An evaluation of the compression strength of gypsum according to proportion and manipulation
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Brazilian Dental Science |
Texto Completo: | https://ojs.ict.unesp.br/index.php/cob/article/view/343 |
Resumo: | This study evaluated the compression strength of gypsum type IV and V according to 2 variables: 1) water proportioned randomly or as recommended by the manufacturer and 2) according to 3 (three) different groups of operators (dentists, technicians and dental students). 180 specimens, produced according to ADA regulation nr. 25 underwent, after seven days (dry resistance), the compression strength test in an universal testing machine. After statistical analyses of the data, there was no statistical significant difference regarding the group of operators. Regarding the variable proportion, the specimens manufactured using a random proportion of water/gypsum powder presented a lower compression value (626,2 Kgf/cm2) when compared to the group where the amount of water/gypsum powder followed the recommendation of the manufacturer (741,7 Kgf/cm2). This difference was statistically significant (p<0.01). |
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oai:ojs.pkp.sfu.ca:article/343 |
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UNESP-20 |
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Brazilian Dental Science |
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|
spelling |
An evaluation of the compression strength of gypsum according to proportion and manipulationThis study evaluated the compression strength of gypsum type IV and V according to 2 variables: 1) water proportioned randomly or as recommended by the manufacturer and 2) according to 3 (three) different groups of operators (dentists, technicians and dental students). 180 specimens, produced according to ADA regulation nr. 25 underwent, after seven days (dry resistance), the compression strength test in an universal testing machine. After statistical analyses of the data, there was no statistical significant difference regarding the group of operators. Regarding the variable proportion, the specimens manufactured using a random proportion of water/gypsum powder presented a lower compression value (626,2 Kgf/cm2) when compared to the group where the amount of water/gypsum powder followed the recommendation of the manufacturer (741,7 Kgf/cm2). This difference was statistically significant (p<0.01).Institute of Science and Technology of São José dos Campos2010-08-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.ict.unesp.br/index.php/cob/article/view/34310.14295/bds.2005.v8i2.343Brazilian Dental Science; Vol. 8 No. 2 (2005)Brazilian Dental Science; v. 8 n. 2 (2005)2178-6011reponame:Brazilian Dental Scienceinstname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)instacron:UNESPporhttps://ojs.ict.unesp.br/index.php/cob/article/view/343/273Cardoso, Paulo E. C.Burmann, Paulo A.Anziliero, LucianoCardoso, Jomara M. F. S.Tavares, Andréa U.Sadek, Fernanda T.info:eu-repo/semantics/openAccess2018-08-30T09:12:48Zoai:ojs.pkp.sfu.ca:article/343Revistahttp://bds.ict.unesp.br/PUBhttp://ojs.fosjc.unesp.br/index.php/index/oaisergio@fosjc.unesp.br||sergio@fosjc.unesp.br2178-60112178-6011opendoar:2022-11-08T16:29:32.553819Brazilian Dental Science - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)true |
dc.title.none.fl_str_mv |
An evaluation of the compression strength of gypsum according to proportion and manipulation |
title |
An evaluation of the compression strength of gypsum according to proportion and manipulation |
spellingShingle |
An evaluation of the compression strength of gypsum according to proportion and manipulation Cardoso, Paulo E. C. |
title_short |
An evaluation of the compression strength of gypsum according to proportion and manipulation |
title_full |
An evaluation of the compression strength of gypsum according to proportion and manipulation |
title_fullStr |
An evaluation of the compression strength of gypsum according to proportion and manipulation |
title_full_unstemmed |
An evaluation of the compression strength of gypsum according to proportion and manipulation |
title_sort |
An evaluation of the compression strength of gypsum according to proportion and manipulation |
author |
Cardoso, Paulo E. C. |
author_facet |
Cardoso, Paulo E. C. Burmann, Paulo A. Anziliero, Luciano Cardoso, Jomara M. F. S. Tavares, Andréa U. Sadek, Fernanda T. |
author_role |
author |
author2 |
Burmann, Paulo A. Anziliero, Luciano Cardoso, Jomara M. F. S. Tavares, Andréa U. Sadek, Fernanda T. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Cardoso, Paulo E. C. Burmann, Paulo A. Anziliero, Luciano Cardoso, Jomara M. F. S. Tavares, Andréa U. Sadek, Fernanda T. |
description |
This study evaluated the compression strength of gypsum type IV and V according to 2 variables: 1) water proportioned randomly or as recommended by the manufacturer and 2) according to 3 (three) different groups of operators (dentists, technicians and dental students). 180 specimens, produced according to ADA regulation nr. 25 underwent, after seven days (dry resistance), the compression strength test in an universal testing machine. After statistical analyses of the data, there was no statistical significant difference regarding the group of operators. Regarding the variable proportion, the specimens manufactured using a random proportion of water/gypsum powder presented a lower compression value (626,2 Kgf/cm2) when compared to the group where the amount of water/gypsum powder followed the recommendation of the manufacturer (741,7 Kgf/cm2). This difference was statistically significant (p<0.01). |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-08-13 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.ict.unesp.br/index.php/cob/article/view/343 10.14295/bds.2005.v8i2.343 |
url |
https://ojs.ict.unesp.br/index.php/cob/article/view/343 |
identifier_str_mv |
10.14295/bds.2005.v8i2.343 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://ojs.ict.unesp.br/index.php/cob/article/view/343/273 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Institute of Science and Technology of São José dos Campos |
publisher.none.fl_str_mv |
Institute of Science and Technology of São José dos Campos |
dc.source.none.fl_str_mv |
Brazilian Dental Science; Vol. 8 No. 2 (2005) Brazilian Dental Science; v. 8 n. 2 (2005) 2178-6011 reponame:Brazilian Dental Science instname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Brazilian Dental Science |
collection |
Brazilian Dental Science |
repository.name.fl_str_mv |
Brazilian Dental Science - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) |
repository.mail.fl_str_mv |
sergio@fosjc.unesp.br||sergio@fosjc.unesp.br |
_version_ |
1788346896911171584 |