of burrs also tends to disturb wettability results. Therefore, surface wettability depends on channel direction, burr size and tool feed per tooth, as well.

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Surface properties and bacterial behavior of micro conical dimple textured Ti6Al4V surface through micro-milling

Cited by 22 publications

References 36 publications

Surface Properties of Ti6Al7Nb Alloy: Surface Free Energy and Bacteria Adhesion

Surface Properties of Ti6Al7Nb Alloy: Surface Free Energy and Bacteria Adhesion

Bacterial and Cellular Response to Yellow-Shaded Surface Modifications for Dental Implant Abutments

Tool Feed and Burr Size Influence on Wettability of Ti6Al4V Micro End-Milled

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