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Revista Odontológica do Brasil Central
Article . 2021 . Peer-reviewed
License: CC BY NC SA
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Revista Odontológica do Brasil Central
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License: CC BY NC SA
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Resistência à tração de coroas metálicas cimentadas com cimentos provisórios

Authors: Jonas Alves de Oliveira; Lara Pepita de Souza Oliveira; Juliana Rodrigues Paes Barreto; Soraia Sena de Moura Queiroga;

Resistência à tração de coroas metálicas cimentadas com cimentos provisórios

Abstract

A cimentação provisória contribui na reabilitação estética e funcional, enquanto espera-se pela cimentação do material definitivo, sendo fundamental a utilização de cimentos com boas propriedades biomecânicas, como a resistência friccional, evitando seu deslocamento e infiltração. Objetivo: Este estudo in vitro avaliou a resistência friccional por tração na cimentação de coroas metálicas fundidas com 3 agentes cimentantes provisórios, após 7 dias e 21 dias. Material e método: foram selecionados 24 dentes humanos (terceiros molares), hígidos ou com pequenas lesões cariosas, que foram preparados conforme Técnica da Silhueta e enviados para a fundição, para confecção das coroas metálicas em Ni-Cr. Os corpos-de-prova foram divididos em: Grupo I: Cimento de hidróxido de cálcio (Dycal); Grupo II: Cimento de óxido de zinco e eugenol (Temp-Bond) e Grupo III: Cimento de óxido de zinco sem eugenol (Temp- Bond NE). A força de tração dos corpos-de-prova foi mensurada em uma Máquina Universal de Ensaios (Instron). A análise estatística dos dados foi realizada pelo teste ANOVA e teste de Bonferrori (p<0,05). Resultados: Ambos Dycal (9,92 kgF) e Temp-Bond NE (9,52 kgF) apresentaram os maiores valores, com diferença estatística para o Temp-Bond (5,96 kgF). Conclusões: Dentre os agentes cimentantes avaliados, os sem eugenol em sua composição (Temp-Bond NE e Dycal) apresentaram melhor desempenho no quesito retenção friccional, quando comparados ao cimento com eugenol, e o fator tempo influenciou significativamente.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold