Preparation and characterisation of resin-based dental composites using natural hydroxyapatite and silica fillers

Dental resin-based composites (RBCs) have been widely used in dental treatmentbecause of their excellent characteristics such as aesthetic, mechanical andbiocompatibility properties. The aims of this study were to prepare and characterise theresin-based dental composite using natural hydroxyapatite...

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Main Author:	Rafiq Akram Che Razali
Format:	thesis
Language:	eng
Published:	2021
Subjects:	RK Dentistry
Online Access:	https://ir.upsi.edu.my/detailsg.php?det=6842
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institution	Universiti Pendidikan Sultan Idris
collection	UPSI Digital Repository
language	eng
topic	RK Dentistry
spellingShingle	RK Dentistry Rafiq Akram Che Razali Preparation and characterisation of resin-based dental composites using natural hydroxyapatite and silica fillers
description	Dental resin-based composites (RBCs) have been widely used in dental treatmentbecause of their excellent characteristics such as aesthetic, mechanical andbiocompatibility properties. The aims of this study were to prepare and characterise theresin-based dental composite using natural hydroxyapatite (NHA) and silica fillers. Theeffect of different compositions of these materials on the properties of dental resin composite was investigated. RBC was prepared by varying the composition of silica(0, 5, 15, 20 wt%) in the filler mixture of NHA and silica. The ratio between fillers and organicresins was fixed at 70:30 wt%. Two different ratios of organic resins of bisphenol A glycidylmethacrylate (BisGMA)/triethylene glycol dimethacrylate (TEGDMA)/hydroxyethyl methacrylate (HEMA) were used i.e. 50:25:25 wt% (CB50) and 25:50:25 wt% (CT50). The composites wereinserted into the mould and cross-linked using visible light for 60 seconds on bothsides. The degree of conversion, flexural and compressive strength, surface roughness, Vickershardness, water sorption of composites, and cytotoxicity test were evaluated andcompared. The surface morphology and distribution of the dental composites were also observed and examined by field emission scanning electron microscope (FESEM). Thedata were analysed using one-way ANOVA and the Tukeys post hoc test at the significance level of0.05. The results indicated that the CB50 with 15 wt% silica in filler mixture exhibitedsatisfactory mechanical and physical properties compared to CT50 with the value offlexural strength (42.74 MPa), compressive strength (174.28 MPa), surface roughness (43.0 nm),Vickers hardness (43.7 HV) and water sorption (34.84 g/mm). Cytotoxicity test demonstratedno toxic effects released from the composites. In conclusion, this result has compliedwith the standard requirement of dental composite. The implication, combination of NHA andsilica is promising as reinforcing filler for dental resin composite application.
format	thesis
qualification_name
qualification_level	Master's degree
author	Rafiq Akram Che Razali
author_facet	Rafiq Akram Che Razali
author_sort	Rafiq Akram Che Razali
title	Preparation and characterisation of resin-based dental composites using natural hydroxyapatite and silica fillers
title_short	Preparation and characterisation of resin-based dental composites using natural hydroxyapatite and silica fillers
title_full	Preparation and characterisation of resin-based dental composites using natural hydroxyapatite and silica fillers
title_fullStr	Preparation and characterisation of resin-based dental composites using natural hydroxyapatite and silica fillers
title_full_unstemmed	Preparation and characterisation of resin-based dental composites using natural hydroxyapatite and silica fillers
title_sort	preparation and characterisation of resin-based dental composites using natural hydroxyapatite and silica fillers
granting_institution	Universiti Pendidikan Sultan Idris
granting_department	Fakulti Sains dan Matematik
publishDate	2021
url	https://ir.upsi.edu.my/detailsg.php?det=6842
_version_	1747833319848935424
