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Poster

Influence of fluoride corrosion attack on the metal-porcelain bond strength of TiCr20 compared to titanium

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- Plenary Lecture Test Ploetz 1 Alexia Ploetz
- Poster Investigating Dynamic Biological Processes with High-Speed, High-Resolution Correlative AFM-Light Microscopy 1 Oilibhe Pabsch
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- Poster Cytotoxicity of gold nanorods and nanoribbons in context of biomedical applications 1 Marika Musielak
- Poster Preliminary studies of synthesis of gold nanoribbons using selected dicationic surfactants 1 Joanna Patalas
- Poster Diclofenac release from a silicon based hydrogel for contact lenses controlled by a layer-by-layer coating 1 Prof. Ana Serro
- Poster Synthesis, solubility and optical activity of chiral poly(2,4-disubstituted-2-oxazoline)s 1 Mengshi Yang
- Poster Influence of Cu2+-doping in β-TCP on the hydration kinetics of brushite cement investigated by Rietveld analysis and heat flow calorimetry 1 Karla Späth
- Poster Analytical investigation of the influence of micro- and nanoplastic particles in crop plants by electron microscopic imaging and spectroscopy 1 Dr. Jörg Wissler
- Poster Influence of fluoride corrosion attack on the metal-porcelain bond strength of TiCr20 compared to titanium 1 Christine Schille
- Poster Bacterial nanocellulose loaded with frankincense extract as natural wound dressing to treat local dermal inflammations 1 Berit Karl
- Poster Graded functionalization of polydopamine coated fiber mats as potential implant for tendon-bone-transition 1 Sarah Oehmichen
- Poster Enhancing the functionalities of bioactive glass-based scaffolds by novel polymeric coatings 1 Dr. Liliana Liverani
- Poster Durability analysis of the cryopreservation of DNA origami nanostructures 1 Yang Xin
- Poster Effects of staple age on DNA origami nanostructure assembly and stability 1 Charlotte Kielar
- Poster Dual-setting brushite-silica gel cements – Variations of the monomer precursors and tuning of the setting parameters 1 Ib Holzmeister
- Poster Novel QCM-D/microscopy set-up for real-time analysis of bacterial binding onto biomaterial-coated sensors 1 Dr. Zeqian Xu
- Poster Chairside plasma activation of encapsulated implants: how fast is it? 1 Miguel Angel Garcia Chame
- Poster Nanostructured high-pressure laminate surfaces to reduce transmission pathways of pathogens in public transportation 1 Christian Helbing
- Poster Biomineralization of Recombinant Spider Silk Films 1 Vanessa J. Neubauer
- Poster Modification of bacterial cellulose to enhance anti-inflammatory wound dressing properties 1 Uwe Beekmann
- Poster Absolute Characterization of Synthetic Macromolecules used in Biomaterials Science Applications 1 Mandy Grube
- Poster Biodegradable thermoplastic materials for bimodal imaging containing the mineral present in the human body 1 Zaneta Górecka
- Poster Nano-rough titanium surfaces created by wet alkaline etching and PVD and their influence on bacterial adhesion as well as protein adsorption 1 Michaela Schürmann
- Poster Effective strategies for the controlling and dealing with transmission pathway of pathogens in air traffi 1 Christian Helbing
- Poster Cytotoxicity evaluation of biodegradable Zn-4Cu alloy using L929, Saos-2 and TAg cell lines 1 Ping Li
- Poster Influence of pulsed bias voltage on the tribological and morphological properties of a-C coatings deposited by an anodic arc method 1 Dipl.-Ing. Ingo Erdmann

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Introduction: Titanium is known to be attacked by fluoride ions, especially at low pH. To overcome this problem, titanium-chromium alloys are promising candidates. The aim of this study was to investigate the influence of corrosive pretreatment on the metal-porcelain bond strength of TiCr20 compared to commercial pure titanium.

Material and Methods: From each alloy, 20 strips (25 × 3 × 0.5 mm3) were cast, sandblasted and veneered with Ceramotion Ti (Dentaurum, Ispringen) according to the manufacturer's instructions. For the immersion test, 0.9% saline solution was used, which was adjusted to pH 5 with lactic acid and to 1400 ppm F- with addition of NaF. Each sample was placed in a 15 ml tube, filled with 5 ml of electrolyte, and stored at 37 °C in a heating cabinet. Over a period of 7.5 days, the electrolytes were changed daily and Ti release was analyzed by ICP-OES (Optima 4300 DV, Perkin Elmer). The bond strength was calculated according to ISO 9693-1:2012 without and after 7.5 days of corrosion.

Results: Bond strength values without and after 7.5 days of corrosion were 43.0 ± 4.4 MPa and 31.2 ± 2.8 MPa for titanium, and 35.5 ± 3.3 MPa and 29.5 ± 1.6 MPa for TiCr20, respectively.

The accumulated Ti release after 7.5 days of immersion was 8.89 ± 1.38 μg/cm2 for TiCr20 and 17.24 ± 2.84 μg/cm2 for titanium.

Conclusion:

• Bond strength was higher for titanium than for TiCr20.

• The decrease in bond strength due to corrosion was 27.4 % (Ti-cp) and 11.9 % (TiCr20).

• In comparison with titanium, TiCr20 showed a higher corrosion resistance in fluoride-containing electrolyte.

• Due to the fluoride corrosion effect, the bond strength of both alloys decreased, but all values were above the 25 MPa required by the ISO 9693-1:2012.

Acknowledgment: Special thanks to Dentaurum for casting the samples.

Speaker:
Christine Schille
University Hospital Tübingen
Additional Authors:
  • Prof. Dr. Juergen Geis-Gerstorfer
    University Hospital Tübingen
  • Dr. Tomofumi Sawada
    Iwate Medical University
  • Prof. Dr. S. Takemoto
    Iwate Medical University