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Rstakyan V, Mkhitaryan L, Baghdasaryan L, Ghaltaghchyan T, Karabekian Z, Sevoyan G, Aghayan M, Rodríguez MA. Stereolithography of ceramic scaffolds for bone tissue regeneration: Influence of hydroxyapatite/silica ratio on mechanical properties. J Mech Behav Biomed Mater 2024; 152:106421. [PMID: 38280269 DOI: 10.1016/j.jmbbm.2024.106421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/18/2024] [Accepted: 01/23/2024] [Indexed: 01/29/2024]
Abstract
In this paper, the results obtained in the development of ceramic resin feedstock for stereolithography are shown. Hydroxyapatite and silica are used as source of ceramic. Hydroxyapatite is extracted from bovine bone, which enhances bioactivity of ceramic scaffold. The influence of hydroxyapatite amount in polymer-based slurry on the viscosity and printability of feedstock is explored. Hydroxyapatite and silica containing scaffolds are successfully obtained by stereolithography. Influence of hydroxyapatite/silica ratio on the bioactivity, biodegradability and mechanical properties of the scaffolds is also studied. It was observed that higher concentrations of hydroxyapatite led to improved mechanical strength of the scuffolds but increased viscosity of the slurry, affecting printability. Cell viability assays and cell visualization experiments indicated that the scaffolds not cause significant cell toxicity.
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Affiliation(s)
- Viktorya Rstakyan
- A.B. Nalbandyan Institute of Chemical Physics, National Academy of Sciences of the Republic of Armenia, P. Sevak 5/2, Yerevan, 0014, Armenia.
| | - Liana Mkhitaryan
- A.B. Nalbandyan Institute of Chemical Physics, National Academy of Sciences of the Republic of Armenia, P. Sevak 5/2, Yerevan, 0014, Armenia
| | - Lilit Baghdasaryan
- A.B. Nalbandyan Institute of Chemical Physics, National Academy of Sciences of the Republic of Armenia, P. Sevak 5/2, Yerevan, 0014, Armenia
| | - Tsovinar Ghaltaghchyan
- A.B. Nalbandyan Institute of Chemical Physics, National Academy of Sciences of the Republic of Armenia, P. Sevak 5/2, Yerevan, 0014, Armenia
| | - Zaruhi Karabekian
- Orbeli Institute of Physiology, National Academy of Sciences of the Republic of Armenia, Orbeli Bros. 22, Yerevan, 0028, Armenia
| | - Gohar Sevoyan
- Orbeli Institute of Physiology, National Academy of Sciences of the Republic of Armenia, Orbeli Bros. 22, Yerevan, 0028, Armenia
| | - Marina Aghayan
- A.B. Nalbandyan Institute of Chemical Physics, National Academy of Sciences of the Republic of Armenia, P. Sevak 5/2, Yerevan, 0014, Armenia; FACT Industries, Õismäe tee 124, 13513, Tallinn, Estonia
| | - Miguel A Rodríguez
- Instituto de Cerámica y Vidrio (CSIC), C/ Kelsen 5, 28904, Madrid, Spain
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