期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 40, 期 12, 页码 4304-4314出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2020.03.049
关键词
Zirconia; Grinding; Mechanical properties; Hydrothermal degradation; Cell adhesion
资金
- Ministerio de Ciencia, Innovacion y Universidades [MAT2017-83905-R]
- Generalitat de Catalunya [2017 SGR-933, SGR-1165]
- CREATe-Network Project, Horizon 2020 Program of the European Commission [644013]
- Barcelona Research Center in Multiscale Science and Engineering of the UPC
- Generalitat de Catalunya
- Spanish Government
The changes in mechanical properties, hydrothermal degradation and cell adhesion were studied in 3Y-TZP under two different superficial modification patterns (uni- and multidirectional) with a surface roughness ranging from 16 to 603 nm. In this sense, mechanical properties (i.e. hardness, indentation fracture toughness and scratch) and accelerated tests in water steam were measured to evaluate the influence of the surface treatments on the superficially modified layer. Moreover, a detailed characterization through micro-Raman spectroscopy and X-Ray diffraction was performed. Finally, SaOS-2 osteoblasts were used for the evaluation of the cell adhesion behaviour on the surfaces. Overall, ground/polished specimens increased the mechanical properties and ageing resistance of mirror-like polished specimens, although resistance to degradation was maximum at intermediate conditions (S-a approximate to 40 -180 nm). The studied surfaces allowed cell attachment, but promoted contact guidance (i.e. cell alignment) only on unidirectionally ground surfaces above Sa = 150 nm.
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