<?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>1816-8949</journal-id>
<journal-title><![CDATA[Anales de la Facultad de Ciencias Médicas (Asunción)]]></journal-title>
<abbrev-journal-title><![CDATA[An. Fac. Cienc. Méd. (Asunción)]]></abbrev-journal-title>
<issn>1816-8949</issn>
<publisher>
<publisher-name><![CDATA[EFACIM. Editorial de la Facultad de Ciencias Médicas - Universidad Nacional de Asunción]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1816-89492022000300099</article-id>
<article-id pub-id-type="doi">10.18004/anales/2022.055.03.99</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto de la expansión ósea maxilar en la vía aérea nasofaríngea: Una revisión bibliográfica]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of the maxillary bone expansion on the nasopharyngeal airway. A bibliographic review]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hodges Muñoz]]></surname>
<given-names><![CDATA[Christian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera Zavala]]></surname>
<given-names><![CDATA[Rodrigo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Mayor  ]]></institution>
<addr-line><![CDATA[Santiago ]]></addr-line>
<country>Chile</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>55</volume>
<numero>3</numero>
<fpage>99</fpage>
<lpage>104</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_arttext&amp;pid=S1816-89492022000300099&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_abstract&amp;pid=S1816-89492022000300099&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_pdf&amp;pid=S1816-89492022000300099&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  Uno de los tratamientos indicados para la deficiencia maxilar transversal es la expansión maxilar rápida (REM). El presente artículo trata sobre la terapia REM y muestra, a partir de una revisión bibliográfica, los diversos beneficios que esta puede brindar al paciente y los cambios que puede generar en su anatomía.  Objetivos:  Abordar el efecto de la terapia REM sobre la vía aérea nasofaríngea. También describir, en base a evidencia científica, los cambios que produce en la morfología y resistencia sobre la vía aérea faríngea. Esto mediante distintos métodos de estudios disponibles actualmente.  Materiales y métodos:  Se realizó una búsqueda bibliográfica en las bases de datos: PubMed, Clinicalkey y Epistemonikos. Se seleccionaron trabajos publicados en los últimos 8 años en adelante. De un universo total de 77 publicaciones, fueron seleccionados 12 estudios para esta revisión. Se excluyeron estudios en los cuales se realizaban acciones clínicas que escapan al tratamiento ortopédico. También se excluyeron tratamientos realizados para mejorar la vía aérea, basados en el tratamiento ortopédico del crecimiento mandibular.  Resultados:  En los estudios realizados mediante radiografías cefalométricas se obtuvo un aumento significativo (p &lt;0.05) en el espacio de la vía aérea nasofaríngea, en particular en las medidas AD2 y AD-PtV, después del tratamiento ortodóncico. Por otro lado, AD1 también aumentó, pero no significativamente (p&gt; 0.05).  Conclusión:  La terapia REM, en pacientes en crecimiento, logra separar la sutura palatina media aumentando el tamaño del piso de las fosas nasales y el volumen en el territorio nasofaríngeo. Se necesitan estudios con un tamaño de muestra mayor y un seguimiento a largo plazo para establecer el éxito de esta terapia.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  One of the treatments indicated for transverse maxillary deficiency is rapid maxillary expansion (REM). This article deals with REM therapy and shows, based on a bibliographic review, the various benefits that it can generate for the patient and the changes in their anatomy.  Objectives:  To elucidate the effect of REM therapy on the nasopharyngeal airway. Also expose, based on scientific evidence, the changes that it produces in the morphology and resistance on the pharyngeal airway. This through different study methods currently available.  Materials and methods:  A bibliographic search was carried out in the databases: PubMed, Clinicalkey and Epistemonikos. From a total universe of 77 publications, 12 studies were selected for this review.  Results:  In the studies carried out using cephalometric radiographs, a significant increase (p &lt; 0.05) in the nasopharyngeal airway space was obtained, particularly in the AD2 and AD-PtV measurements, after orthodontic treatment. On the other hand, AD1 also increased, but not significantly (p &gt; 0.05).  Conclusion:  REM therapy, in growing patients, manages to separate the middle palatal suture by increasing the size of the floor of the nostrils and the volume in the nasopharyngeal territory. Studies with a larger sample size and long-term follow-up are needed to establish the success of this therapy.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Paladar]]></kwd>
<kwd lng="es"><![CDATA[Expansión]]></kwd>
<kwd lng="es"><![CDATA[Vía aérea]]></kwd>
<kwd lng="es"><![CDATA[Faringe]]></kwd>
<kwd lng="es"><![CDATA[Expansión maxilar]]></kwd>
<kwd lng="es"><![CDATA[Ortodoncia]]></kwd>
<kwd lng="es"><![CDATA[Cavidad nasal]]></kwd>
<kwd lng="es"><![CDATA[Respiración anómala]]></kwd>
<kwd lng="es"><![CDATA[Maxilar.]]></kwd>
<kwd lng="en"><![CDATA[Expansion]]></kwd>
<kwd lng="en"><![CDATA[Airway]]></kwd>
<kwd lng="en"><![CDATA[Pharynx]]></kwd>
<kwd lng="en"><![CDATA[Maxillary expansion]]></kwd>
<kwd lng="en"><![CDATA[Orthodontics]]></kwd>
<kwd lng="en"><![CDATA[Nasal cavity]]></kwd>
<kwd lng="en"><![CDATA[Abnormal breathing]]></kwd>
<kwd lng="en"><![CDATA[Maxillary.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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