<?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>S0034-75072019000300007</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto de la aplicación activa con aplicadores mejorados de un adhesivo universal]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of the active application of a universal adhesive with improved applicators]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arias]]></surname>
<given-names><![CDATA[Roque]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrasco]]></surname>
<given-names><![CDATA[Roberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bersezio]]></surname>
<given-names><![CDATA[Cristian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chaple Gil]]></surname>
<given-names><![CDATA[Alain Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernandez Godoy]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Chile Facultad de Odontología Departamento de Odontología Restauradora]]></institution>
<addr-line><![CDATA[Santiago de Chile ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Politécnica y Artística del Paraguay  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Paraguay</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Ciencias Médicas de La Habana Facultad de Ciencias Médicas "Victoria de Girón" ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autónoma de Chile Instituto de Ciencias Biomédicas ]]></institution>
<addr-line><![CDATA[Santiago de Chile ]]></addr-line>
<country>Chile</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2019</year>
</pub-date>
<volume>56</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0034-75072019000300007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0034-75072019000300007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0034-75072019000300007&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  La permeabilidad dentinaria es conocida como el paso de fluidos, iones, partículas, moléculas y bacterias a través de la dentina bajo ciertas condiciones.  Objetivo:  Determinar la influencia de la aplicación activa con un aplicador mejorado de un adhesivo dentinario sobre la conductancia hidráulica dentinaria humana, in vitro.  Métodos:  Estudio experimental in vitro en 40 terceros molares libres de caries, con indicación de exodoncia, provenientes de pacientes sanos entre 15 y 30 años, previo consentimiento informado. Posteriormente se limpiaron, desinfectaron y conservaron para ser incluidos en bloques de resina epóxica. Luego se realizaron cortes transversales y se obtuvieron discos dentinarios de 1,5 mm de espesor y 25 mm de diámetro. Se dividieron en dos grupos de 20 unidades cada uno, se sometieron a grabado con ácido ortofosfórico al 37 %, y se lavaron y secaron. Sobre una balanza de precisión se les aplicó adhesivo dentinario fotopolimerizable, registrando la fuerza ejercida. En el grupo 1 se usó un microbrush en la aplicación y en el grupo 2 un aplicador mejorado diseñado especialmente. Posteriormente cada muestra fue sometida a una cámara de difusión para obtener la tasa de flujo y luego calcular la conductancia hidráulica, la cual otorga información acerca de la permeabilidad de la dentina.  Resultados:  los resultados obtenidos fueron levemente menores en el grupo 2, sin embargo, experimentaron una distribución normal.  Conclusiones:  no existen diferencias significativas, al ser analizados estadísticamente bajo diversas pruebas, en los valores de conductancia hidráulica. Tampoco se pudo establecer una relación inversa entre la fuerza de aplicación de un adhesivo en forma activa con un aplicador mejorado y la conductancia hidráulica, por lo cual no se aconseja el uso de dicho instrumento.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Dentin permeability is defined as the passage of fluids, ions, particles, molecules and bacteria through the dentin under certain conditions.  Objective:  Determine the effect of the active application of a dentin adhesive with an improved applicator on human dentin hydraulic conductance in vitro.  Methods:  An in vitro experimental study was conducted of 40 caries-free third molars with an indication of exodontia from healthy patients aged 15-30 years, prior informed consent. The molars were cleaned, disinfected and preserved to be included in epoxy resin blocks. Cross-sectional cuts were then made to obtain dentin discs 1.5 mm thick and 25 mm in diameter. These were divided into two 20-unit groups, were subjected to etching with 37 % orthophosphoric acid, and were washed and dried. On a precision scale photopolymerizable dentin adhesive was applied, recording the force exerted. Application was performed with a Microbrush applicator in Group 1 and with an improved dedicated applicator in Group 2. The samples were then placed in a diffusion chamber to determine flow rate and subsequently estimate hydraulic conductance, thus obtaining information about dentin permeability.  Results:  Results were slightly lower in Group 2, but they displayed normal distribution.  Conclusions:  Statistical analysis with various tests did not find any significant differences in hydraulic conductance values, nor could an inverse relation be established between the force of active application of an adhesive with an improved applicator and hydraulic conductance. Therefore, use of that instrument is not advised.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[dentina]]></kwd>
<kwd lng="es"><![CDATA[recubrimiento dental adhesivo]]></kwd>
<kwd lng="es"><![CDATA[permeabilidad de la dentina]]></kwd>
<kwd lng="en"><![CDATA[dentin]]></kwd>
<kwd lng="en"><![CDATA[adhesive dental coating]]></kwd>
<kwd lng="en"><![CDATA[dentin permeability]]></kwd>
</kwd-group>
</article-meta>
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