<?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>1870-199X</journal-id>
<journal-title><![CDATA[Revista odontológica mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Odont. Mex]]></abbrev-journal-title>
<issn>1870-199X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Odontología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-199X2019000100023</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Identificación molecular de bacterias en salud y enfermedad periodontal]]></article-title>
<article-title xml:lang="en"><![CDATA[Molecular identification of bacteria in healthy and diseased periodontium]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Corona Martínez]]></surname>
<given-names><![CDATA[José Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Soto]]></surname>
<given-names><![CDATA[Elvia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez Monroy]]></surname>
<given-names><![CDATA[Virginia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Secretaría de la Defensa Nacional Centro Militar de Ciencias de la Salud Escuela Militar de Graduados de Sanidad]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Politécnico Nacional Escuela Nacional de Medicina y Homeopatía Laboratorio de Biomedicina Molecular I]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Politécnico Nacional Secretaría de Investigación y Postgrado ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2019</year>
</pub-date>
<volume>23</volume>
<numero>1</numero>
<fpage>23</fpage>
<lpage>30</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-199X2019000100023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-199X2019000100023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-199X2019000100023&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El estudio de la microbiota bacteriana asociada con periodontitis es esencial para desarrollar herramientas de diagnóstico y eficacia en las terapias, por esta razón el objetivo de este estudio fue identificar bacterias asociadas con periodontitis. Nosotros amplificamos el gen 16S rARN por reacción en cadena de polimerasa (PCR) y secuenciamos para investigar y comparar muestras subgingivales obtenidas de individuos sanos y pacientes con periodontitis moderada y severa. Identificamos Stenotrophomonas maltophilia, Porphyromonas gingivalis, Pseudomonas sp., Fusobacterium nucleatum, Haemophilus sp., Aggregatibacter sp. y Prevotella intermedia. P. gingivalis y F. nucleatum se asociaron con ambas periodontitis y Aggregatibacter sp. se asoció con periodontitis severa. Los resultados presentados aquí podrían contribuir en la toma de decisiones clínicas de la periodontitis.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The study of bacterial microbiota associated with periodontitis is essential to develop effective diagnostic tools and therapies. Hence, the aim of this study was to identify the bacteria associated with periodontitis. We used 16S rRNA gene amplification by polymerase chain reaction (PCR) and sequencing to identify and compare 80 subgingival samples from patients with healthy periodontium and patients with severe and moderate periodontitis. We identified the following bacteria: Stenotrophomonas maltophilia, Porphyromonas gingivalis, Pseudomonas sp., Fusobacterium nucleatum, Haemophilus sp., Aggregatibacter sp., and Prevotella intermedia. P. gingivalis and F. nucleatum were associated with both moderate and severe periodontitis, and Aggregatibacter sp. was associated with severe periodontitis. The results of this research can be useful in clinical decision-making for treatment of patients with periodontitis.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Periodontitis]]></kwd>
<kwd lng="es"><![CDATA[PCR]]></kwd>
<kwd lng="es"><![CDATA[secuenciación]]></kwd>
<kwd lng="es"><![CDATA[ARN ribosomal 16S]]></kwd>
<kwd lng="en"><![CDATA[Periodontitis]]></kwd>
<kwd lng="en"><![CDATA[PCR]]></kwd>
<kwd lng="en"><![CDATA[sequencing]]></kwd>
<kwd lng="en"><![CDATA[16S ribosomal RNA]]></kwd>
</kwd-group>
</article-meta>
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