Surface functionalization of polytetrafluoroethylene substrate with hybrid processes comprising plasma treatment and chemical reactions

Cheng, Bohan; Inoue, Yasuo; Ishihara, Kazuhíko

doi:10.1016/j.colsurfb.2018.09.051

Cited by 38 publications

(27 citation statements)

References 70 publications

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“…These results suggested that our methods for the PEEK film modification may be useful for the clinical applications. Moreover, a previous result confirmed that the PDA-coating process was performed after plasma pretreatment for the reinforcement of the adhesive force and the stability of the PDA-coating layer on the polytetrafluoroethylene (PTFE) substrates (Cheng et al, 2019). Therefore, the modification of PDA coating with plasma pretreatment on the PEEK surface may have great potential to provide an effective and durable bond with primary molar teeth.…”

Section: Resultsmentioning

confidence: 82%

Combination of Polydopamine Coating and Plasma Pretreatment to Improve Bond Ability Between PEEK and Primary Teeth

Teng

Meng

Zhao

et al. 2021

Front. Bioeng. Biotechnol.

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Preformed crowns are preferred to reduce the failure risk of restoration of primary teeth, but some drawback of conventional material is still a main barrier for their clinical use. Polyether etherketone (PEEK), a tooth colored, high-performance thermoplastic polymer, has been recognized as a promising alternative to manufacture the restoration of primary teeth. However, the hydrophobic surface and low surface energy of PEEK make it hard to establish a strong and durable adhesion. In this study, we have evaluated a modification method of polydopamine (PDA) coating with plasma pretreatment for the PEEK films by physical and chemical characterization, bonding properties, and biocompatibility. The surface properties of PEEK were well-characterized by scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). The adhesive strength of the PEEK films was greatly improved without significant reduction of the proliferation rate of human gingival fibroblast cells in MTT and Live/Dead assays. Therefore, PDA coating with plasma pretreatment may give a new solution for effective clinical application of PEEK in primary performed crowns.

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Section: Resultsmentioning

confidence: 82%

Combination of Polydopamine Coating and Plasma Pretreatment to Improve Bond Ability Between PEEK and Primary Teeth

Teng

Meng

Zhao

et al. 2021

Front. Bioeng. Biotechnol.

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“…When a surface comes into contact with blood, plasma proteins adsorb a monolayer on the material within seconds and the protein configuration is dependent on a variety of factors, including the chemical and physicochemical properties of the surface [ 12 , 50 , 51 , 52 ]. Albumin has been shown to demonstrate higher adsorption onto PTFE surfaces than fibrinogen [ 52 ].…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies throughout the literature have produced conflicting results on the surface properties that are thought to influence the hygienic status of the surface in the presence of blood. The topographical [ 8 ] and surface wettability [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ] effects of polymers and their influence on surface fouling have been considered, although the overall effects of such surface factors on the hygienic status of the surfaces remain unclear.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Surface Topography and Wettability on Escherichia coli Removal from Polymeric Materials in the Presence of a Blood Conditioning Film

Akhidime

Slate

Hulme

et al. 2020

IJERPH

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The reduction of biofouling and the reduction of cross-contamination in the food industry are important aspects of safety management systems. Polymeric surfaces are used extensively throughout the food production industry and therefore ensuring that effective cleaning regimes are conducted is vital. Throughout this study, the influence of the surface characteristics of three different polymeric surfaces, polytetrafluoroethylene (PTFE), poly(methyl methacrylate) (PMMA) and polyethylene terephthalate (PET), on the removal of Escherichia coli using a wipe clean method utilising 3% sodium hypochlorite was determined. The PTFE surfaces were the roughest and demonstrated the least wettable surface (118.8°), followed by the PMMA (75.2°) and PET surfaces (53.9°). Following cleaning with a 3% sodium hypochlorite solution, bacteria were completely removed from the PTFE surfaces, whilst the PMMA and PET surfaces still had high numbers of bacteria recovered (1.2 × 107 CFU/mL and 6.3 × 107 CFU/mL, respectively). When bacterial suspensions were applied to the surfaces in the presence of a blood conditioning film, cleaning with sodium hypochlorite demonstrated that no bacteria were recovered from the PMMA surface. However, on both the PTFE and PET surfaces, bacteria were recovered at lower concentrations (2.0 × 102 CFU/mL and 1.3 × 103 CFU/mL, respectively). ATP bioluminescence results demonstrated significantly different ATP concentrations on the surfaces when soiled (PTFE: 132 relative light units (RLU), PMMA: 80 RLU and PET: 99 RLU). Following cleaning, both in the presence and absence of a blood conditioning film, all the surfaces were considered clean, producing ATP concentrations in the range of 0–2 RLU. The results generated in this study demonstrated that the presence of a blood conditioning film significantly altered the removal of bacteria from the polymeric surfaces following a standard cleaning regime. Conditioning films which represent the environment where the surface is intended to be used should be a vital part of the test regime to ensure an effective disinfection process.

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“…The coating of a silicon substrate with MPC polymers was carried out using the same procedure as described previously for polymer substrate. 37 The thickness of the polymer layer under air conditions was determined by spectroscopic ellipsometry (FE-5000S, Otsuka Electronics Co., Ltd., Osaka, Japan). Data for each sample were collected at five different positions.…”

Section: Spectroscopic Ellipsometry Measurementsmentioning

confidence: 99%

Biomimetic phospholipid polymers for suppressing adsorption of saliva proteins on dental hydroxyapatite substrate

Ishihara

Kozaki

Inoue

et al. 2020

J of Applied Polymer Sci

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To prevent infectious diseases induced by the adhesion of microorganisms and their metabolic products to dental implants, saliva protein adsorption, which induces the plaque deposition to the intraoral substrates should be inhibited. We used a water-soluble 2-methacryloyloxyethyl phosphorylcholine (MPC) polymer to modify the surface of hydroxyapatite (HAp) substrate, the main component of dental implant surface. The MPC polymer containing a catechol group at the terminal of polymer chain and amino groups in the side chain was synthesized by mimicking the mussel adhesive protein. The MPC polymer containing 2% of the primary amino groups showed effective adhesion to the HAp substrate. Mucin, the dental plaque protein, adsorbs on the HAp surface; however, the MPC polymer modification could reduce this adsorption amount by more than 98% compared to the original HAp substrate surface. Thus, the treatment of the MPC polymer has potential to reduce oral infection due to plaque deposition.

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Surface functionalization of polytetrafluoroethylene substrate with hybrid processes comprising plasma treatment and chemical reactions

Cited by 38 publications

References 70 publications

Combination of Polydopamine Coating and Plasma Pretreatment to Improve Bond Ability Between PEEK and Primary Teeth

Combination of Polydopamine Coating and Plasma Pretreatment to Improve Bond Ability Between PEEK and Primary Teeth

The Influence of Surface Topography and Wettability on Escherichia coli Removal from Polymeric Materials in the Presence of a Blood Conditioning Film

Biomimetic phospholipid polymers for suppressing adsorption of saliva proteins on dental hydroxyapatite substrate

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