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Ohl, A.; ̈der, K. Schro; Keller, D.; Meyer‐Plath, Asmus; Bienert, H.; Husen, B.; Rune, G.M.

doi:10.1023/a:1008943625715

Cited by 32 publications

(9 citation statements)

References 9 publications

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“…Micro-patterning biomedical surfaces by plasma Cells are sensible to topographic and chemical features of sub-micrometric dimensions [16,18]; random and geometrical micro-and nano-metric patterns transferred at the surface of biomedical polymers are known for their ability, in certain contests, of driving the adhesion, motion, spreading and growth steps of cells at their surface. This effect, known as "contact guidance", is quite far, yet, from being completely understood, but could be utilized in a number of fundamental studies and practical applications for biosensors, diagnostic kits and tissue engineering [13][14][15][16][17][18]. Experiments in this last field, for example, include the use of surface-patterned biodegradable polymers as scaffolds for cell cultures.…”

Section: Pe-cvd Of -Coon Functional Coatingsmentioning

confidence: 99%

“…), with lateral dimensions of a few micron at the lowest, can be developed at the surface of polymers by means of plasma processes performed through "physical masks", i, e., micronthick polymer or metal foils, where holes of proper size and shape are precisely drilled, e.g., by laser techniques. When properly positioned at the surface of the polymer under modification, and utilized with selected plasma processes, physical masks allow to transfer their pattern, with the best reported resolution of a few microns [13][14][15].…”

Section: Pe-cvd Of -Coon Functional Coatingsmentioning

confidence: 99%

“…Since quite recently, combined PE-CVD, treatment and etching processes are utilized also to transfer geometric micrometric patterns at the surface of biomedical polymers [13][14][15], with the aim of driving the behaviour of cells (contact guidance [16][17][18]), for example in tissue engineering.…”

Section: Introductionmentioning

confidence: 99%

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Functionalization of Biomedical Polymers by Means of Plasma Processes: Plasma Treated Polymers with Limited Hydrophobic Recovery and PE-CVD of -COOH Functional Coatings.

Sardella¹,

Gristina²,

Milella³

et al. 2002

J. Photopol. Sci. Technol.

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Section: Pe-cvd Of -Coon Functional Coatingsmentioning

confidence: 99%

Section: Pe-cvd Of -Coon Functional Coatingsmentioning

confidence: 99%

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Functionalization of Biomedical Polymers by Means of Plasma Processes: Plasma Treated Polymers with Limited Hydrophobic Recovery and PE-CVD of -COOH Functional Coatings.

Sardella¹,

Gristina²,

Milella³

et al. 2002

J. Photopol. Sci. Technol.

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“…However, to achieve adequate bond strength between PEEK and resin composite materials are difficult due to its low surface energy and resistance to surface modification by different chemical treatments [7,8]. Currently, industry bonds elastomers to PEEK classically by conventional abrasive treatment, acid etching, plasma or laser techniques to prepare the engineering plastics surface followed by the application of epoxy adhesives.…”

Section: Introductionmentioning

confidence: 99%

Influence of plasma pretreatment on shear bond strength of self-adhesive resin cements to polyetheretherketone

