Staff View: Hardness of Flowable Resin Composite from Rice Husk / Nazrul M. Yusoff ...[et al.]

Hardness of Flowable Resin Composite from Rice Husk / Nazrul M. Yusoff ...[et al.]

The aim of this study was to evaluate the hardness of two experimental dental flowable resin composites (FRCs) from rice husk in comparison to other commercial flowable resin composites. The nanohybrid silica used as the filler for the experimental FRCs was extracted from rice husk. Two commercial F...

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Main Authors:	M. Yusoff, Nazrul, Johari, Yanti, Ab Rahman, Ismail, Mohamad, Dasmawati, Khamis, Mohd Fadhli, Husein, Adam, Ariffin, Zaihan
Format:	Article
Language:	English
Published:	Faculty of Mechanical Engineering Universiti Teknologi MARA (UiTM) 2018
Subjects:	Materials of engineering and construction Composite materials. TJ Mechanical engineering and machinery
Online Access:	http://ir.uitm.edu.my/id/eprint/39389/1/39389.pdf http://ir.uitm.edu.my/id/eprint/39389/
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spelling	my.uitm.ir.393892020-12-21T01:22:19Z http://ir.uitm.edu.my/id/eprint/39389/ Hardness of Flowable Resin Composite from Rice Husk / Nazrul M. Yusoff ...[et al.] M. Yusoff, Nazrul Johari, Yanti Ab Rahman, Ismail Mohamad, Dasmawati Khamis, Mohd Fadhli Husein, Adam Ariffin, Zaihan Materials of engineering and construction Composite materials. TJ Mechanical engineering and machinery The aim of this study was to evaluate the hardness of two experimental dental flowable resin composites (FRCs) from rice husk in comparison to other commercial flowable resin composites. The nanohybrid silica used as the filler for the experimental FRCs was extracted from rice husk. Two commercial FRCs namely Filtek Z350 flow and Tetric N flow and the experimental FRCs with different loading of Bis-GMA at 50 % (EC50B) and 40 % (EC40B) were used. Ten cylindrical specimens (5 x 2mm) for each material were prepared in acrylic mould, light cured and polished. Prior to hardness test, all the composites were immersed in distilled water at 37 ℃ for 24 h. The Vickers’ hardness number (VHN) was measured using Vickers’ hardness tester and their surface morphology was investigated using scanning electron microscopy (SEM). The data was analyzed by one way ANOVA followed by Dunnett T3 post hoc test. Results showed that Filtek Z350 flow was statistically significantly higher in regards to VHN compared to the other FRCs tested. There was no statistically significant difference in VHN between the Tetric N flow and the two experimental FRCs. SEM showed a well distributed embedded spherical filler particle in all FRCs. In conclusion, the two experimental FRCs were comparable to Tetric N flow however Filtek Z350 flow exhibited the highest hardness. This was possibly attributed to different filler loading. Between the experimental composites, EC40B had a higher hardness which can be explained by dilution effect on monomer system. In general, mechanical properties improved with increased filler loading and dilution of base monomer. Faculty of Mechanical Engineering Universiti Teknologi MARA (UiTM) 2018 Article PeerReviewed text en http://ir.uitm.edu.my/id/eprint/39389/1/39389.pdf M. Yusoff, Nazrul and Johari, Yanti and Ab Rahman, Ismail and Mohamad, Dasmawati and Khamis, Mohd Fadhli and Husein, Adam and Ariffin, Zaihan (2018) Hardness of Flowable Resin Composite from Rice Husk / Nazrul M. Yusoff ...[et al.]. Journal of Mechanical Engineering (JMechE), SI 5 (2). pp. 181-190. ISSN 18235514
institution	Universiti Teknologi Mara
building	Tun Abdul Razak Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Mara
content_source	UiTM Institutional Repository
url_provider	http://ir.uitm.edu.my/
language	English
topic	Materials of engineering and construction Composite materials. TJ Mechanical engineering and machinery
spellingShingle	Materials of engineering and construction Composite materials. TJ Mechanical engineering and machinery M. Yusoff, Nazrul Johari, Yanti Ab Rahman, Ismail Mohamad, Dasmawati Khamis, Mohd Fadhli Husein, Adam Ariffin, Zaihan Hardness of Flowable Resin Composite from Rice Husk / Nazrul M. Yusoff ...[et al.]
description	The aim of this study was to evaluate the hardness of two experimental dental flowable resin composites (FRCs) from rice husk in comparison to other commercial flowable resin composites. The nanohybrid silica used as the filler for the experimental FRCs was extracted from rice husk. Two commercial FRCs namely Filtek Z350 flow and Tetric N flow and the experimental FRCs with different loading of Bis-GMA at 50 % (EC50B) and 40 % (EC40B) were used. Ten cylindrical specimens (5 x 2mm) for each material were prepared in acrylic mould, light cured and polished. Prior to hardness test, all the composites were immersed in distilled water at 37 ℃ for 24 h. The Vickers’ hardness number (VHN) was measured using Vickers’ hardness tester and their surface morphology was investigated using scanning electron microscopy (SEM). The data was analyzed by one way ANOVA followed by Dunnett T3 post hoc test. Results showed that Filtek Z350 flow was statistically significantly higher in regards to VHN compared to the other FRCs tested. There was no statistically significant difference in VHN between the Tetric N flow and the two experimental FRCs. SEM showed a well distributed embedded spherical filler particle in all FRCs. In conclusion, the two experimental FRCs were comparable to Tetric N flow however Filtek Z350 flow exhibited the highest hardness. This was possibly attributed to different filler loading. Between the experimental composites, EC40B had a higher hardness which can be explained by dilution effect on monomer system. In general, mechanical properties improved with increased filler loading and dilution of base monomer.
format	Article
author	M. Yusoff, Nazrul Johari, Yanti Ab Rahman, Ismail Mohamad, Dasmawati Khamis, Mohd Fadhli Husein, Adam Ariffin, Zaihan
author_facet	M. Yusoff, Nazrul Johari, Yanti Ab Rahman, Ismail Mohamad, Dasmawati Khamis, Mohd Fadhli Husein, Adam Ariffin, Zaihan
author_sort	M. Yusoff, Nazrul
title	Hardness of Flowable Resin Composite from Rice Husk / Nazrul M. Yusoff ...[et al.]
title_short	Hardness of Flowable Resin Composite from Rice Husk / Nazrul M. Yusoff ...[et al.]
title_full	Hardness of Flowable Resin Composite from Rice Husk / Nazrul M. Yusoff ...[et al.]
title_fullStr	Hardness of Flowable Resin Composite from Rice Husk / Nazrul M. Yusoff ...[et al.]
title_full_unstemmed	Hardness of Flowable Resin Composite from Rice Husk / Nazrul M. Yusoff ...[et al.]
title_sort	hardness of flowable resin composite from rice husk / nazrul m. yusoff ...[et al.]
publisher	Faculty of Mechanical Engineering Universiti Teknologi MARA (UiTM)
publishDate	2018
url	http://ir.uitm.edu.my/id/eprint/39389/1/39389.pdf http://ir.uitm.edu.my/id/eprint/39389/
_version_	1687396773701615616
score	13.244413

Hardness of Flowable Resin Composite from Rice Husk / Nazrul M. Yusoff ...[et al.]

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