<?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>1561-3194</journal-id>
<journal-title><![CDATA[Revista de Ciencias Médicas de Pinar del Río]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Ciencias Médicas]]></abbrev-journal-title>
<issn>1561-3194</issn>
<publisher>
<publisher-name><![CDATA[Editorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1561-31942023000400002</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Nivel de conocimientos de estudiantes de odontología sobre utilización y almacenamiento del hipoclorito de sodio]]></article-title>
<article-title xml:lang="en"><![CDATA[Level of knowledge of dental students on the use and storage of sodium hypochlorite]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Padilla Calderón]]></surname>
<given-names><![CDATA[Caroline Johana]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Torres]]></surname>
<given-names><![CDATA[Rómulo Guillermo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Salame Ortiz]]></surname>
<given-names><![CDATA[Verónica Alejandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Regional Autónoma de los Andes (UNIANDES).  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<volume>27</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1561-31942023000400002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1561-31942023000400002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1561-31942023000400002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  El hipoclorito de sodio es considerado como la solución irrigante de mayor uso a nivel mundial, sus características y bajo costo hacen que sea considerado el &#8220;Gold estándar&#8221; como complemento para la instrumentación endodóntica.  Objetivo:  determinar el conocimiento de los estudiantes de odontología de séptimo a décimo semestre en cuanto al manejo y almacenamiento del hipoclorito de sodio previo al inicio de sus prácticas preprofesionales.  Métodos:  se realizó un estudio observacional, descriptivo de corte transversal en el período académico mayo - septiembre 2022, en estudiantes de octavo a décimo semestre de la carrera de odontología de la Universidad Regional Autónoma de los Andes &#8220;UNIANDES&#8221; sobre su conocimiento acerca del almacenamiento del hipoclorito de sodio, así como las concentraciones de preferencia y los casos en los cuales se utilizaría cada una de ellas. Se utilizó un sondeo de opinión para conocer las condiciones más frecuentes de almacenamiento, con siete preguntas cerradas y de opción múltiple, las variables utilizadas y los resultados obtenidos fueron descritos estadísticamente mediante porcientos.  Resultados:  el 36,8 % de los estudiantes no almacena de forma correcta el hipoclorito de sodio, utilizan envases que no protegen al irrigante de la luz ambiente. El 97,4 % de los encuestados tienen el conocimiento acerca de la condición ambiental de almacenaje y temperatura. Existe discrepancia en cuanto a la concentración que se debe utilizar para la instrumentación de pulpas con diagnóstico de necrosis ya que el 50,4 % utilizan concentraciones más altas (5,25 %) mientras que el 42,7 % utiliza el irrigante al 2,5 %.  Conclusiones:  se debe complementar la investigación con estudios experimentales en donde se pueda demostrar que las condiciones de almacenamiento pueden perjudicar la composición y estabilidad del hipoclorito de sodio.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Introduction: sodium hypochlorite is considered the most widely used irrigant solution worldwide, its characteristics and low cost make it to be considered the "Gold standard" as a complement for endodontic instrumentation. Objective: io determine the knowledge of dental students in their seventh to tenth semesters regarding the handling and storage of sodium hypochlorite prior to the beginning of their pre-professional internships. Methods: an observational, descriptive, cross-sectional, descriptive study was carried out in the academic period May - September 2022, in students from eighth to tenth semester of the dentistry career of the Regional Autonomous University of the Andes "UNIANDES" on their knowledge about the storage of sodium hypochlorite, as well as the concentrations of preference and the cases in which each one of them would be used. An opinion poll was used to find out the most frequent storage conditions, with five closed and multiple choice questions, the variables used and the results obtained were described statistically by means of percentages. Results: 36,8 % of the students do not store sodium hypochlorite correctly; they use containers that do not protect the irrigant from ambient light. 97,4 % of the respondents have the knowledge about the environmental condition of storage and temperature. There is a discrepancy regarding the concentration that should be used for the instrumentation of pulps with a diagnosis of necrosis, since 50,4 % use higher concentrations (5,25 %) while 42,7 % use 2,5 % irrigant. Conclusions: the research should be complemented with experimental studies in which it can be demonstrated that storage conditions can impair the composition and stability of sodium hypochlorite.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[HIPOCLORITO DE SODIO]]></kwd>
<kwd lng="es"><![CDATA[ALMACENAMIENTO]]></kwd>
<kwd lng="es"><![CDATA[CONCENTRACIÓN, TEMPERATURA]]></kwd>
<kwd lng="en"><![CDATA[SODIUM HYPOCHLORITE]]></kwd>
<kwd lng="en"><![CDATA[STORAGE]]></kwd>
<kwd lng="en"><![CDATA[CONCENTRATION]]></kwd>
<kwd lng="en"><![CDATA[TEMPERATURE.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zhu]]></surname>
<given-names><![CDATA[WC]]></given-names>
</name>
<name>
<surname><![CDATA[Gyamfi]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Niu]]></surname>
<given-names><![CDATA[LN]]></given-names>
</name>
<name>
<surname><![CDATA[Schoeffel]]></surname>
<given-names><![CDATA[GJ]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[SY]]></given-names>
</name>
<name>
<surname><![CDATA[Santarcangelo]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Anatomy of sodium hypochlorite accidents involving facial ecchymosis - a review.]]></article-title>
<source><![CDATA[Journal of Dentistry]]></source>
<year>2013</year>
