Evaluation of physical and mechanical properties of zirconia and alumina reinforced experimental nanohybrid dental luting composite cement using silica from rice husk

Aims: This study aimed to extract silica from the rice husk, then characterised the synthesised silica and commercial zirconia and alumina fillers to fabricate experimental nanohybrid dental luting composite cement (NHDLCC). The zirconia and alumina reinforced experimental NHDLCC were subjected f...

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Main Author:	Islam, Md. Saiful
Format:	Thesis
Language:	English
Published:	2022
Subjects:	R Medicine RK1-715 Dentistry
Online Access:	http://eprints.usm.my/60363/1/MD%20SAIFUL%20ISLAM-FINAL%20THESIS%20P-SGM000218%28R%29%20-E.pdf
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spelling	my-usm-ep.603632024-04-18T06:40:58Z Evaluation of physical and mechanical properties of zirconia and alumina reinforced experimental nanohybrid dental luting composite cement using silica from rice husk 2022-03 Islam, Md. Saiful R Medicine RA440-440.87 Study and teaching. Research RK1-715 Dentistry Aims: This study aimed to extract silica from the rice husk, then characterised the synthesised silica and commercial zirconia and alumina fillers to fabricate experimental nanohybrid dental luting composite cement (NHDLCC). The zirconia and alumina reinforced experimental NHDLCC were subjected for the evaluation of compressive strength, flexural strength, viscosity, water sorption and solubility testings. Materials and methods: The unsilanated nano silica from rice husk was characterized using a scanning electron microscope (SEM) equipped with energy dispersive X-ray (EDX). Silica, zirconia and alumina fillers were subjected to a surface treatment using silane coupling agents. All the silanated and unsilanated fillers were then characterized using Fourier transform infrared spectroscopy (FTIR). Three groups were fabricated based on different types of filler reinforcement: Group 1 (3 wt.% zirconia); Group 2 (3 wt.% alumina); Group 3 (3 wt.% zirconia and 2 wt.% alumina) whereas experimental NHDLCC without zirconia and alumina reinforcement was used as a negative control and a commercial nanohybrid dental luting composite, Rely-XTM U200 luting cement (3M ESPE; USA) was used as a positive control. All the experimental groups were then characterized using (SEM) equipped with (EDX) and subjected to its mechanical and physical properties evaluation that included compressive strength, flexural strength, viscosity, water sorption and solubility. Oneway ANOVA was used for multiple group comparison followed by post-hoc (Bonferroni) A statistically significant level was set at p = 0.05. Results: SEM and EDX confirmed the homogenously distributed spherical-shaped filler and the presence of filler particles in each group of expermental NHDLCC. The compressive strength of 3 wt.% zirconia reinforced filler group was found significantly higher when compared to the negative control (p < 0.05). Meanwhile, for the flexural strength, the water sorption and solubility, 3 wt.% zirconia and 2 wt.% alumina reinforced filler group showed significantly higher compared to the negative control (p < 0.05). For the viscosity testing, 3 wt.% alumina reinforced filler group showed statistically significant increase of viscosity compared to control at the oscillation frequency (ω) of 1 rad/s (p < 0.05). However, the difference was found not statistically significant at the oscillation frequency (ω) of 10 rad/s (p > 0.05) of NHDLCC. Conclusion: The silica was successfully extracted from the rice husk and all three fillers were characterised before and after surface treatment with the silane coupling agent. The reinforcement of different percentages of zirconia and alumina filler particles in the experimental NHDLCC improved compressive strength, flexural strength, viscosity properties, and decreased water sorption and solubility. 2022-03 Thesis http://eprints.usm.my/60363/ http://eprints.usm.my/60363/1/MD%20SAIFUL%20ISLAM-FINAL%20THESIS%20P-SGM000218%28R%29%20-E.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Sains Kesihatan
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	R Medicine R Medicine RK1-715 Dentistry
spellingShingle	R Medicine R Medicine RK1-715 Dentistry Islam, Md. Saiful Evaluation of physical and mechanical properties of zirconia and alumina reinforced experimental nanohybrid dental luting composite cement using silica from rice husk
