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Master's Thesis
Author of thesis: Bc. Vendula Korábová
Acad. year: 2025/2026
Supervisor: prof. Ing. Klára Částková, Ph.D.
Reviewer: doc. Ing. Daniel Drdlík, Ph.D.
This thesis focuses on the preparation of multi-material bioceramic structures based on hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP) using the DLP 3D printing method for potential use in bone tissue engineering. The main objective was to optimize the composition of the suspensions and the printing parameters, taking into account the different shrinkage rates of the two materials during sintering. HA and β-TCP suspensions with varying ceramic filler contents were prepared, and their rheology, printability, and sintering behavior were evaluated. The results showed a significant influence of solid-phase content on the viscosity, density, and shrinkage of the sintered bodies. β-TCP exhibited higher shrinkage and lower final density than HA, which led to the formation of stress, deformation, and local delamination of the interfaces in layered structures. By optimizing the composition of the β-TCP suspensions, it was possible to partially reduce the differences in shrinkage and improve the quality of the interfaces between individual layers. Gyroid structures exhibited higher structural integrity than dense layered structures. In addition to layered structures, HA/β-TCP particle composites were also prepared, which exhibited better cohesion after sintering due to a more homogeneous stress distribution within the material volume. The results of this work confirm the potential of multi-material DLP printing for the preparation of bioceramic scaffolds with complex structures and properties.
Bioceramics; calcium phosphates; bone implants; multi-material structures, DLP printing
Date of defence
09.06.2026
Result of the defence
Defended (thesis was successfully defended)
Grading
A
Process of defence
Studentka prezentovala svoji diplomovou práci, byly přečteny posudky vedoucího práce a oponenta práce. Otázky oponenta: 1. otázka - zodpovězeno 2. otázka - zodpovězeno 3. otázka - zodpovězeno Otázky komise: Chceme - -li vidět mikrodefekt v mCT - má to nějaké omezení? (částečně zodpovězeno) Jaké experimenty je nutné provést, abyste mohli tento implantát do lidského těla? (zodpovězeno) Lze vytvořit tuto strukturu i jinou metodou, místo 3D tisku? (zodpovězeno) Jaký je rychlost zarůstání tkáně do této struktury? (zodpovězeno) Čím je ovlivněna rychlost prorůstání? (zodpovězeno)
Language of thesis
Czech
Faculty
Fakulta strojního inženýrství
Department
Institute of Materials Science and Engineering
Study programme
Materials Engineering (N-MTI-P)
Composition of Committee
prof. Ing. Libor Pantělejev, Ph.D. (předseda) prof. Ing. Ivo Dlouhý, CSc. (místopředseda) Ing. Lukáš Řehořek, Ph.D. (člen) prof. Ing. Klára Částková, Ph.D. (člen) Ing. Martin Zelený, Ph.D. (člen)
Supervisor’s reportprof. Ing. Klára Částková, Ph.D.
Grade proposed by supervisor: A
Reviewer’s reportdoc. Ing. Daniel Drdlík, Ph.D.
Grade proposed by reviewer: A
Responsibility: Mgr. et Mgr. Hana Odstrčilová