0531638 - ÚFM 2021 RIV NL eng J - Journal Article
Fintová, Stanislava - Kuběna, Ivo - Palán, J. - Mertová, K. - Duchek, M. - Hutař, Pavel - Pastorek, F. - Kunz, Ludvík
Influence of sandblasting and acid etching on fatigue properties of
ultra-fine grained Ti grade 4 for dental implants.
Journal of the Mechanical Behavior of Biomedical Materials. Roč. 111, NOV (2020), č. článku 104016. ISSN 1751-6161. E-ISSN 1878-0180
R&D Projects: GA MŠMT(CZ) LQ1601
Institutional support: RVO:68081723
Keywords : Fatigue * CP Ti grade 4 * UFG * Fatigue crack initiation * SLA
OECD category: Materials engineering
Impact factor: 3.902, year: 2020 ; AIS: 0.807, rok: 2020
Method of publishing: Limited access
Result website:
https://www.sciencedirect.com/science/article/pii/S1751616120305671?via%3DihubDOI: https://doi.org/10.1016/j.jmbbm.2020.104016

Commercially pure Ti is a typical material for dental implants. Besides oral environmental effects, implants are seriously mechanically loaded during the lifetime. Mechanical resistance of coarse and ultra-fine grained Ti grade 4 was investigated. Significant grain size refinement resulting in the 65% increase of the proof stress is reported. The fatigue endurance limit increased from 523 MPa to 698 MPa due to grain refinement. The influence of sandblasting combined with acid etching on fatigue damage of both material states was analyzed. The surface treatment was proven as detrimental to the fatigue properties of both material states, due to reduction of the fatigue initiation stage. Nevertheless, the fatigue endurance limit of the surface-treated ultra-fine grained material remained higher than the fatigue endurance limit of the coarse-grained material without surface treatment. Reported results confirm better mechanical resistance of ultra-fine grained materials for dental implants in the comparison with coarse-grain one.
Permanent Link: http://hdl.handle.net/11104/0311464