spelling	oai:ir.upsi.edu.my:68422022-03-03 Preparation and characterisation of resin-based dental composites using natural hydroxyapatite and silica fillers 2021 Rafiq Akram Che Razali RK Dentistry Dental resin-based composites (RBCs) have been widely used in dental treatmentbecause of their excellent characteristics such as aesthetic, mechanical andbiocompatibility properties. The aims of this study were to prepare and characterise theresin-based dental composite using natural hydroxyapatite (NHA) and silica fillers. Theeffect of different compositions of these materials on the properties of dental resin composite was investigated. RBC was prepared by varying the composition of silica(0, 5, 15, 20 wt%) in the filler mixture of NHA and silica. The ratio between fillers and organicresins was fixed at 70:30 wt%. Two different ratios of organic resins of bisphenol A glycidylmethacrylate (BisGMA)/triethylene glycol dimethacrylate (TEGDMA)/hydroxyethyl methacrylate (HEMA) were used i.e. 50:25:25 wt% (CB50) and 25:50:25 wt% (CT50). The composites wereinserted into the mould and cross-linked using visible light for 60 seconds on bothsides. The degree of conversion, flexural and compressive strength, surface roughness, Vickershardness, water sorption of composites, and cytotoxicity test were evaluated andcompared. The surface morphology and distribution of the dental composites were also observed and examined by field emission scanning electron microscope (FESEM). Thedata were analysed using one-way ANOVA and the Tukeys post hoc test at the significance level of0.05. The results indicated that the CB50 with 15 wt% silica in filler mixture exhibitedsatisfactory mechanical and physical properties compared to CT50 with the value offlexural strength (42.74 MPa), compressive strength (174.28 MPa), surface roughness (43.0 nm),Vickers hardness (43.7 HV) and water sorption (34.84 g/mm). Cytotoxicity test demonstratedno toxic effects released from the composites. In conclusion, this result has compliedwith the standard requirement of dental composite. The implication, combination of NHA andsilica is promising as reinforcing filler for dental resin composite application. 2021 thesis https://ir.upsi.edu.my/detailsg.php?det=6842 https://ir.upsi.edu.my/detailsg.php?det=6842 text eng closedAccess Masters Universiti Pendidikan Sultan Idris Fakulti Sains dan Matematik Abdulrahman, I., Tijani, H. I., Mohammed, B. A., Saidu, H., Yusuf, H., Jibrin, M. N.,& Mohammed, S. (2014). 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W. (2012). Failure and behavior in water of hydroxyapatitewhisker-reinforced bis-GMA-based resin composites. Journal of the Mechanical Behavior of BiomedicalMaterials, 10, 39-47.Zhang, H., & Darvell, B. W. (2012). Mechanical properties of hydroxyapatitewhisker-reinforced bis-GMA-based resin composites. Dental Materials, 28(8), 824-830.Zhang, H., & Zhang, M. (2010). Effect of surface treatment of hydroxyapatite whiskers on the mechanical properties of bis-GMA-based composites. Biomedical Materials,5(5), 054106.Zhou, W. R., & Zheng, Y. F. (2015). Characterization of modified magnesium and magnesium alloys for biomedical applications. Surface Modification of Magnesium and its Alloysfor Biomedical Applications, 263-282.Zulkifli, N. S. C., Rahman, I. A., Mohamad, D., & Husein, A. (2013). A green sol-gel route for thesynthesis of structurally controlled silica particles from rice husk fordental composite filler. Ceramics International, 39(4), 4559-4567.LIST OF PUBLICATIONS1. Razali, R. A. C., Rahim, N. A., Zainol, I., & Sharif, A. M. (2018). Preparationof Dental Composite Using Hydroxyapatite from Natural Sources and Silica.Journal of Physics: Conference Series, 1097, 012050.2. Razali, R. A. C., Zainol, I., & Rahim, N. A. (2020). Synthesis of NaturalHydroxyapatite from Fish Scales and Its Potential Application as Fillers in DentalComposites. American Journal of Engineering Research (AJER), 9(4),166-170.LIST OF CONFERENCES1. The 5?? International Conference on Research, Implementation and Education of Mathematics andSciences 2018 (5?? ICRIEMS). 7??-8?? May 2018. Faculty of Mathematics and Natural Science,Yogyakarta State University. Oral Presentation. Preparation of Dental Composites Using Silica and Hydroxyapatite from Natural Sources.2. The 5?? International Postgraduate Conference on Science and Mathematics 2017 (IPCSM2017). 7??-9?? October 2017 at Universiti Pendidikan Sultan Idris. Oral Presentation.Preparation of Dental Composites Using Silica and Hydroxyapatite from Natural Sources.3. The 4?? International Postgraduate Conference on Science and Mathematics 2016 (IPCSM2016). 19?? November 2016 at Universiti Pendidikan Sultan Idris. Oral Presentation.Preparation of Dental Composites Using Silica andHydroxyapatite from Natural Sources.

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