PD Dr. Katrin Hurle
PD Dr. Katrin Hurle
Research Topics
- Quantitative X-ray diffraction (QXRD) by Rietveld refinement combined with the G-factor method, including models for the refinement of anisotropic crystallite sizes
- Investigation of hydration reactions by in-situ QXRD, isothermal calorimetry and 1H-NMR
- Hydration kinetics of partially amorphized calcium and magnesium phosphate cements
- Effect of ionic dopants and organic additives like phytic acid or polymers on the hydration of calcium phosphate and calcium carbonate cements
- Investigation of pre-fabricated cement pastes
- QXRD characterization of lithium silicate glass ceramics for dental application
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3D printing of Li-Brushite/silk fibroin nanocomposites for bone regeneration.
(Third Party Funds Single)
Term: 1. April 2022 - 31. March 2024
Funding source: Deutscher Akademischer Austauschdienst (DAAD)Bone defects resulting from trauma, tumor removal or bone infections represent a major social challenge, exacerbated by the increasing proportion of elderly patients due to steadily rising life expectancy. The most effective treatment of such bone defects to improve the quality of life of those affected is therefore of high relevance. Despite the impressive progress in the development of synthetic materials for bone regeneration, some clinical problems still remain unsolved. Therefore, the aim of the proposed research project is the development of 3D-printed nanocomposites consisting of brushite cement and silk fibroin (SF), which show high potential to fulfill the structural and biological requirements of human bone and thus to regenerate bone.
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Wechselwirkungsmechanismen von medizinischen Wirkstoffen mit Calciumphosphatzementen für die Anwendung als pharmakologisch aktiver Knochenersatzstoff
(Third Party Funds Single)
Term: since 1. July 2022
Funding source: DFG-Einzelförderung / Sachbeihilfe (EIN-SBH)
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Development of SiO2 – Li2O – P2O5 – ZrO2 dental glass-ceramic systems with extended lifetimes: crystallization mechanisms and resistance to subcritical crack growth
(Third Party Funds Group – Sub project)
Overall project: Dental glass-ceramic in the system SiO2 – Li2O – P2O5 – ZrO2
Term: since 1. October 2021
Funding source: Deutsche Forschungsgemeinschaft (DFG)Classes of materials that resemble natural teeth, such as polycrystalline ceramics, glass-ceramics and ceramic-methacrylate composites, have been preferred for tooth replacement for some time.
The first commercial product was based on a non-stoichiometric multi-component SiO2-Li2O-Al2O3-K2O-P2O5-ZrO2-ZnO system that was pre-crystallised, then melted and injected into a mould made of refractory material. The resulting glass-ceramics reached a degree of crystallisation of ~70 vol% with elongated Li2Si2O5 crystallites exhibiting very good mechanical properties.
The research approach makes it possible to determine relationships between the mechanical properties, composition and microstructure, either in the glass-ceramic or in the residual glass.
For this purpose, the influence of the SiO2/Li2O molar ratio on the crystallisation behaviour of Li2SiO3 and Li2Si2O5 phases is analysed and the effect of ZrO2 addition at constant SiO2/Li2O ratio on crystallisation kinetics and network structure of the residual glass is investigated.
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Crystallographic analysis of Cu2+ doped β-tricalcium phosphate by Rietveld refinement and influence on the hydration kinetics
(Own Funds)
Term: 1. January 2019 - 31. December 2021
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Enzymatisch aktiviertes Abbinden dotierter Calciumphosphatzemente
(Third Party Funds Single)
Term: 1. January 2018 - 31. December 2019
Funding source: Deutscher Akademischer Austauschdienst (DAAD)
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Mechanistische Analyse von Mineralisationsvorgängen in modifizierten anorganischen Knochenzementen mit enzymatischer Kontrolle der Abbindereaktion
(Third Party Funds Single)
Term: 1. March 2017 - 31. May 2020
