<?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>0213-1285</journal-id>
<journal-title><![CDATA[Avances en Odontoestomatología]]></journal-title>
<abbrev-journal-title><![CDATA[Av Odontoestomatol]]></abbrev-journal-title>
<issn>0213-1285</issn>
<publisher>
<publisher-name><![CDATA[Ediciones Avances, S.L.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0213-12852018000500004</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Trastornos temporomandibulares en escolares mexicanos]]></article-title>
<article-title xml:lang="en"><![CDATA[Temporomandibular disorders in Mexican schoolchildren]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz Pérez]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz Peralta]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez Valdez Dulce]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Odontología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Práctica privada  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Tecnológica de México Facultad de Odontología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2018</year>
</pub-date>
<volume>34</volume>
<numero>5</numero>
<fpage>259</fpage>
<lpage>265</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S0213-12852018000500004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S0213-12852018000500004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S0213-12852018000500004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Objetivo: determinar la frecuencia de trastornos temporomandibulares (TTM) en escolares.  Material y Métodos: se incluyeron 981 escolares de tres escuelas primarias públicas, se registraron variables sociodemográficas y evaluación de la articulación temporomandibular con el índice clínico de Helkimo empleado por la Organización Mundial de la Salud, las evaluaciones fueron realizadas por 10 pasantes de odontología previamente capacitados (Kappa interobservador=0.850), la información fue procesada en SPSS V.21.0; para determinar la prevalencia de TTM se utilizó estadística descriptiva, para evaluar la asociación de TTM con el sexo se utilizó X2.  Resultados: la edad promedio fue 8.6±1.6 años, el 54% fueron niñas. 43.4% de la muestra presentó trastornos temporomandibulares; 72.3% con trastorno único, 20.4% con dos TTM y 7.3% más de dos TTM. Los TTM no mostraron asociación con el sexo ni con la edad (p&gt;0.05).  Discusión: El diagnóstico de TTM en escolares es poco frecuente, el crecimiento y desarrollo de los niños puede modificar la frecuencia y severidad de los trastornos. La frecuencia de TTM fue del 43.4%, su distribución fue similar en ambos sexos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Objective: To determine temporomandibular disorders (TMD) frequency in schoolchildren.  Material and methods: Included 891 school children of three elementary public schools, we registered sociodemographic variables and temporomandibular evaluation with Helkimo clinic index used by World Health Organization, all evaluations were performance by ten undergraduates dentist with prior capacitation (interobserver Kappa=0,850) information was processed in SPSS V.21.0; to determine TMD prevalence we used descriptive statistics, to evaluate association between TMD with sex X2 was used.  Results: Mean of age was 8.6±1.6 years, 54% were girls, 43.4% of students had temporomandibular disorders, 72.3% only one disorder, 20.4% two and 7.3% more than two disorders. TMD had no association with sex neither age (p&gt;0.05).  Discussion: TMD diagnostics in schoolchildren is infrequent, frequency and severity of this disorders will be modified by children's growth and development. TMD frequency was 43.3%, its distribution was similar in both sexes.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Articulación temporomandibular]]></kwd>
<kwd lng="es"><![CDATA[trastornos de la articulación temporomandibular]]></kwd>
<kwd lng="es"><![CDATA[niños]]></kwd>
<kwd lng="en"><![CDATA[Temporomandibular joint]]></kwd>
<kwd lng="en"><![CDATA[Temporomandibular disorders]]></kwd>
<kwd lng="en"><![CDATA[children]]></kwd>
</kwd-group>
</article-meta>
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