Surface degradation of nanocrystalline zirconia dental implants

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    Abstract

    Yttria-stabilized zirconia prepared by hot isostatic pressing represents attractive material for biomedical applications. In this work the degradation of yttria-stabilized zirconia dental implants abutments due to the tetragonal to monoclinic phase transformation after one year of clinical use was studied in detail. Microstructural characterization by Electron Back Scattering Diffraction was successfully applied. The amount and distribution of the monoclinic phase, the grain-size distribution and crystallographic orientations between tetragonal and monoclinic crystals in 3 mol.% yttria-stabilized polycrystalline zirconia were determined in two different types of abutments currently used in clinical practice. Clear crystallographic orientation relationship between parent tetragonal and daughter monoclinic phase was clearly observed. An important and novel conclusion is that no substantial bulk degradation of 3Y-TZP dental implant abutments was detected after 1 year of clinical use.

    Original languageEnglish
    Title of host publicationWIT Transactions on Engineering Sciences
    PublisherWIT Press
    Pages355-365
    Number of pages11
    Volume116
    ISBN (Print)9781784661977
    DOIs
    Publication statusPublished - 2017
    Event8th International Conference on Computational Methods and Experiments in Material and Contact Characterisation, Materials Characterisation 2017 - Tallinn, Estonia
    Duration: 21-Jun-201723-Jun-2017

    Conference

    Conference8th International Conference on Computational Methods and Experiments in Material and Contact Characterisation, Materials Characterisation 2017
    Country/TerritoryEstonia
    CityTallinn
    Period21/06/201723/06/2017

    Keywords

    • Degradation
    • Dental implants
    • Electron backscatter diffraction
    • Nano-crystalline
    • Yttria-stabilized zirconia

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