<?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>1870-199X</journal-id>
<journal-title><![CDATA[Revista odontológica mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Odont. Mex]]></abbrev-journal-title>
<issn>1870-199X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Odontología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-199X2022000100008</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Análisis LIBS de la limpieza realizada por un láser Nd:Yag sobre instrumentos de níquel titanio usados]]></article-title>
<article-title xml:lang="en"><![CDATA[LIBS analysis of the cleaning performed by a Nd:Yag laser on used Nickel Titanium instruments]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vite Hernández]]></surname>
<given-names><![CDATA[Damara Citlali]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Luna Domínguez]]></surname>
<given-names><![CDATA[Jorge Humberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Luna Lara]]></surname>
<given-names><![CDATA[Carlos Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oliver Parra]]></surname>
<given-names><![CDATA[Rogelio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Tamaulipas Facultad de Odontología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Tamaulipas Facultad de Odontología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2022</year>
</pub-date>
<volume>26</volume>
<numero>1</numero>
<fpage>8</fpage>
<lpage>18</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-199X2022000100008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-199X2022000100008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-199X2022000100008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: los instrumentos endodóncicos usados retienen debris dentinario, lo que representa un riesgo biológico que afecta su esterilización.  Objetivo: evaluar con la técnica de espectroscopia de plasmas inducida por láser (LIBS) la limpieza de instrumentos endodóncicos de NiTi tratados con láser Nd:Yag.  Material y métodos: se evaluaron instrumentos ProTaper Next X2 (Dentsply Maillefer®, Ballaigues, Switzerland) y WaveOne Gold Primary (Dentsply Maillefer®, Ballaigues, Switzerland) bajo microscopio estereoscópico (20X) en dos etapas: 1) instrumentos usados, 2) instrumentos limpiados con ultrasonido o con láser Nd:Yag. En ambas etapas se registró la presencia y extensión de debris dentinario teñido con solución Van Gieson. Posteriormente, se analizó con técnica LIBS los elementos contenidos en el debris dentinario en instrumentos NiTi usados y tratados con diferentes métodos de limpieza.  Resultados: la técnica láser Nd:Yag presentó mayor capacidad de limpieza (p &lt; 0.0001). El análisis LIBS no mostró espectros de elementos contenidos en el debris biológico en los instrumentos tratados con ambos métodos.  Conclusiones: el láser Nd:Yag es un método eficaz para la limpieza de instrumentos NiTi que elimina de su superficie los elementos contenidos en el debris dentinario.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: used endodontic instruments retain dentin debris which represents a biological risk that affects their sterilization.  Objective: to assess the cleaning of NiTi endodontic instruments treated with an Nd:Yag laser using the laser-induced plasma spectroscopy (LIBS) technique.  Materials and methods: ProTaper Next X2 instruments (Dentsply Maillefer®, Ballaigues, Switzerland) and WaveOne Gold Primary (Dentsply Maillefer®, Ballaigues, Switzerland) were evaluated under a stereoscopic microscope (20X) in 2 stages: 1) used instruments, 2) instruments cleaned with ultrasonics or Nd:Yag laser. In both stages, the presence and extent of dentin debris stained with Van Gieson solution were recorded. Subsequently, the elements contained in the dentin debris found in used NiTi instruments and treated with different cleaning methods were analyzed with the LIBS technique.  Results: the Nd:Yag laser technique presented more cleaning capacity (p &lt; 0.0001). The LIBS analysis did not show spectra of elements contained in the biological debris in the instruments treated with both methods.  Conclusions: the Nd:Yag laser is an effective method for cleaning NiTi instruments by removing the elements contained in the dentin debris from its surface.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[debris dentinario]]></kwd>
<kwd lng="es"><![CDATA[láser Nd-YAG]]></kwd>
<kwd lng="es"><![CDATA[infección cruzada]]></kwd>
<kwd lng="es"><![CDATA[instrumentos rotatorios]]></kwd>
<kwd lng="es"><![CDATA[LIBS]]></kwd>
<kwd lng="en"><![CDATA[dentin debris]]></kwd>
<kwd lng="en"><![CDATA[Nd-YAG laser]]></kwd>
<kwd lng="en"><![CDATA[cross infection]]></kwd>
<kwd lng="en"><![CDATA[rotary instruments]]></kwd>
<kwd lng="en"><![CDATA[LIBS]]></kwd>
</kwd-group>
</article-meta>
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