<?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>0188-9532</journal-id>
<journal-title><![CDATA[Revista mexicana de ingeniería biomédica]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. ing. bioméd]]></abbrev-journal-title>
<issn>0188-9532</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Ingeniería Biomédica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-95322021000200110</article-id>
<article-id pub-id-type="doi">10.17488/rmib.42.2.12</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Evaluation of Parameters in PLA and PCL Scaffolds to be Used in Cartilaginous Tissues]]></article-title>
<article-title xml:lang="es"><![CDATA[Evaluación de Parámetros en Andamios de PLA y PCL a ser Utilizados en Tejidos Cartilaginosos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cea]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Donoso]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sérandour]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alegría]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Austral de Chile Facultad de Ciencias de la Ingeniería Escuela de Ingeniería Civil Mecánica]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Austral de Chile Facultad de Ciencias de la Ingeniería Instituto de Diseño y Métodos Industriales]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Austral de Chile Facultad de Ciencias de la Ingeniería ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Austral de Chile Facultad de Ciencias de la Ingeniería Centro de Docencia de Ciencias Básicas para Ingeniería]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Chile</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>42</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-95322021000200110&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-95322021000200110&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-95322021000200110&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The scopes of medical treatments involving organ transplants and implants for chronic problems and trauma have changed significantly. However, these procedures are subject to multiple problems. Recently, tissue engineering has been used to address them. The present study is framed in the field of tissue engineering, particularly cartilage tissue, and proposes the evaluation of geometric and impression parameters for the manufacture of scaffolds as a basis for the growth of cells through 3D impression techniques. These scaffolds are highly porous three-dimensional supports that house donated or himself patient cells, providing a surface where the cells can adhere and proliferate. In the methodology, geometric and pore size variables are defined for scaffolding modeling by using CAD techniques and standardization of the printing process with standard 3D printers and accessible materials. The results showed that material flow, printing temperature, printing speed and ventilation are the most influential parameters in the manufacture of scaffolds. Additionally, it was found micrometric variations between the modeled design and the printing result. These scaffolds will subsequently be subjected to in vitro cell culture evaluating the adherence, division, and proliferation of the cells.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Los alcances de los tratamientos médicos que involucran trasplantes e implantes de órganos para problemas crónicos y traumatismos han cambiado significativamente. No obstante, dichos procedimientos están sujetos a múltiples problemáticas. Recientemente, se ha recurrido a la ingeniería de tejidos, para abordarlos. El presente estudio se enmarca en el campo de la ingeniería de tejidos, particularmente de tejido cartilaginoso, y plantea la evaluación de parámetros geométricos y de impresión para la fabricación de andamios (scaffolds) como base para el crecimiento de células a través de técnicas de impresión 3D. Dichos andamios son soportes tridimensionales altamente porosos que albergan células, pudiendo ser estas del propio paciente o donadas, proporcionando una superficie donde estas se adhieran y proliferen. En la metodología se definen variables geométricas y de tamaño de poro para modelación de los andamios mediante CAD y estandarización del proceso de impresión con impresoras 3D estándar y materiales accesibles. Los resultados mostraron que el flujo de material, la temperatura de impresión, la velocidad de impresión y la ventilación son los parámetros más influyentes en la fabricación de andamios. Adicionalmente, se encontraron variaciones micrométricas entre el diseño modelado y el resultado de la impresión. Estos andamios, posteriormente, serán sometidos a cultivo celular in vitro evaluándose la adherencia, división y proliferación de las células.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Scaffold]]></kwd>
<kwd lng="en"><![CDATA[Cartilaginous Tissue]]></kwd>
<kwd lng="en"><![CDATA[3D Printing]]></kwd>
<kwd lng="es"><![CDATA[Andamio]]></kwd>
<kwd lng="es"><![CDATA[Tejido Cartilaginoso]]></kwd>
<kwd lng="es"><![CDATA[Impresión 3D]]></kwd>
</kwd-group>
</article-meta>
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