description	Aims: This study aimed to extract silica from the rice husk, then characterised the synthesised silica and commercial zirconia and alumina fillers to fabricate experimental nanohybrid dental luting composite cement (NHDLCC). The zirconia and alumina reinforced experimental NHDLCC were subjected for the evaluation of compressive strength, flexural strength, viscosity, water sorption and solubility testings. Materials and methods: The unsilanated nano silica from rice husk was characterized using a scanning electron microscope (SEM) equipped with energy dispersive X-ray (EDX). Silica, zirconia and alumina fillers were subjected to a surface treatment using silane coupling agents. All the silanated and unsilanated fillers were then characterized using Fourier transform infrared spectroscopy (FTIR). Three groups were fabricated based on different types of filler reinforcement: Group 1 (3 wt.% zirconia); Group 2 (3 wt.% alumina); Group 3 (3 wt.% zirconia and 2 wt.% alumina) whereas experimental NHDLCC without zirconia and alumina reinforcement was used as a negative control and a commercial nanohybrid dental luting composite, Rely-XTM U200 luting cement (3M ESPE; USA) was used as a positive control. All the experimental groups were then characterized using (SEM) equipped with (EDX) and subjected to its mechanical and physical properties evaluation that included compressive strength, flexural strength, viscosity, water sorption and solubility. Oneway ANOVA was used for multiple group comparison followed by post-hoc (Bonferroni) A statistically significant level was set at p = 0.05. Results: SEM and EDX confirmed the homogenously distributed spherical-shaped filler and the presence of filler particles in each group of expermental NHDLCC. The compressive strength of 3 wt.% zirconia reinforced filler group was found significantly higher when compared to the negative control (p < 0.05). Meanwhile, for the flexural strength, the water sorption and solubility, 3 wt.% zirconia and 2 wt.% alumina reinforced filler group showed significantly higher compared to the negative control (p < 0.05). For the viscosity testing, 3 wt.% alumina reinforced filler group showed statistically significant increase of viscosity compared to control at the oscillation frequency (ω) of 1 rad/s (p < 0.05). However, the difference was found not statistically significant at the oscillation frequency (ω) of 10 rad/s (p > 0.05) of NHDLCC. Conclusion: The silica was successfully extracted from the rice husk and all three fillers were characterised before and after surface treatment with the silane coupling agent. The reinforcement of different percentages of zirconia and alumina filler particles in the experimental NHDLCC improved compressive strength, flexural strength, viscosity properties, and decreased water sorption and solubility.
format	Thesis
qualification_level	Master's degree
author	Islam, Md. Saiful
author_facet	Islam, Md. Saiful
author_sort	Islam, Md. Saiful
title	Evaluation of physical and mechanical properties of zirconia and alumina reinforced experimental nanohybrid dental luting composite cement using silica from rice husk
title_short	Evaluation of physical and mechanical properties of zirconia and alumina reinforced experimental nanohybrid dental luting composite cement using silica from rice husk
title_full	Evaluation of physical and mechanical properties of zirconia and alumina reinforced experimental nanohybrid dental luting composite cement using silica from rice husk
title_fullStr	Evaluation of physical and mechanical properties of zirconia and alumina reinforced experimental nanohybrid dental luting composite cement using silica from rice husk
title_full_unstemmed	Evaluation of physical and mechanical properties of zirconia and alumina reinforced experimental nanohybrid dental luting composite cement using silica from rice husk
title_sort	evaluation of physical and mechanical properties of zirconia and alumina reinforced experimental nanohybrid dental luting composite cement using silica from rice husk
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Sains Kesihatan
publishDate	2022
url	http://eprints.usm.my/60363/1/MD%20SAIFUL%20ISLAM-FINAL%20THESIS%20P-SGM000218%28R%29%20-E.pdf
_version_	1804888922159841280

Evaluation of physical and mechanical properties of zirconia and alumina reinforced experimental nanohybrid dental luting composite cement using silica from rice husk

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