Funding source: DFG-Einzelförderung / Sachbeihilfe (EIN-SBH)Bei der medizinischen Anwendung von Calciumphosphatzementen(CPCs) werden zunehmend minimal-invasive Eingriffe angestrebt, beidenen der Zement direkt in den Defekt injiziert wird. Problematisch istdabei oftmals die Phasenseparation von fester und flüssigerZementphase (filter-pressing). Das beantragte Forschungsprojektbefasst sich daher im ersten Teil mit der Modifizierung der Rheologieund damit der Injizierbarkeit von CPCs durch oberflächenladungstransferierende Additive. Ein bruschit- sowie ein apatitbildender CPCwerden jeweils zur Einstellung einer geeigneten Rheologie mitPhytinsäure (IP6) bzw. Na-Phytat modifiziert. Die Chelatreaktion desIP6 mit Ca2+-Ionen aus der Zementlösung lässt zudem eineVerbesserung der mechanischen Eigenschaften der Zementeerwarten. Die Aushärtereaktion der Zemente wird mechanistischmittels Wärmeflusskalorimetrie, zeitaufgelöster XRD, in-situ 1H-NMR,FTIR bzw. RAMAN-Spektroskopie sowie zeitaufgelöstenFestigkeitsprüfungen untersucht, um ein detailliertes Verständnis desAushärtemechanismus mit IP6 als Additiv zu erzielen. In einemzweiten Projektansatz werden wasserbasierte, präfabrizierteZementpasten realisiert, deren Abbindereaktion durch das EnzymPyrophosphatase initiiert wird. Diese sind aufgrund ihrer einfachenklinischen Anwendbarkeit von hoher praktischer Relevanz. AlsModellsystem wird zunächst eine Suspension von alphaTricalciumphosphat in Wasser mit Pyrophosphationen als Inhibitor derHydratation untersucht. Die Hydratation wird dann durch Zugabe vonPyrophosphatase kontrolliert eingeleitet, wobei die inhibierenden Pyrophosphat- zu abbindebeschleunigenden Orthophosphationengespalteten werden. Auf Grundlage der daraus erzielten Ergebnissewird anschließend ein Struvit-bildender Magnesiumphosphat-Zementmit Zusatz von Seidenfibroin zur Zementflüssigkeit untersucht. DasSeidenfibroin sorgt durch seine Gelierung für außergewöhnlicheMaterialeigenschaften, die Injektion solcher Zementformulierungenwird jedoch durch die sehr schnelle Gelierung des Fibroins verhindert.Im vorliegenden Projekt wird daher als alternative Formulierung einewässrige Suspension von Mg3(PO4)2 mit gelöstemAmmoniumpyrophosphat und Seidenfibroin untersucht. Durch Zugabevon Pyrophosphatase soll ebenfalls Orthophosphat produziertwerden, welches die Bildung von Struvit sowie die Gelierung desSeidenfibroins kontrolliert einleiten soll. Abschließend ist diebiologische Charakterisierung der in dieser Studie entwickeltenZementkomposite durch in vitro Versuche mit osteoblastären undosteoklastären Zelllinien vorgesehen, um die Zytokompatibilität derKomposite und deren grundsätzliche Eignung für die medizinischeAnwendung sicherzustellen. Die im Projekt gewonnenen Erkenntnissesollen das Verständnis der Abbindereaktion von mineralischenKnochenzementen derart erweitern, dass zukünftig Eigenschaften wiedie Rheologie der Pasten sowie ein durch den Anwender stimuliertesAbbindeverhalten gezielter einstellbar sind.
Publications
2024
Effects of silicon nitride (Si3N4) incorporation on physicochemical, bioactivity and antibacterial properties of 45S5 bioactive glass
In: Ceramics International 50 (2024), p. 50200-50212
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2024.09.367 , , , , , :
Ultrafast and Reproducible Synthesis of Tailor-Made Octacalcium Phosphate
In: ACS Omega (2024)
ISSN: 2470-1343
DOI: 10.1021/acsomega.4c01436 , , , , , , :
Glass science behind lithium silicate glass-ceramics
In: Dental Materials (2024)
ISSN: 0109-5641
DOI: 10.1016/j.dental.2024.03.006 , , , , , , , , :
Customizable Induction Heating Profiles: from Tailored Colloidally Stable Nanoparticles Toward Multi-Stage Heatable Supraparticles
In: Advanced Functional Materials (2024), Article No.: 2412296
ISSN: 1616-301X
DOI: 10.1002/adfm.202412296
URL: https://onlinelibrary.wiley.com/doi/10.1002/adfm.202412296 , , , , :
Fatigue strength of bilayer yttria-stabilized zirconia after low-temperature degradation
In: Journal of the Mechanical Behavior of Biomedical Materials 160 (2024), Article No.: 106725
ISSN: 1751-6161
DOI: 10.1016/j.jmbbm.2024.106725 , , , , , :
New Insights Into Application Relevant Properties of Cu2+-Doped Brushite Cements
In: Journal of Biomedical Materials Research Part B: Applied Biomaterials 112 (2024), Article No.: e35479
ISSN: 1552-4973
DOI: 10.1002/jbm.b.35479 , , , , , , :
Magnetic Supraparticles Capable of Recording High‐Temperature Events
In: Advanced Functional Materials (2024)
ISSN: 1616-301X
DOI: 10.1002/adfm.202316212 , , , , :
2023
Structural and geochemical assessment of the coralline alga Tethysphytum antarcticum from Terra Nova Bay, Ross Sea, Antarctica
In: Minerals 13 (2023)
ISSN: 2075-163X
DOI: 10.3390/min13020215 , , , , , , , , , :
The effect of Cu2+ doping in β-tricalcium phosphate on the hydration mechanism of a brushite cement
In: Materials Today Chemistry 27 (2023), Article No.: 101288
ISSN: 2468-5194
DOI: 10.1016/j.mtchem.2022.101288 , , :
Aqueous Calcium Phosphate Cement Inks for 3D Printing
In: Advanced Engineering Materials (2023)
ISSN: 1438-1656
DOI: 10.1002/adem.202300789 , , , , :
2022
Scavenging of bacteria or bacterial products by magnetic particles functionalized with a broad-spectrum pathogen recognition receptor motif offers diagnostic and therapeutic applications
In: Acta Biomaterialia 141 (2022), p. 418-428
ISSN: 1742-7061
DOI: 10.1016/j.actbio.2022.01.001 , , , , , , , , , , , , , , , , , , , :
On the assignment of quartz-like LiAlSi2O6 - SiO2 solid solutions in dental lithium silicate glass-ceramics: Virgilite, high quartz, low quartz or stuffed quartz derivatives?
