Influence of expiration date on the dimensional accuracy of elastomers
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Research, Society and Development |
Texto Completo: | https://rsdjournal.org/index.php/rsd/article/view/8147 |
Resumo: | Impression materials are used to make models in different dentistry fields, with emphasis on oral rehabilitation with fixed and removable prostheses or dentures. The aim was to compare the dimensional accuracy of impressions based on polyvinylsiloxane (Express) and polyether (Impregum Soft) elastomers performed 2 years after their expiration date to impressions that did not exceed this period. Impressions were performed over matrix with metal tray; they were removed after polymerization and divided into 4 groups (n=5). Dimensional accuracy was evaluated through optical microscopy on the 20-µm line at 25-mm length (ISO 4823 standard). Dimensional accuracy values (%) were subjected to two-way ANOVA (material × expiration date) and Tukey's test (α=0.05). Based on the analysis of expiration date as independent factor (p=0.017), mean dimensional accuracy values recorded for elastomer impression 2 years after expiration date (99.89%) were statistically lower than values recorded for the non-expired one (99.92%). Changes resulting from the use of elastomers 2 years after their expiration date do not affect the dimensional accuracy of prostheses deriving from these impressions. |
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Influence of expiration date on the dimensional accuracy of elastomersInfluencia de la fecha de caducidad en la estabilidad dimensional de los elastómerosInfluência da data de validade na estabilidade dimensional dos elastômerosMateriais para moldagem odontológicaElastômerosPrazo de validade de produtos.Materiales de impresión dentalElastómerosFecha de caducidad de productos.Dental impression materialsElastomersDate of validity of products.Impression materials are used to make models in different dentistry fields, with emphasis on oral rehabilitation with fixed and removable prostheses or dentures. The aim was to compare the dimensional accuracy of impressions based on polyvinylsiloxane (Express) and polyether (Impregum Soft) elastomers performed 2 years after their expiration date to impressions that did not exceed this period. Impressions were performed over matrix with metal tray; they were removed after polymerization and divided into 4 groups (n=5). Dimensional accuracy was evaluated through optical microscopy on the 20-µm line at 25-mm length (ISO 4823 standard). Dimensional accuracy values (%) were subjected to two-way ANOVA (material × expiration date) and Tukey's test (α=0.05). Based on the analysis of expiration date as independent factor (p=0.017), mean dimensional accuracy values recorded for elastomer impression 2 years after expiration date (99.89%) were statistically lower than values recorded for the non-expired one (99.92%). Changes resulting from the use of elastomers 2 years after their expiration date do not affect the dimensional accuracy of prostheses deriving from these impressions.Los materiales de impresión son utilizados para la confección de modelos en las diferentes áreas de la odontología, con énfasis en la rehabilitación oral con prótesis fijas, removibles o prótesis totales. El objetivo fue comparar la estabilidad dimensional de las impresiones utilizando elastómeros de polivinilxilosano (Express) y poliéter (Impregum Soft) realizadas 2 años después de su fecha de caducidad con impresiones que no excedan este tiempo. Las impresiones fueron realizadas sobre una matriz con cubeta metálica; fueron removidos luego de la polimerización y divididos en 4 grupos (n = 5). La estabilidad dimensional fue evaluada por microscopia óptica en la línea de 20 µm con longitud de 25 nm (norma ISO 4823). Los valores de la estabilidad dimensional (%) fueron sometidos a ANOVA two-way (material x fecha de caducidad) y prueba de Tukey (α = 0,05). Con base en el análisis de fecha de caducidad como factor independiente (p = 0,017), los valores promedio de la estabilidad dimensional registrados para la impresión con elastómeros 2 años luego de la caducidad (99,89%) fueron estadísticamente inferiores a los valores registrados para los no caducados (99,92%). Las alteraciones resultantes del uso de elastómeros 2 años luego de su caducidad no afectan la estabilidad dimensional de las prótesis utilizadas con estas impresiones.Os materiais de impressão são utilizados na confecção de modelos em diferentes áreas da odontologia, com ênfase na reabilitação oral com próteses fixas e removíveis ou dentaduras. O objetivo foi comparar a estabilidade dimensional de impressões baseadas em elastômeros de polivinilsiloxano (Express) e poliéter (Impregum Soft) realizadas 2 anos após sua data de validade com impressões que não ultrapassaram esse período. As impressões foram realizadas sobre matriz com moldeira metálica; eles foram removidos após a polimerização e divididos em 4 grupos (n = 5). A estabilidade dimensional foi avaliada por microscopia óptica na linha de 20 µm com comprimento de 25 mm (padrão ISO 4823). Os valores de estabilidade dimensional (%) foram submetidos a ANOVA two-way (material x data de validade) e teste de Tukey (α = 0,05). Com base na análise da data de validade como fator independente (p = 0,017), os valores médios de estabilidade dimensional registrados para a impressão de elastômero 2 anos após a data de expiração (99,89%) foram estatisticamente inferiores aos valores registrados para o não expirado (99,92%) As alterações decorrentes do uso dos elastômeros 2 anos após o seu vencimento não afetam a estabilidade dimensional das próteses decorrentes dessas impressões.Research, Society and Development2020-09-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/814710.33448/rsd-v9i10.8147Research, Society and