<?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>0122-7483</journal-id>
<journal-title><![CDATA[Universitas Scientiarum]]></journal-title>
<abbrev-journal-title><![CDATA[Univ. Sci.]]></abbrev-journal-title>
<issn>0122-7483</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ciencias de la Pontificia Universidad Javeriana de Bogotá.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0122-74832017000100031</article-id>
<article-id pub-id-type="doi">10.11144/javeriana.sc22-1.evmf</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Ex vivo model for studying polymicrobial biofilm formation in root canals]]></article-title>
<article-title xml:lang="es"><![CDATA[Modelo ex vivo para el estudio de la formación de biopelícula polimicrobiana en conductos]]></article-title>
<article-title xml:lang="pt"><![CDATA[Efeitos sobre a pesca nos elasmobrânquios no Pacífico colombiano]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Toral]]></surname>
<given-names><![CDATA[Francisco Correa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[Leylin Delgado]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[Carolina Echavarría]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Varona]]></surname>
<given-names><![CDATA[Fátima Serna]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ciodaro]]></surname>
<given-names><![CDATA[Adriana Rodríguez]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortega]]></surname>
<given-names><![CDATA[Hugo Díez]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Salcedo-Reyes]]></surname>
<given-names><![CDATA[Juan Carlos]]></given-names>
</name>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Pontificia Universidad Javeriana  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Pontificia Universidad Javeriana  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2017</year>
</pub-date>
<volume>22</volume>
<numero>1</numero>
<fpage>31</fpage>
<lpage>43</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-74832017000100031&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-74832017000100031&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-74832017000100031&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Endodontic disease has mainly a microbial origin. It is caused by biofilms capable of attaching and surviving in the root canal. Therefore, it is important to study the conditions in which those biofilms grow, develop and colonize the root canal system. However, few studies have used natural teeth as models, which would take into account the root canal anatomical complexity and simulate the clinical reality. In this study, we used human premolar root canals to standardize in vitro biofilm optimal formation conditions for microorganisms such as Enterococcus faecalis, Staphylococcus aureus and Candida albicans. 128 lower premolars underwent canal preparation using K-type files, and were treated with 5.25% sodium hypochlorite and EDTA. Samples were inoculated with microorganisms and incubated for 15, 30, 45, and 60 days under anaerobiosis (CO2 atmosphere) and aerobiosis. Microorganism presence was confirmed by Gram staining, cell culture, and electron microscopy. Exopolysaccharide matrix and microorganism aggregation were observed following 15 days of incubation. Bacterial growth towards the apical third of the root canal and biofilm maturation was detected after 30 days. CO2 atmosphere favored microbial growth the most. In vitro biofilm maturation was confirmed after 30 days of incubation under a CO2 atmosphere for both bacteria and yeast.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La enfermedad endodóntica tiene principalmente un origen microbiano. Es causada por biopelículas capaces de adherirse y sobrevivir en el conducto dental. Por ello es importante estudiar las condiciones en las que estas biopelículas crecen, se desarrollan y colonizan el conducto. Sin embargo, pocos trabajos han utilizado como modelos dientes naturales, que tengan en cuenta la complejidad anatómica de los conductos y simular la realidad clínica. En este estudio se utilizaron conductos de premolares para estandarizar las condiciones óptimas de formación in vitro de la biopelícula de microorganismos como Enterococcus faecalis, Staphylococcus aureus and Candida albicans. Se prepararon los conductos de 128 premolares inferiores usando limas para endodoncia tipo-K, y fueron tratados con 5.25 % hipodorito de sodio y EDTA. Las muestras se inocularon con microrganismos y fueron incubadas por 15, 30, 45 y 60 días en anaerobiosis (atmósfera de CO2) y aerobiosis. La presencia de microorganismos fue confirmada por tinción de Gram, cultivo celular y microscopia electrónica. Se observó una matriz de exopolisacáridos y agregación de microorganismos a los 15 días de incubación. Después de 30 días se detectó crecimiento bacteriano hacia el tercio apical del conducto, así como maduración de la biopelícula. La atmósfera de CO2 fue la que más favoreció el crecimiento microbiano. La maduración in vitro de la biopelícula se confirmó después de 30 días de incubación en atmósfera de CO2 tanto para la bacteria como para el hongo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo A doença endodôntica tem principalmente uma origem microbiana. É causada por biofilmes capazes de se fixar e sobreviver no canal radicular. Portanto, é importante estudar as condições em que esses biofilmes crescem, se desenvolvem e colonizam o sistema de canais radiculares. No entanto, poucos estudos utilizaram dentes naturais como modelo, os quais consideram a complexa anatomia dos canais radiculares e simulam a realidade clínica. Neste estudo, utilizamos canais radiculares pré- molares para padronizar as condições de formação ótima in vitro de biofilme para microrganismos como Enterococcus faecalis, Staphylococcus aureus e Candida abicans. Foram preparados os canais de 128 pré-molares inferiores usando limas odontológicas tipo K, e foram tratados com hipoclorito de sódio 5,25 % e EDTA. As amostras foram inoculadas com microrganismos e incubadas por 15, 30, 45 e 60 dias em anaerobiose (atmosfera de CO2) e aerobiose. A presença de microrganismos foi confirmada por coloração de Gram, cultura celular e microscopia eletrônica. Observou-se uma matriz de exopolisacáridos e um agregado de microrganismos depois de 15 dias de incubação. Após 30 dias de incubação foram detectados crescimento bacteriano no terço apical do canal radicular e maduração do biofilme. A atmosfera de CO2 foi a que mais favoreceu o crescimento microbiano. A maduração in vitro do biofilme foi confirmada depois de 30 dias de incubação em atmosfera de CO2 tanto para bactérias como para fungos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Dental Pulp Diseases]]></kwd>
<kwd lng="en"><![CDATA[Biofilm]]></kwd>
<kwd lng="en"><![CDATA[microbial interactions]]></kwd>
<kwd lng="en"><![CDATA[Enterococcus faecais]]></kwd>
<kwd lng="en"><![CDATA[Staphylococcus aureus]]></kwd>
<kwd lng="en"><![CDATA[Candida albicans]]></kwd>
<kwd lng="es"><![CDATA[Enfermedades de la pulpa dental]]></kwd>
<kwd lng="es"><![CDATA[biopelícula]]></kwd>
<kwd lng="es"><![CDATA[interacciones microbianas]]></kwd>
<kwd lng="es"><![CDATA[Enterococcusfaecalis, Staphylococcus aureus]]></kwd>
<kwd lng="es"><![CDATA[Candida albicans]]></kwd>
<kwd lng="pt"><![CDATA[Doenças da polpa dental]]></kwd>
<kwd lng="pt"><![CDATA[biofilme]]></kwd>
<kwd lng="pt"><![CDATA[interação microbiana]]></kwd>
<kwd lng="pt"><![CDATA[Enterococcus faecalis, Staphylococcus aureus, Candida albicans]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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