<?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>1659-0775</journal-id>
<journal-title><![CDATA[Odontología Vital]]></journal-title>
<abbrev-journal-title><![CDATA[Odontología Vital]]></abbrev-journal-title>
<issn>1659-0775</issn>
<publisher>
<publisher-name><![CDATA[Universidad Latina de Costa Rica, Facultad de Odontología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1659-07752019000200031</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Comparación entre los sistemas manual de limas de acero inoxidable y el rotatorio de limas de níquel titanio, en la conformación de conductos radiculares curvos in vitro]]></article-title>
<article-title xml:lang="en"><![CDATA[Comparison between the manual system of stainless steel files and the rotating system of nickel titanium files in the conformation of curved radicular ducts in vitro]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quiroz-Málaga]]></surname>
<given-names><![CDATA[Johanna Elizabeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramos-Torres]]></surname>
<given-names><![CDATA[Wilfredo Fidel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguirre-Siancas]]></surname>
<given-names><![CDATA[Elias Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Católica los Ángeles de Chimbote  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Católica los Ángeles de Chimbote  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Científica del Sur  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Peru</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<numero>31</numero>
<fpage>31</fpage>
<lpage>36</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1659-07752019000200031&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1659-07752019000200031&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1659-07752019000200031&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción:  Estudio experimental donde se procuró comparar el efecto del sistema manual y del rotatorio sobre la conformación de conductos curvos. Metodología: Una muestra de 40 raíces mesiales de primeras molares inferiores fue aleatorizada en dos grupos iguales: grupos sistema manual de limas K y sistema rotatorio FGK Race®. Se comparó el radio de la curvatura final vs. el inicial mediante el programa Autocat 2015. Se empleó la prueba t con significancia de 0,05. Resultados: El radio de la curvatura varió de manera significativa, tanto para sistema manual como para el rotatorio FGK Race® (p=0,0001 y p=0,0013, respectivamente). Además, el sistema manual produjo mayor variación en el radio de la curvatura al compararlo con el sistema rotatorio 2,23 mm vs. 1,27 mm respectivamente; p=0,13. Conclusiones: Ambos sistemas produjeron modificación en la conformación de los conductos mesiales; sin embargo, en la comparación entre ambos dichas diferencias no fueron significativas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: An experimental study was carried out to compare the effect of the manual system and the rotary system on the conformation of curved conduits. Methodology: A sample of 40 mesial roots of lower first molars was randomized into two equal groups: group manual system of K-files and group rotary system FGK Race®. The radius of the final curvature vs. the initial curvature was compared using the Autocat 2015 program. The t-test with a significance of 0.05 was used. Results: The curvature radius varied significantly for both the manual system and the rotary FGK Race® (p = 0.0001 and p = 0.0013, respectively). In addition, the manual system produced greater variation in the radius of the curvature when compared to the rotary system 2.23mm vs. 1.27mm respectively; p = 0.13. Conclusion: Both systems produced modification on the conformation of the conduits of the mesial roots; however, in the comparison between both systems said differences were not significant.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Sistema endodóntico]]></kwd>
<kwd lng="es"><![CDATA[manual de limas K]]></kwd>
<kwd lng="es"><![CDATA[sistema endodóntico FKG Race®]]></kwd>
<kwd lng="es"><![CDATA[conductos curvos]]></kwd>
<kwd lng="es"><![CDATA[radio de curvatura]]></kwd>
<kwd lng="es"><![CDATA[primeras molares inferiores]]></kwd>
<kwd lng="en"><![CDATA[Manual endodontic system]]></kwd>
<kwd lng="en"><![CDATA[FKG Race® endodontic system]]></kwd>
<kwd lng="en"><![CDATA[curved canals]]></kwd>
<kwd lng="en"><![CDATA[radius of curvature]]></kwd>
<kwd lng="en"><![CDATA[first lower molars]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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