<?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>0034-7507</journal-id>
<journal-title><![CDATA[Revista Cubana de Estomatología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cubana Estomatol]]></abbrev-journal-title>
<issn>0034-7507</issn>
<publisher>
<publisher-name><![CDATA[Editorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0034-75072021000200002</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Caries en primeros molares permanentes y factores asociados a esta en escolares de Acapulco]]></article-title>
<article-title xml:lang="en"><![CDATA[Caries in permanent first molars and associated factors with its in schoolchildren from Acapulco]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyna Rosales]]></surname>
<given-names><![CDATA[Karina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Paredes Solís]]></surname>
<given-names><![CDATA[Sergio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flores Moreno]]></surname>
<given-names><![CDATA[Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rios Rivera]]></surname>
<given-names><![CDATA[Claudia Erika]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Paredes Juárez]]></surname>
<given-names><![CDATA[Sergio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Andersson]]></surname>
<given-names><![CDATA[Neil]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Guerrero Centro de Investigación de Enfermedades Tropicales ]]></institution>
<addr-line><![CDATA[ Acapulco de Juárez]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de McGill Departamento de Medicina Familiar ]]></institution>
<addr-line><![CDATA[Montreal ]]></addr-line>
<country>Canada</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>58</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0034-75072021000200002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0034-75072021000200002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0034-75072021000200002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: La caries es una de las enfermedades bucodentales más frecuentes y, por ser las primeras en emerger, los primeros molares permanentes son las piezas más susceptibles a esta afección.  Objetivo: Estimar la prevalencia de caries y factores asociados a esta en los primeros molares permanentes en escolares de segundo grado de primaria.  Métodos: Estudio transversal, en estudiantes de segundo grado en 17 de 67 escuelas públicas de Acapulco, Guerrero. Un cuestionario autoadministrado se utilizó para obtener datos sociodemográficos y hábitos de higiene dental. La caries y la presencia de placa dentobacteriana se midieron a través de índices epidemiológicos, el CPOD (diente cariado, obturado y perdido) y el O&#8217;Leary. Se estimó la razón de momios e intervalo de confianza de 95 %, ajustada por conglomerado, como medida de la fuerza de asociación mediante análisis multivariado.  Resultados: Se revisaron 3332 primeros molares permanentes, el 21 % tuvo caries, el 6 % tuvo obturaciones y el 1 % ya se había extraído. El índice CPOD de caries grupal fue 0,27. Cinco factores estuvieron asociados a la caries de los primeros molares permanentes: higiene dental deficiente (RMa = 2,87), técnica de cepillado dental inadecuada (RMa = 1,70), tomar alguna bebida dulce antes de ir a dormir (RMa = 1,68), visitar al dentista (RMa = 0,67) y aplicación de flúor (RMa = 0,61).  Conclusiones: La prevalencia de caries en los primeros molares permanentes fue 21 % dentro del rango reportado en otros estudios. Fueron identificados cinco factores asociados a la caries: higiene dental deficiente, técnica de cepillado inadecuado, consumo de azúcares antes de dormir, visitas al dentista y aplicación de flúor. Estos factores orientan sobre qué medidas preventivas se deben promover en los escolares para la preservación de sus piezas dentales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Caries is the most frequent oral disease and the first permanent molars are very susceptible to this condition because they are the first teeth to emerge.  Objective: To estimate the prevalence of caries its associated factors in the first permanent molars in second grade primary school children.  Methods: A cross-sectional study was carried out in second grade students in 17 out of 67primary public schools in Acapulco, Guerrero. We applied a self-administered questionnaire to obtain sociodemographic data and dental hygiene habits. Caries and the presence of dentobacterial plaque were measured through epidemiological indices, CPOD (decayed, blocked and lost tooth) and O'Leary index. The odds ratio and 95% confidence interval, adjusted by cluster, were estimated as a measure of strength of association through multivariate analysis.  Results:  We reviewed 3 332 permanent first molars, 21% had cavities, 6% had seals and 1% had already been removed. The CPOD index of group caries was 0,27. We found five factors associated with caries of the first permanent molars: deficient dental hygiene (RMa=2,87), inadequate tooth brushing technique (RMa=1,70), drinking a sweet drink before bedtime (RMa=1,68), visiting the dentist (RMa=0,67) and fluoride application (RMa=0,61).  Conclusions: Prevalence of caries in the first permanent molars was 21%, within the range reported in other studies. Five factors associated with caries were identified: poor dental hygiene, inadequate brushing technique, consumption of sugars before going to sleep, visits to the dentist and application of fluoride. These factors guide what preventive measures should be promoted in schoolchildren for the preservation of their teeth.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[caries]]></kwd>
<kwd lng="es"><![CDATA[dentición permanente]]></kwd>
<kwd lng="es"><![CDATA[salud escolar]]></kwd>
<kwd lng="en"><![CDATA[caries]]></kwd>
<kwd lng="en"><![CDATA[permanent dentition]]></kwd>
<kwd lng="en"><![CDATA[scholar health]]></kwd>
</kwd-group>
</article-meta>
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