Safronova TV, Selezneva II, Tikhonova SA, Kiselev AS, Davydova GA, Shatalova TB, Larionov DS, Rau JV. Biocompatibility of biphasic α,β-tricalcium phosphate ceramics
in vitro.
Bioact Mater 2020;
5:423-427. [PMID:
32258831 PMCID:
PMC7118277 DOI:
10.1016/j.bioactmat.2020.03.007]
[Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 03/04/2020] [Accepted: 03/11/2020] [Indexed: 01/08/2023] Open
Abstract
The biocompatibility of biphasic α,β-tricalcium phosphate ceramics, obtained by annealing a compact preform based on β-tricalcium phosphate powder, was studied in vitro. It was found that within 10–30 days the adhesion of primary dental pulp stem cells located on the surface of biphasic α,β-tricalcium phosphate ceramics is suppressed. Decrease of the cell number on the surface of biphasic α,β-tricalcium phosphate ceramics, most likely, can be associated with both the pH level (acidic) as a result of hydrolysis of the more soluble phase of α-tricalcium phosphate and with the nature of surface that changes as a result of the formation and growth of hydroxyapatite crystals.
In vitro tests of biphasic α,β-tricalcium phosphate ceramics enriched with 65% of α-Ca3(PO4)2 modification were carried out.
Surface morphology of α,β-tricalcium phosphate ceramics gradually changed during in vitro tests for 30 days.
Sharp edges of hydroxyapatite plate crystallites formed at the surface of ceramics suppressed the cell activity.
Acidification near the surface of ceramics containing biodegradable α-tricalcium phosphate suppressed the cell activity.
Acidifying α-tricalcium phosphate is a perspective phase of ceramic composites in combination with alkalinizing phases.
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