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Erschienen in: Lasers in Medical Science 1/2023

01.12.2023 | Original Article

Fatigue behavior of zirconia with microgrooved surfaces produced using femtosecond laser

verfasst von: Wenjin Li, Qian Ding, Fengbo Sun, Binchao Liu, Fusong Yuan, Lei Zhang, Rui Bao, Jinghua Gu, Yuanhua Lin

Erschienen in: Lasers in Medical Science | Ausgabe 1/2023

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Abstract

Femtosecond laser is a promising surface treatment tool for zirconia implant. In this study, the fatigue behavior of zirconia specimens with microgrooved surfaces formed by femtosecond laser is reported. One hundred sixty CAD/CAM zirconia bars (20 mm × 4 mm × 1.4 mm) were evenly divided into four groups with different surface: as sintered; sandblasted with 110 μm Al2O3; femtosecond laser produced microgrooves having 50 μm width, 30 μm depth, and 100 μm pitch; microgrooves having 30 μm width, 20 μm depth, and 60 μm pitch. The femtosecond laser formed micro/nanostructured microgrooves with precise size on zirconia surfaces. XRD analysis indicated that microgrooved surface showed no obvious tetragonal-to-monoclinic phase transformation. The fatigue strength of sandblasted specimens (728 MPa) was significantly higher than that of as sintered specimens (570 MPa). However, the fatigue strength of specimens with microgrooved surface decreased to about 360–380 MPa. The results suggest femtosecond laser is an effective technique to regulate the surface microtopography of zirconia, while further investigations are needed to improve its fatigue behavior.
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Metadaten
Titel
Fatigue behavior of zirconia with microgrooved surfaces produced using femtosecond laser
verfasst von
Wenjin Li
Qian Ding
Fengbo Sun
Binchao Liu
Fusong Yuan
Lei Zhang
Rui Bao
Jinghua Gu
Yuanhua Lin
Publikationsdatum
01.12.2023
Verlag
Springer London
Erschienen in
Lasers in Medical Science / Ausgabe 1/2023
Print ISSN: 0268-8921
Elektronische ISSN: 1435-604X
DOI
https://doi.org/10.1007/s10103-022-03679-w

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