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
CountryEstonia
CityTallinn
Period21/06/201723/06/2017

Keywords

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

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