Klinge, Lina ; Kluy, Lukas ; Spiegel, Christopher ; Groche, Peter (2024)
High-strength, low modulus nanostructured Ti 13Nb 13Zr for dental implant application.
15th World Titanium Conference 2023. Edinburgh, Scotland (12.06.2023 -16.06.2023)
doi: 10.7490/f1000research.1119883.1
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
In dentistry, a high strength, low-modulus nanostructured titanium alloy is the key to a successful tooth replacement. High strengths avoid an implant and abutment breakage due to a minimized wear, whereby the abrasion is also diminished. Abrasion, and therefore the release of metal particles, is a critical factor in case conventional titanium alloys such as Ti 6Al 4V (ELI) or Ti 6Al 7Nb are used as these alloys contain critical alloying elements like aluminum (Al) and vanadium (V) which are cytotoxic and might be harmful to the human health; e.g., higher concentrations of Al are associated with dementia, the Alzheimer disease and breast cancer. Therefore, the second-generation beta-rich (alpha+beta)-titanium alloy Ti 13Nb 13Zr (TNZ) is investigated for the use as a dental implant material. In addition to alpha- and beta-phase, in TNZ alloy, the orthorhombic alpha"-martensite phase can form after rapid cooling, i.e., water quenching. The alpha"-martensite phase is very soft and good formable (strength of approx. 630 MPa at an elongation at fracture of 25 ) and possesses a very low Young’s modulus of approx. 60 GPa which in turn leads to a reduced occurrence of stress shielding. As a nanostructured implant surface is important for good osseointegration and further growth of bone cells, whereby a bacterial colonization could be prevented simultaneously, Severe Plastic Deformation (SPD) processes like Equal Channel Angular Swaging (ECAS) are used to allow grain refinement and an increase in strength of TNZ. Additional heat treatments (i.e., recrystallization and ageing) reduce work hardening and due to an alpha"-martensite decomposition (alpha" > alpha+beta), the material becomes nanostructured and is restrengthened again. After heat-treating the nanostructured TNZ alloy, the following properties are obtained: an UTS of 994 MPa, an elongation of 9.6 and a Young’s modulus of 73 GPa which are very promising properties for dental implant applications.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Klinge, Lina ; Kluy, Lukas ; Spiegel, Christopher ; Groche, Peter |
| Art des Eintrags: | Bibliographie |
| Titel: | High-strength, low modulus nanostructured Ti 13Nb 13Zr for dental implant application |
| Sprache: | Englisch |
| Publikationsjahr: | 2024 |
| Ort: | London |
| Verlag: | F1000 Research Ltd. (Taylor & Francis Group) |
| Buchtitel: | Proceedings of the 15th World Conference on Titanium, Chapter 3: Biomedical and Healthcare Applications |
| Kollation: | 6 Seiten |
| Veranstaltungstitel: | 15th World Titanium Conference 2023 |
| Veranstaltungsort: | Edinburgh, Scotland |
| Veranstaltungsdatum: | 12.06.2023 -16.06.2023 |
| DOI: | 10.7490/f1000research.1119883.1 |
| Kurzbeschreibung (Abstract): | In dentistry, a high strength, low-modulus nanostructured titanium alloy is the key to a successful tooth replacement. High strengths avoid an implant and abutment breakage due to a minimized wear, whereby the abrasion is also diminished. Abrasion, and therefore the release of metal particles, is a critical factor in case conventional titanium alloys such as Ti 6Al 4V (ELI) or Ti 6Al 7Nb are used as these alloys contain critical alloying elements like aluminum (Al) and vanadium (V) which are cytotoxic and might be harmful to the human health; e.g., higher concentrations of Al are associated with dementia, the Alzheimer disease and breast cancer. Therefore, the second-generation beta-rich (alpha+beta)-titanium alloy Ti 13Nb 13Zr (TNZ) is investigated for the use as a dental implant material. In addition to alpha- and beta-phase, in TNZ alloy, the orthorhombic alpha"-martensite phase can form after rapid cooling, i.e., water quenching. The alpha"-martensite phase is very soft and good formable (strength of approx. 630 MPa at an elongation at fracture of 25 ) and possesses a very low Young’s modulus of approx. 60 GPa which in turn leads to a reduced occurrence of stress shielding. As a nanostructured implant surface is important for good osseointegration and further growth of bone cells, whereby a bacterial colonization could be prevented simultaneously, Severe Plastic Deformation (SPD) processes like Equal Channel Angular Swaging (ECAS) are used to allow grain refinement and an increase in strength of TNZ. Additional heat treatments (i.e., recrystallization and ageing) reduce work hardening and due to an alpha"-martensite decomposition (alpha" > alpha+beta), the material becomes nanostructured and is restrengthened again. After heat-treating the nanostructured TNZ alloy, the following properties are obtained: an UTS of 994 MPa, an elongation of 9.6 and a Young’s modulus of 73 GPa which are very promising properties for dental implant applications. |
| Freie Schlagworte: | Ti 13Nb 13Zr, TNZ, nanostructured titanium, high strength, low-modulus, equal channel angular swaging (ECAS), severe plastic deformation (SPD), recrystallization, dental implants. |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Institut für Produktionstechnik und Umformmaschinen (PtU) 16 Fachbereich Maschinenbau > Institut für Produktionstechnik und Umformmaschinen (PtU) > Forschungsabteilung Prozessketten und Anlagen |
| Hinterlegungsdatum: | 18 Okt 2024 07:20 |
| Letzte Änderung: | 22 Okt 2024 06:47 |
| PPN: | 522320589 |
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