Development; Vol. 9 No. 10; e489108147Research, Society and Development; Vol. 9 Núm. 10; e489108147Research, Society and Development; v. 9 n. 10; e4891081472525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIenghttps://rsdjournal.org/index.php/rsd/article/view/8147/7345Copyright (c) 2020 Ricardo Danil Guiraldo; Sandrine Bittencourt Berger; Eloisa Aparecida Carlesse Paloco; Alexandre dos Reis Freitas; Murilo Baena Lopes; Rodrigo Ribeiro de Carvalho; Gabriela Fleury Seixas; Mário Alexandre Coelho Sinhoretihttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessGuiraldo, Ricardo DanilBerger, Sandrine BittencourtPaloco, Eloisa Aparecida CarlesseFreitas, Alexandre dos ReisLopes, Murilo BaenaCarvalho, Rodrigo Ribeiro de Seixas, Gabriela FleurySinhoreti, Mário Alexandre Coelho2020-10-31T12:03:23Zoai:ojs.pkp.sfu.ca:article/8147Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:30:41.409429Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false |
dc.title.none.fl_str_mv |
Influence of expiration date on the dimensional accuracy of elastomers Influencia de la fecha de caducidad en la estabilidad dimensional de los elastómeros Influência da data de validade na estabilidade dimensional dos elastômeros |
title |
Influence of expiration date on the dimensional accuracy of elastomers |
spellingShingle |
Influence of expiration date on the dimensional accuracy of elastomers Guiraldo, Ricardo Danil Materiais para moldagem odontológica Elastômeros Prazo de validade de produtos. Materiales de impresión dental Elastómeros Fecha de caducidad de productos. Dental impression materials Elastomers Date of validity of products. |
title_short |
Influence of expiration date on the dimensional accuracy of elastomers |
title_full |
Influence of expiration date on the dimensional accuracy of elastomers |
title_fullStr |
Influence of expiration date on the dimensional accuracy of elastomers |
title_full_unstemmed |
Influence of expiration date on the dimensional accuracy of elastomers |
title_sort |
Influence of expiration date on the dimensional accuracy of elastomers |
author |
Guiraldo, Ricardo Danil |
author_facet |
Guiraldo, Ricardo Danil Berger, Sandrine Bittencourt Paloco, Eloisa Aparecida Carlesse Freitas, Alexandre dos Reis Lopes, Murilo Baena Carvalho, Rodrigo Ribeiro de Seixas, Gabriela Fleury Sinhoreti, Mário Alexandre Coelho |
author_role |
author |
author2 |
Berger, Sandrine Bittencourt Paloco, Eloisa Aparecida Carlesse Freitas, Alexandre dos Reis Lopes, Murilo Baena Carvalho, Rodrigo Ribeiro de Seixas, Gabriela Fleury Sinhoreti, Mário Alexandre Coelho |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Guiraldo, Ricardo Danil Berger, Sandrine Bittencourt Paloco, Eloisa Aparecida Carlesse Freitas, Alexandre dos Reis Lopes, Murilo Baena Carvalho, Rodrigo Ribeiro de Seixas, Gabriela Fleury Sinhoreti, Mário Alexandre Coelho |
dc.subject.por.fl_str_mv |
Materiais para moldagem odontológica Elastômeros Prazo de validade de produtos. Materiales de impresión dental Elastómeros Fecha de caducidad de productos. Dental impression materials Elastomers Date of validity of products. |
topic |
Materiais para moldagem odontológica Elastômeros Prazo de validade de produtos. Materiales de impresión dental Elastómeros Fecha de caducidad de productos. Dental impression materials Elastomers Date of validity of products. |
description |
Impression materials are used to make models in different dentistry fields, with emphasis on oral rehabilitation with fixed and removable prostheses or dentures. The aim was to compare the dimensional accuracy of impressions based on polyvinylsiloxane (Express) and polyether (Impregum Soft) elastomers performed 2 years after their expiration date to impressions that did not exceed this period. Impressions were performed over matrix with metal tray; they were removed after polymerization and divided into 4 groups (n=5). Dimensional accuracy was evaluated through optical microscopy on the 20-µm line at 25-mm length (ISO 4823 standard). Dimensional accuracy values (%) were subjected to two-way ANOVA (material × expiration date) and Tukey's test (α=0.05). Based on the analysis of expiration date as independent factor (p=0.017), mean dimensional accuracy values recorded for elastomer impression 2 years after expiration date (99.89%) were statistically lower than values recorded for the non-expired one (99.92%). Changes resulting from the use of elastomers 2 years after their expiration date do not affect the dimensional accuracy of prostheses deriving from these impressions. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-09-17 |
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://rsdjournal.org/index.php/rsd/article/view/8147 10.33448/rsd-v9i10.8147 |
url |
https://rsdjournal.org/index.php/rsd/article/view/8147 |
identifier_str_mv |
10.33448/rsd-v9i10.8147 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://rsdjournal.org/index.php/rsd/article/view/8147/7345 |
dc.rights.driver.fl_str_mv |
https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Research, Society and Development |
publisher.none.fl_str_mv |
Research, Society and Development |
dc.source.none.fl_str_mv |
Research, Society and Development; Vol. 9 No. 10; e489108147 Research, Society and Development; Vol. 9 Núm. 10; e489108147 Research, Society and Development; v. 9 n. 10; e489108147 2525-3409 reponame:Research, Society and Development instname:Universidade Federal de Itajubá (UNIFEI) instacron:UNIFEI |
instname_str |
Universidade Federal de Itajubá (UNIFEI) |
instacron_str |
UNIFEI |
institution |
UNIFEI |
reponame_str |
Research, Society and Development |
collection |
Research, Society and Development |
repository.name.fl_str_mv |
Research, Society and Development - Universidade Federal de Itajubá (UNIFEI) |
repository.mail.fl_str_mv |
rsd.articles@gmail.com |
_version_ |
1797052739993206784 |