<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0120-971X</journal-id>
<journal-title><![CDATA[CES Odontología]]></journal-title>
<abbrev-journal-title><![CDATA[CES odontol.]]></abbrev-journal-title>
<issn>0120-971X</issn>
<publisher>
<publisher-name><![CDATA[Universidad CES - Facultad de Odontología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-971X2021000100044</article-id>
<article-id pub-id-type="doi">10.21615/cesodon.34.1.5</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Resistencia al impacto de dos acrílicos convencionales y dos de alto impacto para prótesis total]]></article-title>
<article-title xml:lang="en"><![CDATA[Impact resistance of two conventional and two high impact acrylics for dentures]]></article-title>
<article-title xml:lang="pt"><![CDATA[Resistência ao impacto de dois acrílicos convencionais e dois acrílicos de alto impacto para próteses totais]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flórez-Calao]]></surname>
<given-names><![CDATA[Juan-Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Suárez-Fajardo]]></surname>
<given-names><![CDATA[Ingrid-Giovana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz-González]]></surname>
<given-names><![CDATA[Alberto-Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Colombia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>34</volume>
<numero>1</numero>
<fpage>44</fpage>
<lpage>51</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-971X2021000100044&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-971X2021000100044&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-971X2021000100044&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción y objetivo: las resinas acrílicas son los materiales idóneos para la elaboración prótesis totales, sin embargo, las caídas o golpes los hace susceptibles de fracturas. Conocer las propiedades y limitaciones de los acrílicos en nuestro entorno, nos permite realizar tratamientos con los mejores materiales. El objetivo de este estudio fue comparar la resistencia al impacto de dos acrílicos convencionales y dos de alto impacto para bases protésicas.  Materiales y métodos: se realizaron 40 barras en cera para base para ser enmufladas de acuerdo con especificaciones de cuatro marcas de acrílicos (n=10), Lucitone199®, Masterdent acrylic resin, Veracril alto impacto® y convencional. La resistencia impacto se evaluó mediante la prueba de Charpy (Máquina ITC-XJU-22), con masa de péndulo de 0.237 Kg y fuerza de impacto de 1J. se realizó análisis estadístico por ANOVA a una vía y prueba de tukey.  Resultados: los valores de resistencia al impacto fueron 16.5, 10.8, 9.3 y 5.9 KJ/m2 para Lucitone199®, Veracril alto impacto®, Veracril convencional® y Masterdent acrylic resin.  Conclusiones: con las limitaciones de esta investigación, los acrílicos de alto impacto se pueden considerar como una alternativa más viable para la elaboración de prótesis totales ante los acrílicos convencionales, en busca de disminuir el riesgo de fracturas por accidentes o cargas repentinas de impacto.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction and objective: acrylic resins are the ideal materials for the elaboration of dentures and removable prostheses, although the falls or blows make them susceptible to fractures. Knowing the properties and limitations of acrylics in our environment, allows us to carry out treatments with the best materials. The objective of this study was to compare the impact resistance of two conventional and two high impact acrylics for prosthetic bases.  Materials and methods: 40 bars were made in base-wax and processed in muffles according to specifications of four trademarks of acrylics (n=10), Lucitone199®, Masterdent acrylic resin®, Veracril alto impacto® and convencional®. The impact resistance was evaluated by the Charpy test (Machine ITC-XJU-22), with a pendulum mass of 0.237 Kg and an impact force of 1J. One-way ANOVA and tukey test were performed for statistical analysis was performed.  Results: the impact resistance values were 16.5, 10.8, 9.3 and 5.9 KJ / m2 for Lucitone199®, Veracril alto impacto®, Veracril convencional® and Masterdent acrylic resin®.  Conclusions: with the limitations of this investigation, high impact acrylics can be considered as a more viable alternative for the elaboration of dentures compared to conventional acrylics, in order to reduce the risk of fractures due to accidents or sudden impact loads.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Introdução y objetivo: as resinas acrílicas são os materiais ideais para a elaboração de próteses totais, porém as quedas ou golpes os tornam suscetíveis a fraturas. Conhecer as propriedades e limitações dos acrílicos em nosso ambiente, permite realizar tratamentos com os melhores materiais.. O objetivo deste estudo foi comparar a resistência ao impacto de d ois acrílicos convencionais e dois de alto impacto para bases protéticas.  Materiais e métodos: foram feitas 40 barras de cera para que a base seja silenciada de acordo com as especificações de quatro marcas de acrílicos (n=10), Lucitone199®, resina acrílica Masterdent, Veracril high impact® e convencional. A resistência ao impacto foi avaliada pelo teste de Charpy (Máquina ITC-XJU-22), com uma massa pendular de 0.237 kg e uma força de impacto de 1J. Foi realizada análise estatística ANOVA unidirecional e teste de tukey.  Resultados: os valores de resistência ao impacto foram de 16.5, 10.8, 9.3 e 5.9 KJ/m2 para a resina acrílica Lucitone199®, Veracril high impact®, Veracril convencional® e Masterdent.  Conclusões: com as limitações desta investigação, os acrílicos de alto impacto podem ser considerados uma alternativa mais viável para a elaboração de próteses totais em comparação aos acrílicos convencionais, a fim de reduzir o risco de fraturas devido a acidentes ou cargas de impacto repentinas.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Bases para dentadura]]></kwd>
<kwd lng="es"><![CDATA[resina acrílica]]></kwd>
<kwd lng="es"><![CDATA[prótesis total]]></kwd>
<kwd lng="es"><![CDATA[prueba de materiales]]></kwd>
<kwd lng="es"><![CDATA[acrílico]]></kwd>
<kwd lng="en"><![CDATA[Denture bases]]></kwd>
<kwd lng="en"><![CDATA[Acrylic resins]]></kwd>
<kwd lng="en"><![CDATA[Denture]]></kwd>
<kwd lng="en"><![CDATA[Materials testing]]></kwd>
<kwd lng="en"><![CDATA[Acrylic.]]></kwd>
<kwd lng="pt"><![CDATA[Bases de próteses]]></kwd>
<kwd lng="pt"><![CDATA[resina acrílica]]></kwd>
<kwd lng="pt"><![CDATA[prótese total]]></kwd>
<kwd lng="pt"><![CDATA[teste de materiais]]></kwd>
<kwd lng="pt"><![CDATA[acrílico]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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