<?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>S0120-971X2020000200072</article-id>
<article-id pub-id-type="doi">10.21615/cesodon.33.2.7</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Resistencia friccional entre brackets cerámicos y brackets de autoligado usando un análisis de elementos finitos]]></article-title>
<article-title xml:lang="en"><![CDATA[Frictional resistance between conventional ceramic brackets and self-ligating ceramic brackets using a finite element analysis]]></article-title>
<article-title xml:lang="pt"><![CDATA[Resistência ao atrito entre braquetes cerâmicos e braçadeiras autoligáveis usando análise de elementos finitos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Gómez]]></surname>
<given-names><![CDATA[Sandra Liliana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montoya-Góez]]></surname>
<given-names><![CDATA[Yesid]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Flórez]]></surname>
<given-names><![CDATA[Diana Marcela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Restrepo-Narváez]]></surname>
<given-names><![CDATA[Leidy Marcela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ardila]]></surname>
<given-names><![CDATA[Carlos Martín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Antioquia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Escuela de Ingeniería de Antioquia  ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Antioquia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Antioquia  ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<volume>33</volume>
<numero>2</numero>
<fpage>72</fpage>
<lpage>85</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-971X2020000200072&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-971X2020000200072&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-971X2020000200072&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción y objetivo:  La fricción en la ortodoncia se produce por contacto directo entre el bracket, el alambre y la ligadura. La fricción reduce la eficiencia en los tratamientos de ortodoncia. Esta investigación comparó la resistencia a la fricción entre los brackets cerámicos convencionales y los brackets cerámicos de autoligado pasivos utilizando un método de elementos finitos (MEF).  Materiales y métodos:  Se realizó un total de 810 deslizamientos, combinando brackets cerámicos convencionales y autoligados, y alambres de ortodoncia de acero inoxidable, níquel-titanio y de la aleación &#946;-titanio de 0.016 pulgadas, 0.017x0.025 pulgadas y 0.019 x0.025 pulgadas. La media máxima de resistencia a la fricción estática (MRF) se comparó entre las diferentes combinaciones de brackets, alambre, ligadura y angulación del bracket de 0 °, 7 ° y 13 °.  Resultados:  Las variables con el comportamiento de fricción más alto fueron 13 °, aleación &#946; titanio, 0.017x0.025 pulgadas, y brackets cerámicos convencionales con ligaduras elásticas.  Conclusión:  MEF es una alternativa adecuada para la predicción de la MRF en varias combinaciones de brackets, alambres, ligaduras y angulaciones. El método permitió definir una menor resistencia a la fricción para los brackets de autoligado, así como una relación directa entre el aumento del ángulo y el área de contacto entre el bracket y el alambre, con valores más altos de resistencia al deslizamiento. Se estableció que un alambre de mayor calibre no implica un área de mayor contacto con el bracket.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction and objective:  Friction in orthodontics is produced by direct contact between the bracket, the wire, and the ligature. Friction reduces efficiency in orthodontic treatments. This research aims to compare the frictional resistance between conventional ceramic brackets and passive self-ligating ceramic brackets using a finite element method (FEM).  Materials and methods:  A total of 810 slidings were performed, combining conventional and self-ligating ceramic brackets, and stainless steel, nickel-titanium, and b-titanium alloy orthodontic wires of 0.016inch, 0.017x0.025inch, and 0.019x0.025inch. The maximum static frictional resistance (MSFR) mean was compared between the different brackets, wire, ligature, and bracket angulation combinations of 0°, 7°, and 13°.  Results:  The variables with the highest frictional behavior were 13°, b-titanium alloy, 0.017x0.025inch, and conventional ceramic brackets with an elastic ligatures.  Conclusion:  FEM is an adequate alternative for the prediction of MSRF in a various brackets, wire, ligating, and angulation combinations. The method allowed defining lower frictional resistance for self-ligating brackets, as well as a direct relationship between the increase in the angle and contact area between bracket and wire, with higher values of sliding resistance. It was established that a larger wire size does not imply a higher area of contact with the bracket.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Introdução e objetivo:  O atrito na ortodontia é produzido pelo contato direto entre braquetes, fios e ligaduras. O atrito reduz a eficiência em tratamentos ortodônticos. Esta pesquisa tem como objetivo comparar a resistência ao atrito entre braquetes cerâmicos convencionais e braquetes cerâmicos autoligáveis paacero inoxidableivos usando um método de elementos finitos (MEF).  Materiais e métodos:  Foram realizados 810 deslizamentos de terra, combinando braquetes de cerâmica convencionais e autoligáveis e fios ortodônticos de aço inoxidável, liga de níquel-titânio e &#946;-titânio em 0,016 polegadas, 0,017 x 0,025 polegadas e 0,019 0,025 polegadas. A máxima resistência média ao atrito estático (MRF) foi comparada entre as diferentes combinações de braquetes, fios, ligaduras e angulações de braquetes de 0 °, 7 ° e 13 °.  Resultados:  As variáveis com maior comportamento de atrito foram 13 °, liga &#946;-titânio, 0,017x0,025 polegadas e braquetes cerâmicos convencionales com ligadura elástica.  Conclusão:  MEF é uma alternativa adequada para previsão de MRF em várias combinações de braquetes, fios, ligaduras e angulações. O método permitiu definir uma menor resistência ao atrito para braquetes autoligáveis, bem como uma relação direta entre o aumento do ângulo e a área de contato entre os braquetes e o fio, com maiores valores de resistência ao escorregamento. Foi estabelecido que um tamanho de cabo maior não implica uma área de contato mais alta com o suporte.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[fricción de ortodoncia]]></kwd>
<kwd lng="es"><![CDATA[brackets de ortodoncia]]></kwd>
<kwd lng="es"><![CDATA[cerámica]]></kwd>
<kwd lng="es"><![CDATA[aleaciones dentales]]></kwd>
<kwd lng="es"><![CDATA[análisis de elementos finitos]]></kwd>
<kwd lng="en"><![CDATA[orthodontic friction]]></kwd>
<kwd lng="en"><![CDATA[orthodontic brackets]]></kwd>
<kwd lng="en"><![CDATA[ceramic]]></kwd>
<kwd lng="en"><![CDATA[dental alloys]]></kwd>
<kwd lng="en"><![CDATA[finite element analysis]]></kwd>
<kwd lng="pt"><![CDATA[fricção ortodôntica]]></kwd>
<kwd lng="pt"><![CDATA[braquetes ortodônticos]]></kwd>
<kwd lng="pt"><![CDATA[cerâmica]]></kwd>
<kwd lng="pt"><![CDATA[ligas dentárias]]></kwd>
<kwd lng="pt"><![CDATA[análise de elementos finitos]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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