<?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>S1870-199X2018000100015</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Factores sociodemográficos y clínicos asociados a la supervivencia de dientes tratados endodónticamente por estudiantes de pregrado. Medellín (Colombia)]]></article-title>
<article-title xml:lang="en"><![CDATA[Sociodemographic and clinical factors associated to survival of endodontically treated teeth conducted by undergraduate dentistry students. Medellin (Colombia)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pineda-Vélez]]></surname>
<given-names><![CDATA[Eliana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Madrid-Gutiérrez]]></surname>
<given-names><![CDATA[Luis Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cumplido-Mendoza]]></surname>
<given-names><![CDATA[Mario Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Agudelo-Suárez]]></surname>
<given-names><![CDATA[Andrés A]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Antioquia U de A Facultad de Odontología ]]></institution>
<addr-line><![CDATA[ Medellín]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2018</year>
</pub-date>
<volume>22</volume>
<numero>1</numero>
<fpage>15</fpage>
<lpage>24</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-199X2018000100015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-199X2018000100015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-199X2018000100015&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo: Determinar los factores sociodemográficos y clínicos asociados con la supervivencia de dientes tratados endodónticamente por estudiantes de pregrado de la Facultad de Odontología-Universidad de Antioquia (Medellín, Colombia), durante el periodo 2007-2011.  Material y métodos: Estudio longitudinal retrospectivo con análisis de supervivencia por medio de las historias clínicas según los criterios de inclusión y posteriormente se examinaron a los pacientes. La supervivencia global se calculó utilizando el análisis de Kaplan-Meier, y las curvas se compararon a través del log rank test. Para el análisis multivariado se realizó el modelo de riesgos proporcionales de Cox, obteniendo la medida de asociación HR ajustada, con su intervalo de confianza al 95%.  Resultados: Las variables sociodemográficas y clínicas con asociación estadísticamente significativa fueron nivel de educación, tipo de afiliación a salud, diagnóstico inicial y tipo de restauración. Los dientes que permanecen después de un tratamiento endodóntico durante los primeros tres años es del 78% y los que sobreviven por más de seis años es del 57%. La media de sobrevida de los dientes en los pacientes atendidos es de 1,959 días (error estándar de 66.9 días). El modelo multivariado mostró que la velocidad de pérdida del diente fue mayor en multirradiculares (HR 2.38; IC 95% 1.23-4.60) y en aquellos con diagnóstico inicial de absceso apical agudo (HR 27.96; IC 95% 1.84-423.09).  Conclusión:  Se identificaron factores sociodemográficos y clínicos asociados con la supervivencia de los dientes tratados endodónticamente, lo que permite establecer sistemas de vigilancia epidemiológica para evaluar la calidad de la atención odontológica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective: To determine clinical and sociodemographic factors associated to survival of endodontically treated teeth. The present study was conducted by undergraduate students of the Faculty of Dentistry (Medellin, Colombia) during the period 2007-2011.  Material and methods: Retrospective, longitudinal study with survival analysis through consultation with clinical histories according to inclusion criteria, and, further ahead, patient examination. Global survival was calculated with the use of Kaplan-Meier analysis, and curves were compared with log rank test. Cox proportional risk model was used for multivariate analysis, adjusted HR association was obtained with a 95% confidence interval.  Results:  Sociodemographic and clinical variables with statistically significant association were: education level, type of health affiliation, initial diagnosis and restoration type. Teeth remaining for three years after endodontic treatment were 78%, whereas 57% survived for over six years. Tooth survival mean in treated patients was 1,959 days (standard error: 66.9 days). Multivariate model showed that tooth loss speed was greater in multi-rooted teeth (HR 2.38, CI 95% 1.23-4.60) as well as in teeth with initial diagnosis of acute apical abscess (HR 27.96, CI 95%, 1.84-423.09).  Conclusion:  Clinical and sociodemographic factors were identified, associated to survival of endodontically treated teeth, this allowed to establish epidemiological monitoring systems in order to assess dental care quality.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Endodoncia]]></kwd>
<kwd lng="es"><![CDATA[extracción dental]]></kwd>
<kwd lng="es"><![CDATA[estudios de seguimiento]]></kwd>
<kwd lng="es"><![CDATA[análisis de supervivencia]]></kwd>
<kwd lng="en"><![CDATA[Endodontics]]></kwd>
<kwd lng="en"><![CDATA[tooth extraction]]></kwd>
<kwd lng="en"><![CDATA[follow-up studies]]></kwd>
<kwd lng="en"><![CDATA[survival analysis]]></kwd>
</kwd-group>
</article-meta>
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