In: Dental Materials (2022)
ISSN: 0109-5641
DOI: 10.1016/j.dental.2022.07.009 , , , :
Osteogenic lithium-doped brushite cements for bone regeneration
In: Bioactive Materials (2022)
ISSN: 2452-199X
DOI: 10.1016/j.bioactmat.2021.12.025 , , , , , , :
CONTROLLED ACTIVATION OF PREFABRICATED A-TRICALCIUM PHOSPHATE CEMENT PASTES STABILIZED BY SODIUM PYROPHOSPHATE
In: TISSUE ENGINEERING PART A, NEW ROCHELLE: 2022 , , , :
Grasping the Lithium hype: Insights into modern dental Lithium Silicate glass-ceramics
In: Dental Materials 38 (2022), p. 318-332
ISSN: 0109-5641
DOI: 10.1016/j.dental.2021.12.013 , , , , :
Erratum: Progressive changes in crystallographic textures of biominerals generate functionally graded ceramics (Mater. Adv. (2022) DOI: 10.1039/d1ma01031j)
In: Materials Advances 3 (2022), p. 2598-
ISSN: 2633-5409
DOI: 10.1039/d2ma90020c , , , , , , , , , , , , :
Pyrophosphate ions inhibit calcium phosphate cement reaction and enable storage of premixed pastes with a controlled activation by orthophosphate addition
In: Ceramics International 48 (2022), p. 15390-15404
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2022.02.073 , , , :
2021
Relationships between fracture toughness, Y2O3 fraction and phases content in modern dental Yttria-doped zirconias
In: Journal of the European Ceramic Society 41 (2021), p. 7771-7782
ISSN: 0955-2219
DOI: 10.1016/j.jeurceramsoc.2021.08.003 , , , , , , , , :
Deepening our understanding of bioactive glass crystallization using TEM and 3D nano-CT
In: Journal of the European Ceramic Society (2021)
ISSN: 0955-2219
DOI: 10.1016/j.jeurceramsoc.2021.02.051 , , , , , , , :
Ion-doped Brushite Cements for Bone Regeneration
In: Acta Biomaterialia (2021)
ISSN: 1742-7061
DOI: 10.1016/j.actbio.2021.01.004 , , , , :
Concurrent kinetics of crystallization and toughening in multicomponent biomedical SiO2-Li2O-P2O5-ZrO2 glass-ceramics
In: Journal of Non-Crystalline Solids 554 (2021), Article No.: 120607
ISSN: 0022-3093
DOI: 10.1016/j.jnoncrysol.2020.120607 , , , , , :
Toughening by revitrification of Li2SiO3 crystals in Obsidian® dental glass-ceramic
In: Journal of the Mechanical Behavior of Biomedical Materials 124 (2021), Article No.: 104739
ISSN: 1751-6161
DOI: 10.1016/j.jmbbm.2021.104739 , , , , , , :
Synthesis, characterization, antibacterial properties, and in vitro studies of selenium and strontium co-substituted hydroxyapatite
In: International Journal of Molecular Sciences 22 (2021), Article No.: 4246
ISSN: 1422-0067
DOI: 10.3390/ijms22084246 , , , , , , , , , :
Mapping the elemental and crystalline phase distribution in Cu2+ doped 45S5 bioactive glass upon crystallization
In: CrystEngComm (2021)
ISSN: 1466-8033
DOI: 10.1039/d1ce01160j , , , , , :
Progressive changes in crystallographic textures of biominerals generate functionally graded ceramics
In: Materials Advances (2021)
ISSN: 2633-5409
DOI: 10.1039/d1ma01031j , , , , , , , , , , , , :
2020
Crack growth rates in lithium disilicates with bulk (mis)alignment of the Li2Si2O5 phase in the [001] direction
In: Journal of Non-Crystalline Solids 532 (2020), Article No.: 119877
ISSN: 0022-3093
DOI: 10.1016/j.jnoncrysol.2019.119877 , , , , , :
Shape Matters: Crystal Morphology and Surface Topography Alter Bioactivity of Bioceramics in Simulated Body Fluid
In: Advanced Engineering Materials (2020)
ISSN: 1438-1656
DOI: 10.1002/adem.202000044 , , , , , , , , , , :
Crystallization study of sol–gel derived 13-93 bioactive glass powder
In: Journal of the European Ceramic Society (2020)
