Comparison of Flexural Strength and Surface Hardness of Polymethyl Methacrylate Resin Reinforced with Silanised Aluminium Oxide Nanoparticles- An In-vitro Study

Introduction: In complete denture fabrication, the common denture base material used is heat activated Polymethyl Methacrylate (PMMA). Considering various advantages, still there are some disadvantages like poor flexural strength and poor wear resistance. The flexural strength of any material re...

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Autores principales:	RAJESWARI POKURI, DURGA PRASAD TADI, SUNIL TRIPURANENI, HEMCHAND SURAPANENI, SRI HARSHA BABU VADAPALLI, AISWARYA SUGGALA
Formato:	article
Lenguaje:	EN
Publicado:	JCDR Research and Publications Private Limited 2021
Materias:	complete denture prosthodontics denture base resins mechanical properties silane coupling agent Medicine R
Acceso en línea:	https://doaj.org/article/94bed49a703e42afb5f5ddc68278e953
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spelling	oai:doaj.org-article:94bed49a703e42afb5f5ddc68278e9532021-11-14T06:35:50ZComparison of Flexural Strength and Surface Hardness of Polymethyl Methacrylate Resin Reinforced with Silanised Aluminium Oxide Nanoparticles- An In-vitro Study10.7860/JCDR/2021/49788.154212249-782X0973-709Xhttps://doaj.org/article/94bed49a703e42afb5f5ddc68278e9532021-09-01T00:00:00Zhttps://www.jcdr.net/articles/PDF/15421/49788_CE[Ra1]_F[SH]_PF1(SC_SHU)_PFA_PB(SC_KM)_PN(KM).pdfhttps://doaj.org/toc/2249-782Xhttps://doaj.org/toc/0973-709XIntroduction: In complete denture fabrication, the common denture base material used is heat activated Polymethyl Methacrylate (PMMA). Considering various advantages, still there are some disadvantages like poor flexural strength and poor wear resistance. The flexural strength of any material reflects its potential to resist catastrophic fracture under a flexural load. Another property that influences the surface characteristics of acrylic resins is the surface hardness, which indicates the ease of finishing a material and its resistance to in-service scratching during cleaning procedures and exposure to various oral fluids. Thus an ideal denture base material should exhibit greater flexural strength and high surface hardness for the longevity of the dentures. Aim: To evaluate the effects of adding different percentages of silanised aluminium oxide (Al2 O3 ) nanoparticles on the flexural strength and surface hardness of a conventional heat-polymerised acrylic resin. Materials and Methods: The in-vitro experimental study was conducted between October 2020 to Janaury 2021 at Drs. Sudha and Nageswara Rao Siddhartha Institute of Dental Sciences, Vijayawada, Andhra Pradesh, India. A total of 120 samples were fabricated and were grouped into four groups coded A to D (n=30). Group A was the control group (without adding Al2 O3 ). Specimens in the other three groups (B to D) were reinforced with silanised Al2 O3 at loadings of 1%, 2.5% and 5% w/w. Flexural strength was assessed with a three-point bending test using a universal testing machine. Surface hardness test was conducted using a Vickers Hardness (VH) tester. Data was analysed using Analysis of Variance (ANOVA) and Tukey’s post-hoc test. Results: Among all the reinforced groups highest flexural strength value was seen in Group C- PMMA+2.5% w/w silanised aluminium oxide nanoparticles reinforced group (88.33 Mpa) and highest surface hardness value was seen in the Group D- PMMA+5% w/w silanised Aluminium oxide nanoparticles reinforced group (29.44 VH). Conclusion: Reinforcement of the conventional heat cured acrylic resin with 2.5% w/w silanised Al2 O3 nanoparticles significantly increased its flexural strength and hardness.RAJESWARI POKURIDURGA PRASAD TADISUNIL TRIPURANENIHEMCHAND SURAPANENISRI HARSHA BABU VADAPALLI AISWARYA SUGGALAJCDR Research and Publications Private Limitedarticlecomplete denture prosthodonticsdenture base resinsmechanical propertiessilane coupling agentMedicineRENJournal of Clinical and Diagnostic Research, Vol 15, Iss 9, Pp ZC41-ZC46 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	complete denture prosthodontics denture base resins mechanical properties silane coupling agent Medicine R
