Title: Effect of carbon fibre layer with alumina and tri calcium phosphate on mechanical properties of denture base

Authors: Wafaa A. Hussain; Selma M.H. Al-Jawad; Samar Abbas Hannon

Addresses: Applied Sciences Department, University of Technology, Baghdad, 10001, Iraq ' Applied Sciences Department, University of Technology, Baghdad, 10001, Iraq ' Applied Sciences Department, University of Technology, Baghdad, 10001, Iraq

Abstract: In this study unreinforced and reinforced samples with uncoated and coated woven carbon fibres (WCF) with alumina (Al₂O₃) and tri calcium phosphate (TCP) powders were incorporated into heat polymerised polymethyl methacrylate (PMMA) denture base resin in addition to poly vinyl alcohol (PVA) with 0.02 and 0.09 weight fraction (wi). Impact, flexural strength and water absorption of layered denture base resin have been studied. Surface morphology of the coating layers has been examined by field emission-scanning electron microscope (FE-SEM) and the toxicity of reinforcing materials were also investigated in human blood cells. Uncoated WCF sample showed high impact and flexural strength, but it still exhibits poor aesthetic. A significant increase of the impact strength values was observed in the coated specimens, in expense of flexural strength. The effect of TCP on PMMA resin was higher than when using alumina particles. Aesthetic, impact and flexural strength have improved together when PVA increased.

Keywords: denture base material; PMMA; polymethyl methacrylate; coated carbon fibre; impact strength; flexural strength; toxicity; alumina powder; tri calcium phosphate powder; hybrid composite; aesthetic.

DOI: 10.1504/IJNBM.2021.114691

International Journal of Nano and Biomaterials, 2021 Vol.10 No.1, pp.22 - 33

Received: 16 Jan 2020
Accepted: 28 Nov 2020
Published online: 30 Apr 2021 *

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