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CC BY 4.0 · Eur J Dent 2024; 18(03): 815-819
DOI: 10.1055/s-0043-1774327
Original Article

Compressive Strength of Newly Developed Nonsintered Hydroxyapatite Blocks for Bone Graft Applications

Sunarso Sunarso 
1   Departement of Dental Materials Science, Faculty of Dentistry, Universitas Indonesia, Jakarta, Indonesia
,
Abdi Suryadi
2   Department of Dental Materials Science, Faculty of Dentistry, Universitas Indonesia, Jakarta, Indonesia
,
Decky Joesiana Indrani
1   Departement of Dental Materials Science, Faculty of Dentistry, Universitas Indonesia, Jakarta, Indonesia
,
Azizah Intan Pangesty
3   Department of Metallurgical and Materials Engineering, Faculty of Engineering, Universitas Indonesia, UI Campus, Depok, West Java, Indonesia
› Author Affiliations
Funding This research is funded by the Directorate of Research and Development, Universitas Indonesia under Hibah PUTI Q2 2022 (Grant No. NKB-614/UN2.RST/HKP.05.00/2022).
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Abstract

Objective This study aimed to fabricate and evaluate the phase purity and compressive strength of the nonsintered hydroxyapatite (HA) block obtained via phase transformation of set calcium sulfate dihydrate (CSD) block under hydrothermal conditions at different temperatures.

Materials and Methods Nonsintered HA block was prepared by immersion CSD block (4 mm in diameter and 8 mm in height) in a 1 mol/L sodium phosphate (Na3PO4) solution under hydrothermal conditions at 100°C, 140°C, and 180°C for 48 hours. X-ray diffraction was used to determine the crystalline phase of the obtained blocks. The mechanical strength of the blocks was measured using a compressive strength test.

Results The result shows that the CSD block could be fully transformed into a HA block at 180°C for 48 hours without changing its macroscopic shape. The compressive strength of the obtained blocks was lower compared with the CSD block.

Conclusion The current method has successfully produced a nonsintered HA block at 180°C for 48 hours. The compressive strength of the HA block decreased compared with the gypsum block used as a precursor. However, the compressive strength of the HA block that was produced still falls within the range of cancellous bone.

Keywords

nonsintered - hydroxyapatite - block - hydrothermal - compressive strength


Publication History

Article published online:
23 November 2023

© 2023. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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