The Effect of Bioactive Glass and Sintering Conditions on the Properties of Titanium-Hydroxyapatite Composites

Abdulmunem, Mohamed and Kutty, Muralithran Govindan and Abd Majid, Wan Haliza and Dabbagh, Ali and Abu Kasim, Noor Hayaty and Yahya, Noor Azlin and Abdullah, Hadijah (2021) The Effect of Bioactive Glass and Sintering Conditions on the Properties of Titanium-Hydroxyapatite Composites. Sains Malaysiana, 50 (4). pp. 1089-1099. ISSN 0126-6039

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Official URL: https://doi.org/10.17576/jsm-2021-5004-19

Abstract

Titanium-hydroxyapatite (Ti-HA) based composites have been widely investigated as viable materials to be used in dentistry. However, sintering of these composites is very challenging due to decomposition of HA and oxidation of Ti. The objective of this study was to investigate the effect of incorporating a bioactive glass in Ti-HA composites sintered in different atmospheric conditions. The bioactive glass was prepared and added to different percentages of Ti-HA mixtures and divided into two groups. Samples in Group 1 were sintered with air atmosphere, while samples in Group 2 were sintered with vacuum furnace. All samples were later subjected to XRD, SEM, density, micro-hardness, and compression strength tests. XRD results showed that in Group 1, the major phases were assigned to Ti and HA while the minor phases were assigned to oxidised Ti. Whereas, Group 2 showed that the major phases were assigned to HA and the minor phases showed decomposition of HA to Ca3(PO4)2 (TCP) and Ca4(PO4)2O (TTCP). Oxidized Ti was also present in this group. In terms of density, micro-hardness and compression strength, statistical analyses showed that samples in Group 1 have a significant difference (p = 0.000) as compared to those in Group 2. Sintering Ti-HA composites incorporated with BG by using air atmosphere furnace could reduce the decomposition of HA and oxidation of Ti, thus improve the density, micro-hardness and compression strength of the composites. © 2021 Penerbit Universiti Kebangsaan Malaysia. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Bioactive glass; Composites; Compression strength; Hydroxyapatite; Sintering process; Titanium
Subjects: Q Science > QC Physics
R Medicine > RK Dentistry
Divisions: Faculty of Dentistry
Faculty of Science > Dept of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 26 Jul 2021 09:16
Last Modified: 26 Jul 2021 09:16
URI: http://eprints.um.edu.my/id/eprint/25996

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