The impact of different low-pressure plasma types on the physical, chemical and biological surface properties of PEEK

Fu, Qian; Gabriel, Matthias; Schmidt, Franziska; Müller, Wolf‐Dieter; Schwitalla, Andreas Dominik

doi:10.1016/j.dental.2020.09.020

Cited by 37 publications

(29 citation statements)

References 32 publications

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“…The water contact angle (WCA) measurement results are shown in Figure 7. The WCA of control material (PEEK) equaled to 74 ± 3 • , which is closed to values reported by other authors for untreated PEEK [16,17,37,38]. The modification in the presence of oxygen slightly increased the wettability of the PEEK surface, the contact angle decreased with the increase of the number of EUV pulses and amounted to 71 ± 6 • , 67 ± 10 • and 64 ± 5 • for PEEK-O 2 -100, PEEK-O 2 -150 and PEEK-O 2 -200, respectively.…”

Section: Wettabilitysupporting

confidence: 70%

“…The value measured for PEEK-O 2 -200 was significantly lower (p < 0.05) compared to the control. Other authors also reported a decrease in WCA values for PEEK treated with plasma in the presence of oxygen [17]. PEEK modified using nitrogen gas did not show significant differences in WCA values compared to the control material.…”

Section: Wettabilitymentioning

confidence: 79%

“…Specifically, N 2 plasma treatment increased osteogenic activity the most, whereas Ar and Ar + N 2 plasma treatment impacted the antibacterial performance the most. Fu et al [17] modified the PEEK surface using three types of plasmas: hydrogen, oxygen, and H 2 /O 2 mixture. They observed that all PEEK surfaces modified this way presented improved hydrophilicity, crystallinity, and micro-hardness properties.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Extreme Ultraviolet (EUV) Radiation and EUV Induced, N2 and O2 Based Plasmas on a PEEK Surface’s Physico-Chemical Properties and MG63 Cell Adhesion

Czwartos

Budner

Bartnik

et al. 2021

IJMS

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Polyetheretherketone (PEEK), due to its excellent mechanical and physico-chemical parameters, is an attractive substitute for hard tissues in orthopedic applications. However, PEEK is hydrophobic and lacks surface-active functional groups promoting cell adhesion. Therefore, the PEEK surface must be modified in order to improve its cytocompatibility. In this work, extreme ultraviolet (EUV) radiation and two low-temperature, EUV induced, oxygen and nitrogen plasmas were used for surface modification of polyetheretherketone. Polymer samples were irradiated with 100, 150, and 200 pulses at a 10 Hz repetition rate. The physical and chemical properties of EUV and plasma modified PEEK surfaces, such as changes of the surface topography, chemical composition, and wettability, were examined using atomic force microscopy (AFM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and goniometry. The human osteoblast-like MG63 cells were used for the analysis of cell viability and cell adhesion on all modified PEEK surfaces. EUV radiation and two types of plasma treatment led to significant changes in surface topography of PEEK, increasing surface roughness and formation of conical structures. Additionally, significant changes in the chemical composition were found and were manifested with the appearance of new functional groups, incorporation of nitrogen atoms up to ~12.3 at.% (when modified in the presence of nitrogen), and doubling the oxygen content up to ~25.7 at.% (when modified in the presence of oxygen), compared to non-modified PEEK. All chemically and physically changed surfaces demonstrated cyto-compatible and non-cytotoxic properties, an enhancement of MG63 cell adhesion was also observed.

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Section: Wettabilitysupporting

confidence: 70%

Section: Wettabilitymentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

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Effect of Extreme Ultraviolet (EUV) Radiation and EUV Induced, N2 and O2 Based Plasmas on a PEEK Surface’s Physico-Chemical Properties and MG63 Cell Adhesion

Czwartos

Budner

Bartnik

et al. 2021

IJMS

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show abstract

“…17,[19][20][21] Wang et al 22 found PEEK and Variolink achieved the highest bonding strength when treated by nitrogen plasma for 25 min. Fu et al 23 demonstrated that low-pressure plasma treatments had a significant impact on the hydrophilicity, crystallinity, and thus microhardness of PEEK surfaces and caused a substantially increased adhesion property of PEEK surfaces. Among these methods, laser treatment is a promising green high-tech alternative because of its high resolution, high operating speed, plastic/metal applicability and processing flexibility.…”

Section: Introductionmentioning

confidence: 99%

“…Wang et al 22 found PEEK and Variolink achieved the highest bonding strength when treated by nitrogen plasma for 25 min. Fu et al 23 demonstrated that low‐pressure plasma treatments had a significant impact on the hydrophilicity, crystallinity, and thus microhardness of PEEK surfaces and caused a substantially increased adhesion property of PEEK surfaces.…”

Section: Introductionmentioning

confidence: 99%

Effect of IR‐laser treatment parameters on surface structure, roughness, wettability and bonding properties of fused deposition modeling‐printed PEEK/CF

Wang

Sang

et al. 2021

J of Applied Polymer Sci

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In this study, laser surface treatment was applied to alter the surface texturing and chemical compositions of fused deposition modeling (FDM)-printed PEEK/CF samples to improve the deficiency of inert surface of PEEK as adherend substrate. The influence of IR-laser parameters including treatment gaps, single pulse energy and pulse widths on surface properties and shear bond strength were discussed. The results indicated that surface roughness was enhanced with decreasing treatment gap or increasing pulse energy, which reached the highest value of Ra = 32.44 μm at 0.4*0.4 mm 2 treatment gap and 300 mJ single pulse energy. By adjusting laser pulse width, surface wettability changed from hydrophobicity to hydrophilicity. After micro-second laser ablation, the texturing structure was changed and acted as mechanical interlocking effect, and therefore make the shear bond strengths improve from 3.28 to 6.42 MPa compared with the untreated groups. On the other hand, functional groups on substrate surface were activated after nano-second laser ablation, which contributes to an enhancement of shear bond strength through chemical interaction between adhesives and substrates. Therefore, our work highlights an efficient method of laser surface treatment on the adhesion property of FDM-printed substrates.

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Plasma Cleaning for Implant Surfaces to Improve Implant Success

Farhadi,

Romanos

2024

Saving Dental Implants

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The impact of different low-pressure plasma types on the physical, chemical and biological surface properties of PEEK

Cited by 37 publications

References 32 publications

Effect of Extreme Ultraviolet (EUV) Radiation and EUV Induced, N2 and O2 Based Plasmas on a PEEK Surface’s Physico-Chemical Properties and MG63 Cell Adhesion

Effect of Extreme Ultraviolet (EUV) Radiation and EUV Induced, N2 and O2 Based Plasmas on a PEEK Surface’s Physico-Chemical Properties and MG63 Cell Adhesion

Effect of IR‐laser treatment parameters on surface structure, roughness, wettability and bonding properties of fused deposition modeling‐printed PEEK/CF

Plasma Cleaning for Implant Surfaces to Improve Implant Success

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