et al. 2013

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OBJECTIVES: The aim of this study is to evaluate the adhesion between PEEK and two selfadhesive resin cements after plasma treatment. METHODS: Eight hundred sixty-four polyetheretherketone (PEEK) disks were cut and polished to silicon carbide (SIC) P4000. One half of the specimens were randomly selected and pretreated with plasma, whereas the remaining 432 specimens remained untreated. Subsequently, specimens were randomly allocated to four groups (n = 108/group): Visio.link (Bredent), Signum PEEK Bond (Heraeus Kulzer), Ambarino P60 (Creamed), and a control group without additional treatment. Half of the specimens of each group (n = 54) were then cemented with either RelyX Unicem Automix 2 (3 M ESPE) or with Clearfil SA (Kuraray). All specimens were stored in water for 24 h (37°C ). Afterwards, specimens were divided into three groups (n = 18) for different aging levels: (1) no aging (baseline measurement), (2) thermal aging for 5,000 cycles (5/55°C), and (3) thermal aging for 10,000 cycles (5/55°C). Thereafter, shear bond strengths (SBS) were measured, and failure types (adhesive, mixed, and cohesive) were assessed. Data were analyzed using descriptive statistics, four-and one-way ANOVA followed by a post hoc Scheffé test (p < 0.05). RESULTS: No adhesion could be established without adhesive pretreatment, irrespectively, whether plasma was applied or not. Also, no bond strength was measured when Ambarino P60 was applied. In contrast, adhesive pretreatment resulted in SBS ranging between 8 and 15 MPa. No significant differences were found between the resin cements used. In general, no cohesive failures were observed. Groups without plasma treatment combined with Visio.link or Signum PEEK Bond showed predominantly mixed failure types. Control groups, plasma treated, or treated using Ambarino P60 groups fractured predominantly adhesively. CONCLUSION: The use of methyl methacrylate (MMA)-based adhesives allows bonding between PEEK and self-adhesive resin cements. Plasma treatment has no impact on bond to resin cements. CLINICAL SIGNIFICANCE: PEEK reconstructions can be cemented using self-adhesive resin cements combined with pretreatment with MMA-based adhesives. Methods: Eight-hundred-and-sixty-four PEEK disks were cut and polished to silicon carbide (SIC) P4000. One half of the specimens was randomly selected and pre-treated with plasma, whereas the remaining 432 specimens remained untreated. Subsequently, specimens were randomly allocated to four groups (n=108/group): Visio.link (Bredent), Signum PEEK Bond (Heraeus Kulzer), Ambarino P60 (Creamed) and a control group without additional treatment. Half of the specimens of each group (n=54) were then cemented with either RelyX Unicem Automix 2 (3M ESPE) or with Clearfil SA (Kuraray).All specimens were storage in water for 24 h (37°C). Afterwards, specimens were divided into three groups (n=18) for different aging levels: i. no aging (baseline measurement), ii.thermal aging for 5000 cycles (5/55°C) and iii. thermal aging for 10000 cycles (5/55°C).Thereafte...

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“…2,4,11 Also, the existence of well-defined geometrical features could be qualitatively demonstrated by fluorescence microscopy. 4 Here, polystyrene (PS) surfaces were first functionalized in an NH 3 .…”

Section: Sample Preparation and Analytical Equipmentmentioning

confidence: 94%

Visualization of a plasma‐generated chemical micro‐pattern on polystyrene by XPS

Schröder

Babucke

Ohl

2004

Surface & Interface Analysis

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Chemical microstructures on polymer surfaces are of increasing interest for biological applications. Here, the potential of high-resolution XPS (spatially as well as energetically) was investigated for characterization of these patterns. Chemical modifications obtained on non-patterned samples were compared to chemical contrasts inside the 30-200 µm wide patterns on polystyrene (PS).Chemical contrasts in micro-patterns down to 30 µm could be verified by small-spot XPS and imaging XPS. While features with typical dimensions of some hundred micrometres were reproduced with high contrasts and a chemical composition comparable to non-patterned samples, blurred information was found for spectroscopy as well as imaging of micro-patterns with typical dimensions less than 100 µm.

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Cited by 32 publications

References 9 publications

Functionalization of Biomedical Polymers by Means of Plasma Processes: Plasma Treated Polymers with Limited Hydrophobic Recovery and PE-CVD of -COOH Functional Coatings.

Functionalization of Biomedical Polymers by Means of Plasma Processes: Plasma Treated Polymers with Limited Hydrophobic Recovery and PE-CVD of -COOH Functional Coatings.

Influence of plasma pretreatment on shear bond strength of self-adhesive resin cements to polyetheretherketone

Visualization of a plasma‐generated chemical micro‐pattern on polystyrene by XPS

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