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Oral Poster

Bacterial adhesion to PEEK compared to exemplary dental ceramic, metallic and composite materials

Tuesday (09.05.2017)
18:57 - 19:00
Part of:
18:00 Oral Poster Fibrinogen Adsorption and Network Formation on Melt Drawn Isotactic Polybutene-1 Thin Films 1 Xiaoyuan Zhang
18:03 Oral Poster Characterization of biomaterials using AFM based fast nanoscale imaging and quantitative nanomechanical techniques 1 Dr. Tanja Neumann
18:06 Oral Poster Hydrothermal conversion of porous Ca carbonate biominerals into bioactive Ca phosphate materials: towards antibiotic and antiosteoporotic bone graft substitutes 1 Dr. Ingo Sethmann
18:09 Oral Poster Study on the retarding effect of phytic acid on the hydration of a brushite cement 1 Dr. Katrin Hurle
18:12 Oral Poster Synthesis of hollow mesoporous bioactive glass nanoparticles with uniform size and shape 1 Kai Zheng
18:15 Oral Poster Systematic post-operative clinical assessment of lumbar ventrolateral vertebroplasty in the large animal model sheep using a minimally-invasive approach 1 Francesca Gunnella
18:18 Oral Poster Dual setting system – characterization of PEG-based-hydrogel/brushite composites for biomedical application 1 Michaela Rödel
18:21 Oral Poster The effect of HAc etching on the degradation behaviour of Mg-5Gd 1 Dr. Frank Feyerabend
18:24 Oral Poster Degradation behavior of as cast and powder metallurgy processed Mg-Ca alloys 0 Dipl.-Ing. Eshwara Phani Shubhakar Nidadavolu
18:27 Oral Poster Bio-inspired high-performance green biopolymer fibers 1 Dr. Hendrik Bargel
18:30 Oral Poster Diatom Biosilica for Catalytic and Adsorptive Applications 1 Cathleen Fischer
18:33 Oral Poster Gallotannin polyphenol enhancement of biomimetic enzymatic hydrogel mineralization 1 Dr. Timothy E.L. Douglas
18:36 Oral Poster Starch in textile application: Modification, processing and product development 1 Pavan Kumar Manvi
18:39 Oral Poster Recombinant Spider Silk Proteins Used as Biomedical Coating Material 1 Christian Borkner
18:42 Oral Poster Effects of cross-linking modifications on Collagen: a preliminary biological evaluation 1 Dr. Mattia Vacchini
18:45 Oral Poster Endothelialization of polymethylpentene fibers as a step towards patient-specific medical devices 1 M.Sc. Annika Wenz
18:48 Oral Poster Hybrid poly-lactide/gelatin electrospun scaffolds with controlled hydrophilicity and wettability. 1 Germano Piccirillo
18:51 Oral Poster Funktion and structure - Combined optical functionality and specific bio-interaction for multifunctional biomedical materials 1 Dr. Tina Sabel
18:57 Oral Poster Bacterial adhesion to PEEK compared to exemplary dental ceramic, metallic and composite materials 1 Dr. Lutz Scheideler
19:00 Oral Poster Attachment of Nanoparticle Drug-Release Systems on Shish-Kebab structured Poly(?-Caprolactone) Nanofibers 1 Dominik de Cassan
19:06 Oral Poster Improved Nanofleeces for Cell Culture Applications 1 Tobias Kürbitz

Session P.1: Oral Poster Session 1
Belongs to:
Topic P: Postersession

PEEK (Poly ether etherketone), is an increasingly used alternative material in the dental field, e. g. for abutments or denture frameworks, especially for CAD/CAM-manufactured restorations. Peek offers several advantages, it is easily machinable, elastic and does not release metal ions.

Besides fulfilling the required mechanical properties for the respective application, dental materials should not favour the adhesion of oral microorganisms. To address this point, we investigated the initial plaque adhesion to two commercially available dental PEEK materials (BioHPP and BioHPP dentin-shade 2, bredent, Germany), compared with two dental composites (Tetric EvoCeram, ESPE Sinfony), two metal-based materials (titanium, brealloy F400) and two ceramics (Vita VM13, e.max Press), respectively.

Round sample discs (14 mm diam., 2mm height) of the 8 materials were polished with abrasive SiC papers up to P4000. Ra of the samples ranged between 0.04 µm for BioHPP and 0.11 µm for Vita VM13, respectively. Bacterial adhesion was quantified in an experimental stop/flow model consisting of an intermittently stirred reaction vessel in which the samples were subjected to mixed oral bacterial cultures from five volunteers. After 4 h incubation, bacteria adhering to the respective samples were quantified by a luminescence assay. Statistical differences between groups were analysed by ANOVA (p<0.05).

The lowest bacterial adhesion was observed on the ceramic and metallic samples, however, differences were only minor. The mean relative adhesion of bacteria to BioHPP did not significantly differ from the tested ceramics, metallic materials, or the polymer-based composites. The only statistically significant difference was observed between the ceramics and metals on the one hand and BioHPP dentinshade 2, which showed an approximately doubled amount of adhered bacteria compared to the former materials. With respect to clinical performance, however, this difference can be regarded as irrelevant.

Provision of samples by bredent GmbH & Co.KG is gratefully acknowledged.


Dr. Lutz Scheideler
University Hospital Tübingen
Additional Authors:
  • Mara Spiesshofer
    University Hospital Tuebingen
  • Dr. Frank Rupp
    University Hospital Tuebingen
  • Sebastian Spintzyk
    University Hospital Tuebingen
  • Prof. Dr. Jürgen Geis-Gerstorfer
    University Hospital Tuebingen