Flexural properties of three lithium disilicate materials: An in vitro evaluation

Objective: The goal of this study was to investigate the flexural strength, Young’s modulus and Weibull modulus of two heat-pressed and one CAD/CAM processed lithium disilicate (LD) ceramics. Material and methods: A total of 45 specimens with dimensions 16 × 4 × 1.2 ± 0.2 mm were fabricated out of t...

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Autores principales:	Ahmad M. Al-Thobity, Abdulmohsen Alsalman
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Lithium disilicate Ceramics CAD-CAM Heat press Medicine R Dentistry RK1-715
Acceso en línea:	https://doaj.org/article/554893b4f422485ea45066330f68dd47
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spelling	oai:doaj.org-article:554893b4f422485ea45066330f68dd472021-11-10T04:19:04ZFlexural properties of three lithium disilicate materials: An in vitro evaluation1013-905210.1016/j.sdentj.2020.07.004https://doaj.org/article/554893b4f422485ea45066330f68dd472021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1013905220307458https://doaj.org/toc/1013-9052Objective: The goal of this study was to investigate the flexural strength, Young’s modulus and Weibull modulus of two heat-pressed and one CAD/CAM processed lithium disilicate (LD) ceramics. Material and methods: A total of 45 specimens with dimensions 16 × 4 × 1.2 ± 0.2 mm were fabricated out of three LD ceramics. For heat-pressed LD specimens, acrylate polymer blocks were cut and divided into two groups (n = 15 per group); a GC LiSi Press LD group (LP) and an IPS e.max Press group (EP). Specimens for each group were pressed corresponding to the manufacturer’s recommendations. For the CAD-CAM Group (EC), IPS e.max CAD blocks were cut to obtain specimens (n = 15) to the desired dimensions. Flexural strength and Young’s modulus tests were executed using a universal testing machine. A one-way ANOVA and post-hoc Tuckey’s tests were applied to analyze the results (p ≤ 0.05). Results: Regarding flexural strength, the EC group showed higher statistically substantial difference than the EP and LP groups (p = 0.001), while there was no pronounced difference between the EP and LP groups (p = 0.065). For Young’s modulus test, all the three tested groups had no statistically substantial difference (p = 0.798). Conclusion: The IPS e.max CAD group had higher mechanical performance than the IPS e.max Press and GC LiSi Press groups.Ahmad M. Al-ThobityAbdulmohsen AlsalmanElsevierarticleLithium disilicateCeramicsCAD-CAMHeat pressMedicineRDentistryRK1-715ENSaudi Dental Journal, Vol 33, Iss 7, Pp 620-627 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Lithium disilicate Ceramics CAD-CAM Heat press Medicine R Dentistry RK1-715
spellingShingle	Lithium disilicate Ceramics CAD-CAM Heat press Medicine R Dentistry RK1-715 Ahmad M. Al-Thobity Abdulmohsen Alsalman Flexural properties of three lithium disilicate materials: An in vitro evaluation
description	Objective: The goal of this study was to investigate the flexural strength, Young’s modulus and Weibull modulus of two heat-pressed and one CAD/CAM processed lithium disilicate (LD) ceramics. Material and methods: A total of 45 specimens with dimensions 16 × 4 × 1.2 ± 0.2 mm were fabricated out of three LD ceramics. For heat-pressed LD specimens, acrylate polymer blocks were cut and divided into two groups (n = 15 per group); a GC LiSi Press LD group (LP) and an IPS e.max Press group (EP). Specimens for each group were pressed corresponding to the manufacturer’s recommendations. For the CAD-CAM Group (EC), IPS e.max CAD blocks were cut to obtain specimens (n = 15) to the desired dimensions. Flexural strength and Young’s modulus tests were executed using a universal testing machine. A one-way ANOVA and post-hoc Tuckey’s tests were applied to analyze the results (p ≤ 0.05). Results: Regarding flexural strength, the EC group showed higher statistically substantial difference than the EP and LP groups (p = 0.001), while there was no pronounced difference between the EP and LP groups (p = 0.065). For Young’s modulus test, all the three tested groups had no statistically substantial difference (p = 0.798). Conclusion: The IPS e.max CAD group had higher mechanical performance than the IPS e.max Press and GC LiSi Press groups.
format	article
author	Ahmad M. Al-Thobity Abdulmohsen Alsalman
author_facet	Ahmad M. Al-Thobity Abdulmohsen Alsalman
author_sort	Ahmad M. Al-Thobity
title	Flexural properties of three lithium disilicate materials: An in vitro evaluation
title_short	Flexural properties of three lithium disilicate materials: An in vitro evaluation
title_full	Flexural properties of three lithium disilicate materials: An in vitro evaluation
title_fullStr	Flexural properties of three lithium disilicate materials: An in vitro evaluation
title_full_unstemmed	Flexural properties of three lithium disilicate materials: An in vitro evaluation
title_sort	flexural properties of three lithium disilicate materials: an in vitro evaluation
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/554893b4f422485ea45066330f68dd47
work_keys_str_mv	AT ahmadmalthobity flexuralpropertiesofthreelithiumdisilicatematerialsaninvitroevaluation AT abdulmohsenalsalman flexuralpropertiesofthreelithiumdisilicatematerialsaninvitroevaluation
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Flexural properties of three lithium disilicate materials: An in vitro evaluation

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