<?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>S1659-07752017000100043</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Extracciones de primeros premolares simétricos en paciente con apiñamiento severo: Reporte de un caso.]]></article-title>
<article-title xml:lang="en"><![CDATA[Symmetrical first premolars extractions in patients with severe crowding: Case report]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nassi Ribak]]></surname>
<given-names><![CDATA[Ruth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Estudios Superiores de Ortodoncia DF  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Panamá</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<numero>26</numero>
<fpage>43</fpage>
<lpage>52</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1659-07752017000100043&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1659-07752017000100043&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1659-07752017000100043&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Cuando se presenta apiñamiento severo, en muchas ocasiones la ubicación que adoptan las estructuras dentarias dificultan el tratamiento, por lo cual se sugiere extracciones asimétricas para permitir de esta manera un tratamiento menos prolongado y con resultados satisfactorios. En este artículo se reporta un caso de biprotrusión dentaria tratado con extracciones de 4 premolares, en una paciente femenina de 20 años y 6 meses, Clase II esquelética, hiperdivergente, con un patrón dolicofacial, Clase III molar bilateral, Clase I canina bilateral, línea media superior coincidente e inferior 4 mm desviada a la izquierda, y no presenta hábitos. En los objetivos de tratamiento se planteó: extracciones asimétricas de primeros premolares superiores e inferiores, corregir el apiñamiento maxilar y mandibular, obtener líneas medias coincidentes, obtener la Clase I molar bilateral, mantener la Clase I canina bilateral. Se logró corregir el apiñamiento severo con una forma de arco adecuada.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In cases of severe crowding, many times the location of dental structures impede treatment, so asymmetrical extractions is suggested to allow a less prolonged treatment with satisfactory results. This article presents a case of dental extractions biprotrution treated with 4 premolars reported, a case of 20 years and 6 months old female patient, skeletal Class II, hyperdivergent, with bilateral dolichofacial pattern, molar Class III bilateral, canine Class I bilateral, upper midline coincident and lower midline 4mm left deviated, is reported and no habits. The goals of treatment are proposed: a symmetric extractions of first premolars upper and lower, correct the maxillary and mandibular crowding, achieve midlines, and obtain bilateral Class I molar and maintain bilateral Class I canine. It was possible to correct severe crowding with a suitable form of arch.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Biprotrusión]]></kwd>
<kwd lng="es"><![CDATA[extracciones simétricas]]></kwd>
<kwd lng="es"><![CDATA[hiperdivergente]]></kwd>
<kwd lng="es"><![CDATA[dolicofacial]]></kwd>
<kwd lng="es"><![CDATA[apiñamiento severo]]></kwd>
<kwd lng="en"><![CDATA[Biprotrution]]></kwd>
<kwd lng="en"><![CDATA[symmetric extraction]]></kwd>
<kwd lng="en"><![CDATA[hyperdivergent]]></kwd>
<kwd lng="en"><![CDATA[dolichofacial]]></kwd>
<kwd lng="en"><![CDATA[severe crowding]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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