spellingShingle	complete denture prosthodontics denture base resins mechanical properties silane coupling agent Medicine R RAJESWARI POKURI DURGA PRASAD TADI SUNIL TRIPURANENI HEMCHAND SURAPANENI SRI HARSHA BABU VADAPALLI AISWARYA SUGGALA Comparison of Flexural Strength and Surface Hardness of Polymethyl Methacrylate Resin Reinforced with Silanised Aluminium Oxide Nanoparticles- An In-vitro Study
description	Introduction: In complete denture fabrication, the common denture base material used is heat activated Polymethyl Methacrylate (PMMA). Considering various advantages, still there are some disadvantages like poor flexural strength and poor wear resistance. The flexural strength of any material reflects its potential to resist catastrophic fracture under a flexural load. Another property that influences the surface characteristics of acrylic resins is the surface hardness, which indicates the ease of finishing a material and its resistance to in-service scratching during cleaning procedures and exposure to various oral fluids. Thus an ideal denture base material should exhibit greater flexural strength and high surface hardness for the longevity of the dentures. Aim: To evaluate the effects of adding different percentages of silanised aluminium oxide (Al2 O3 ) nanoparticles on the flexural strength and surface hardness of a conventional heat-polymerised acrylic resin. Materials and Methods: The in-vitro experimental study was conducted between October 2020 to Janaury 2021 at Drs. Sudha and Nageswara Rao Siddhartha Institute of Dental Sciences, Vijayawada, Andhra Pradesh, India. A total of 120 samples were fabricated and were grouped into four groups coded A to D (n=30). Group A was the control group (without adding Al2 O3 ). Specimens in the other three groups (B to D) were reinforced with silanised Al2 O3 at loadings of 1%, 2.5% and 5% w/w. Flexural strength was assessed with a three-point bending test using a universal testing machine. Surface hardness test was conducted using a Vickers Hardness (VH) tester. Data was analysed using Analysis of Variance (ANOVA) and Tukey’s post-hoc test. Results: Among all the reinforced groups highest flexural strength value was seen in Group C- PMMA+2.5% w/w silanised aluminium oxide nanoparticles reinforced group (88.33 Mpa) and highest surface hardness value was seen in the Group D- PMMA+5% w/w silanised Aluminium oxide nanoparticles reinforced group (29.44 VH). Conclusion: Reinforcement of the conventional heat cured acrylic resin with 2.5% w/w silanised Al2 O3 nanoparticles significantly increased its flexural strength and hardness.
format	article
author	RAJESWARI POKURI DURGA PRASAD TADI SUNIL TRIPURANENI HEMCHAND SURAPANENI SRI HARSHA BABU VADAPALLI AISWARYA SUGGALA
author_facet	RAJESWARI POKURI DURGA PRASAD TADI SUNIL TRIPURANENI HEMCHAND SURAPANENI SRI HARSHA BABU VADAPALLI AISWARYA SUGGALA
author_sort	RAJESWARI POKURI
title	Comparison of Flexural Strength and Surface Hardness of Polymethyl Methacrylate Resin Reinforced with Silanised Aluminium Oxide Nanoparticles- An In-vitro Study
title_short	Comparison of Flexural Strength and Surface Hardness of Polymethyl Methacrylate Resin Reinforced with Silanised Aluminium Oxide Nanoparticles- An In-vitro Study
title_full	Comparison of Flexural Strength and Surface Hardness of Polymethyl Methacrylate Resin Reinforced with Silanised Aluminium Oxide Nanoparticles- An In-vitro Study
title_fullStr	Comparison of Flexural Strength and Surface Hardness of Polymethyl Methacrylate Resin Reinforced with Silanised Aluminium Oxide Nanoparticles- An In-vitro Study
title_full_unstemmed	Comparison of Flexural Strength and Surface Hardness of Polymethyl Methacrylate Resin Reinforced with Silanised Aluminium Oxide Nanoparticles- An In-vitro Study
title_sort	comparison of flexural strength and surface hardness of polymethyl methacrylate resin reinforced with silanised aluminium oxide nanoparticles- an in-vitro study
publisher	JCDR Research and Publications Private Limited
publishDate	2021
url	https://doaj.org/article/94bed49a703e42afb5f5ddc68278e953
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Comparison of Flexural Strength and Surface Hardness of Polymethyl Methacrylate Resin Reinforced with Silanised Aluminium Oxide Nanoparticles- An In-vitro Study

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