ISSN: 0955-2219
DOI: 10.1016/j.jeurceramsoc.2020.09.052 , , , , , , , , :
New insights into the crystallization process of sol-gel–derived 45S5 bioactive glass
In: Journal of the American Ceramic Society (2020)
ISSN: 1551-2916
DOI: 10.1111/jace.17124 , , , , , , :
Cu2+ doped β-tricalcium phosphate: Solid solution limit and crystallographic characterization by rietveld refinement
In: Journal of Solid State Chemistry 285 (2020), Article No.: 121225
ISSN: 0022-4596
DOI: 10.1016/j.jssc.2020.121225 , , :
2019
Crack-healing during two-stage crystallization of biomedical lithium (di)silicate glass-ceramics
In: Dental Materials (2019)
ISSN: 0109-5641
DOI: 10.1016/j.dental.2019.05.013 , , , :
Phase characterization of lithium silicate biomedical glass-ceramics produced by two-stage crystallization
In: Journal of Non-Crystalline Solids 510 (2019), p. 42-50
ISSN: 0022-3093
DOI: 10.1016/j.jnoncrysol.2019.01.027 , , , :
Effect of sintering parameters on phase evolution and strength of dental lithium silicate glass-ceramics
In: Dental Materials (2019)
ISSN: 0109-5641
DOI: 10.1016/j.dental.2019.07.002 , , , , :
Mechanical improvement of calcium carbonate cements by: In situ HEMA polymerization during hardening
In: Journal of Materials Chemistry B 7 (2019), p. 3403-3411
ISSN: 2050-750X
DOI: 10.1039/c9tb00237e , , , , :
Phase-specific bioactivity and altered Ostwald ripening pathways of calcium carbonate polymorphs in simulated body fluid
In: RSC Advances 9 (2019), p. 18232-18244
ISSN: 2046-2069
DOI: 10.1039/c9ra01473j , , , , , , :
Setting mechanism of a CDHA forming α-TCP cement modified with sodium phytate for improved injectability
In: Materials 12 (2019), Article No.: 2098
ISSN: 1996-1944
DOI: 10.3390/ma12132098 , , , :
2018
Hydration mechanism of a calcium phosphate cement modified with phytic acid
In: Acta Biomaterialia 80 (2018), p. 378-389
ISSN: 1742-7061
DOI: 10.1016/j.actbio.2018.09.002 , , , , , :
2017
Hydration enthalpy of amorphous tricalcium phosphate resulting from partially amorphization of β-tricalcium phosphate
In: BioNanoMaterials 18 (2017), p. 429-440
ISSN: 2193-066X
DOI: 10.1515/bnm-2016-0016 , , :
Hydration mechanism of partially amorphized β-tricalcium phosphate
In: Acta Biomaterialia 54 (2017), p. 429-440
ISSN: 1742-7061
DOI: 10.1016/j.actbio.2017.03.013 , , :
Fly-ash-based geopolymers: How the addition of recycled glass or red mud waste influences the structural and mechanical properties
In: Journal of Ceramic Science and Technology 8 (2017), p. 411-419
ISSN: 2190-9385
DOI: 10.4416/JCST2017-00053 , , , , , , :
2016
Reaction kinetics of dual setting α-tricalcium phosphate cements
In: Journal of Materials Science: Materials in Medicine 27 (2016), p. 1-13
ISSN: 0957-4530
DOI: 10.1007/s10856-015-5616-y , , , , , :
2015
Calorimetry investigations of milled alpha-tricalcium phosphate (alpha-TCP) powders to determine the formation enthalpies of alpha-TCP and X-ray amorphous tricalcium phosphate
In: Acta Biomaterialia 2015 (2015)
ISSN: 1742-7061
DOI: 10.1016/j.actbio.2015.05.026 , , , , , :
Influence of Sr2+ on Calcium-Deficient Hydroxyapatite Formation Kinetics and Morphology in Partially Amorphized α-TCP
In: Journal of the American Ceramic Society 99 (2015), p. 1055-1063
ISSN: 1551-2916
DOI: 10.1111/jace.14005 , , :
2014
Effect of amorphous phases during the hydraulic conversion of alpha-TCP into calcium-deficient hydroxyapatite
In: Acta Biomaterialia 10 (2014), p. 3931-3941
ISSN: 1742-7061
DOI: 10.1016/j.actbio.2014.03.017 , , , , :