<?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>S0034-75072020000100008</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Sellado marginal aplicando hipoclorito de sodio versus ácido fosfórico como acondicionador dental]]></article-title>
<article-title xml:lang="en"><![CDATA[Marginal sealing applying sodium hypochlorite versus phosphoric acid as dental conditioner]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cayo Rojas]]></surname>
<given-names><![CDATA[César Félix]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A3"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cristal Carrillo Marcos]]></surname>
<given-names><![CDATA[Annais Adely]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Inca Garcilaso de la Vega Instituto de Investigación ]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Inca Garcilaso de la Vega Facultad de Estomatología ]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Alas Peruanas Filial Huacho Facultad de Medicina Humana y Ciencias de la Salud ]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Perú</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2020</year>
</pub-date>
<volume>57</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0034-75072020000100008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0034-75072020000100008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0034-75072020000100008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: La microfiltración es uno de los problemas principales de todas las obturaciones a base de resina. Muchos estudios buscan optimizar un buen sellado marginal utilizando diversos acondicionadores, como el hipoclorito de sodio, que permite que el adhesivo penetre bien, al generar desproteinización, y el ácido fosfórico que permite remover el barro dentinario, y así de esta manera formar una capa híbrida al colocar el adhesivo.  Objetivo:  Evaluar el grado de sellado marginal de la resina Bulk Fill aplicando gel de hipoclorito de sodio 10 % comparado con el gel de ácido fosfórico al 37 % en el acondicionamiento dental in vitro.  Métodos:  El universo fue de 72 dientes con cavidades clase I; se separaron en 4 grupos por muestra de 18 dientes cada uno; después de obturar se realizó el termociclaje a 500 ciclos entre 5 °C a 55 °C; luego se sumergieron en azul de metileno 2 %, durante 12 h y 24 h a temperatura de 37 °C. Finalmente se evaluó el sellado marginal en el estereomicroscopio, según el ISO / TS 11405: 2015, con los criterios siguientes: grado 0 (sin microfiltración), grado 1 (microfiltración hasta esmalte), grado 2 (microfiltración hasta dentina) y grado 3 (microfiltración hasta piso pulpar).  Resultados: El acondicionamiento con ácido fosfórico 37 % a las 12 h presentó grado 0 (55,6 %) y grado 1 (33,3 %), y a las 24 h, grado 1 (55,6 %). Con respecto al hipoclorito de sodio 10 % a las 12 h, grado 0 (44.4%) y a las 24 h predominó grado 1 (55,6 %). Para la contrastación de hipótesis en muestras relacionadas se obtuvo en ácido fosfórico 37 % e hipoclorito de sodio al 10 % a las 12 h y 24 h un p= 0,052 y p= 0,584, respectivamente. Para comparaciones entre muestras independientes a las 12 h y 24 h se obtuvo p= 0,462 y p= 0,406, respectivamente.  Conclusiones: El gel de hipoclorito de sodio al 10 % presenta similar eficacia en el sellado marginal respecto al gel de ácido fosfórico al 37 %, al utilizarlo como acondicionador dental .]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: Microfiltration is one of the main problems of all resin sealings. Many studies aim to optimize marginal sealing using a variety of conditioners, such as sodium hypochlorite, which allows good penetration of the adhesive by generating deproteinization, and phosphoric acid, which allows removal of the dental smear layer, thus creating a hybrid layer when the adhesive is placed.  Objective:  Evaluate the marginal sealing degree of Bulk Fill resin applying 10% sodium hypochlorite gel versus 37% phosphoric acid gel in in vitro dental conditioning.  Methods:  The study universe was 72 teeth with class I cavities, divided into four groups of 18 teeth. Upon sealing, thermal cycling was performed at 500 cycles from 5 ºC to 55 ºC. Next the teeth were submerged in 2% methylene blue for 12 h and 24 h at a temperature of 37 ºC. Finally marginal sealing was evaluated in the stereo microscope according to ISO / TS 11405: 2015, using the following scale: grade 0 (no microfiltration), grade 1 (microfiltration as far as the enamel), grade 2 (microfiltration as far as the dentin), and grade 3 (microfiltration as far as the pulp floor).  Results: Conditioning with 37% phosphoric acid was grade 0 (55.6%) and grade 1 (33.3%) at 12 h, and grade 1 (55.6%) at 24 h, whereas conditioning with 10% sodium hypochlorite was grade 0 (44.4%) at 12 h, and predominantly grade 1 (55.6 %) at 24 h. Hypothesis contrast in related samples yielded 37% phosphoric acid and 10% sodium hypochlorite at 12 h and 24 h, p= 0.052 and p= 0.584, respectively. Comparison between independent samples at 12 h and 24 h yielded p= 0.462 and p= 0.406, respectively.  Conclusions: The 10% sodium hypochlorite gel has similar marginal sealing effectiveness as the 37% phosphoric acid gel when used as dental conditioners.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[ácido fosfórico]]></kwd>
<kwd lng="es"><![CDATA[hipoclorito de sodio]]></kwd>
<kwd lng="es"><![CDATA[microfiltración]]></kwd>
<kwd lng="en"><![CDATA[phosphoric acid]]></kwd>
<kwd lng="en"><![CDATA[sodium hypochlorite]]></kwd>
<kwd lng="en"><![CDATA[microfiltration]]></kwd>
</kwd-group>
</article-meta>
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