Microhardness and Diametral Compression Strength of Single Fill Composite

ABSTRACT: To evaluate Knoop microhardness and diametral compression strength at different polymerization times. A total of 80 cylindrical samples with Filtek resin™ One Bulk Fill were made to perform the in vitro study, using half of total samples (n=40) for each test and divided equally b...

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Autores principales:	de-Jesus,Ricardo Huver, Lage,Kalenna Soriano, Dalboni,Valéria Chiabai, Delboni,Ornella Luisa, Matos,Jefferson David Melo de, Nakano,Leonardo Jiro Nomura, Ortiz,Laura Patricia Nadal, Vasconcelos,John Eversong Lucena de, Bottino,Marco Antonio, Maciel,Lucas Campagnaro
Lenguaje:	English
Publicado:	Universidad de La Frontera. Facultad de Medicina 2021
Materias:	composite resins hardness stress, mechanical physical properties
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-381X2021000100293
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spelling	oai:scielo:S0718-381X20210001002932021-02-16Microhardness and Diametral Compression Strength of Single Fill Compositede-Jesus,Ricardo HuverLage,Kalenna SorianoDalboni,Valéria ChiabaiDelboni,Ornella LuisaMatos,Jefferson David Melo deNakano,Leonardo Jiro NomuraOrtiz,Laura Patricia NadalVasconcelos,John Eversong Lucena deBottino,Marco AntonioMaciel,Lucas Campagnaro composite resins hardness stress, mechanical physical properties ABSTRACT: To evaluate Knoop microhardness and diametral compression strength at different polymerization times. A total of 80 cylindrical samples with Filtek resin™ One Bulk Fill were made to perform the in vitro study, using half of total samples (n=40) for each test and divided equally between groups (n=10). All samples were made according to ISO 4049 using 2 mm thickness Teflon matrix and a central orifice with 4 mm diameter. Four different times of light-curing in Standard mode suggested by the light-unit manufacturer were selected, therefore, group 1 samples (G1) were light-cured for 5 seconds; group 2 (G2) for 10 seconds; group 3 (G3) for 15 seconds, and group 4 (G4) for 20 seconds. A radiant display, which means a power in mW/cm2 by time in seconds was expressed in Joules (J). The samples were stored in a dark container with distilled water at a temperature of 37°C for 48 hours before testing. One-way analysis of variance (ANOVA) with T-Test (LSD) of multiple comparisons of the mean values of Knoop hardness and diametral compression strength was performed, with significance index α=0.05. Regarding the Knoop microhardness test, G1 (35.73 ± 6.2) presented the lowest values, followed by G2, while G3 and G4 did not present statistical differences between them. For the diametral compression test, G1 (1387.76 ± 190.51) obtained the lowest value when compared to the other groups. G2, G3, and G4 did not present significant statistical differences. The different polymerization times influenced the Knoop microhardness and the diametral compression strength of Bulk Fill resin.info:eu-repo/semantics/openAccessUniversidad de La Frontera. Facultad de MedicinaInternational journal of odontostomatology v.15 n.1 20212021-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-381X2021000100293en10.4067/S0718-381X2021000100293
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	composite resins hardness stress, mechanical physical properties
spellingShingle	composite resins hardness stress, mechanical physical properties de-Jesus,Ricardo Huver Lage,Kalenna Soriano Dalboni,Valéria Chiabai Delboni,Ornella Luisa Matos,Jefferson David Melo de Nakano,Leonardo Jiro Nomura Ortiz,Laura Patricia Nadal Vasconcelos,John Eversong Lucena de Bottino,Marco Antonio Maciel,Lucas Campagnaro Microhardness and Diametral Compression Strength of Single Fill Composite
description	ABSTRACT: To evaluate Knoop microhardness and diametral compression strength at different polymerization times. A total of 80 cylindrical samples with Filtek resin™ One Bulk Fill were made to perform the in vitro study, using half of total samples (n=40) for each test and divided equally between groups (n=10). All samples were made according to ISO 4049 using 2 mm thickness Teflon matrix and a central orifice with 4 mm diameter. Four different times of light-curing in Standard mode suggested by the light-unit manufacturer were selected, therefore, group 1 samples (G1) were light-cured for 5 seconds; group 2 (G2) for 10 seconds; group 3 (G3) for 15 seconds, and group 4 (G4) for 20 seconds. A radiant display, which means a power in mW/cm2 by time in seconds was expressed in Joules (J). The samples were stored in a dark container with distilled water at a temperature of 37°C for 48 hours before testing. One-way analysis of variance (ANOVA) with T-Test (LSD) of multiple comparisons of the mean values of Knoop hardness and diametral compression strength was performed, with significance index α=0.05. Regarding the Knoop microhardness test, G1 (35.73 ± 6.2) presented the lowest values, followed by G2, while G3 and G4 did not present statistical differences between them. For the diametral compression test, G1 (1387.76 ± 190.51) obtained the lowest value when compared to the other groups. G2, G3, and G4 did not present significant statistical differences. The different polymerization times influenced the Knoop microhardness and the diametral compression strength of Bulk Fill resin.
author	de-Jesus,Ricardo Huver Lage,Kalenna Soriano Dalboni,Valéria Chiabai Delboni,Ornella Luisa Matos,Jefferson David Melo de Nakano,Leonardo Jiro Nomura Ortiz,Laura Patricia Nadal Vasconcelos,John Eversong Lucena de Bottino,Marco Antonio Maciel,Lucas Campagnaro
author_facet	de-Jesus,Ricardo Huver Lage,Kalenna Soriano Dalboni,Valéria Chiabai Delboni,Ornella Luisa Matos,Jefferson David Melo de Nakano,Leonardo Jiro Nomura Ortiz,Laura Patricia Nadal Vasconcelos,John Eversong Lucena de Bottino,Marco Antonio Maciel,Lucas Campagnaro
author_sort	de-Jesus,Ricardo Huver
title	Microhardness and Diametral Compression Strength of Single Fill Composite
title_short	Microhardness and Diametral Compression Strength of Single Fill Composite
title_full	Microhardness and Diametral Compression Strength of Single Fill Composite
title_fullStr	Microhardness and Diametral Compression Strength of Single Fill Composite
title_full_unstemmed	Microhardness and Diametral Compression Strength of Single Fill Composite
title_sort	microhardness and diametral compression strength of single fill composite
publisher	Universidad de La Frontera. Facultad de Medicina
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-381X2021000100293
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Microhardness and Diametral Compression Strength of Single Fill Composite

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