<volume>41</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>935-48.</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bartolo]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Koyess]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Camilleri]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Micallef]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Model assessing thermal changes during high temperature root canal irrigation.]]></source>
<year>2016</year>
<volume>3</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>247-51.</page-range><publisher-name><![CDATA[Healthcare Technology Letters]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<label>3.</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Baser Can]]></surname>
<given-names><![CDATA[ED]]></given-names>
</name>
<name>
<surname><![CDATA[Karapinar Kazandag]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Kaptan]]></surname>
<given-names><![CDATA[RF.]]></given-names>
</name>
</person-group>
<source><![CDATA[Inadvertent apical extrusion of sodium hypochlorite with evaluation by dental volumetric tomography.]]></source>
<year>2015</year>
<volume>2015</volume>
<page-range>247547</page-range><publisher-name><![CDATA[Case Reports in Dentistry]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<label>4.</label><nlm-citation citation-type="book">
<source><![CDATA[Contemporary terminology for endodontics.]]></source>
<year>1998</year>
<edition>6th</edition>
<publisher-loc><![CDATA[Chicago ]]></publisher-loc>
<publisher-name><![CDATA[Glossary: American Association of Endodontics.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<label>5.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dakin]]></surname>
<given-names><![CDATA[HD.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[On the use of certain antiseptic substances in the treatment of infected wounds.]]></article-title>
<source><![CDATA[Br Med J]]></source>
<year>1915</year>
<volume>2</volume>
<numero>2852</numero>
<issue>2852</issue>
<page-range>318-320.</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barret]]></surname>
<given-names><![CDATA[MT.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Dakin-carrel antiseptic solution.]]></article-title>
<source><![CDATA[Dent Cosmos]]></source>
<year>1917</year>
<volume>71</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>237-240.</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Coolidge]]></surname>
<given-names><![CDATA[ED.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Studies of germicides for the treatment of root canals.]]></article-title>
<source><![CDATA[J Ame Dent Assoc]]></source>
<year>1929</year>
<volume>16</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>698-712.</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Walker]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A definite and dependable therapy for pulpless teeth.]]></article-title>
<source><![CDATA[J Ame Dent Assoc]]></source>
<year>1936</year>
<volume>23</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>1418-1425.</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Byström]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Sundqvist]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The antibacterial action of sodium hypochlorite and EDTA in 60 cases of endodontic therapy.]]></article-title>
<source><![CDATA[Int Endod J]]></source>
<year>1985</year>
<volume>18</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>35-40.</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nandakumar]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Nasim]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of intracanal cryotreated sodium hypochlorite on postoperative pain after root canal treatment - A randomized controlled clinical trial.]]></article-title>
<source><![CDATA[J Conserv Dent]]></source>
<year>2020</year>
<volume>23</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>131-6.</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Verma]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Sangwan]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Tewari]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Duhan]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of Different Concentrations of Sodium Hypochlorite on Outcome of Primary Root Canal Treatment: A Randomized Controlled Trial.]]></article-title>
<source><![CDATA[J Endod]]></source>
<year>2019</year>
<volume>45</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>357-63.</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Del Carpio-Perochena]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Monteiro Bramante]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Hungaro Duarte]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Bombarda de Andrade]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Zardin Graeff]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Marciano da Silva]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of Temperature, Concentration and Contact Time of Sodium Hypochlorite on the Treatment and Revitalization of Oral Biofilms.]]></article-title>
<source><![CDATA[J Dent Res Dent Clin Dent Prospects]]></source>
<year>2015</year>
<volume>9</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>209-15.</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Stojicic]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Zivkovic]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Qian]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Haapasalo]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Tissue dissolution by sodium hypochlorite: effect of concentration, temperature, agitation, and surfactant.]]></article-title>
<source><![CDATA[J Endod]]></source>
<year>2010</year>
<volume>36</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>1558-62.</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gambarini]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[De Luca]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Gerosa]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Chemical stability of heated sodium hypochlorite endodontic irrigants.]]></article-title>
<source><![CDATA[J Endod]]></source>
<year>1998</year>
<volume>24</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>432-4.</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wright]]></surname>
<given-names><![CDATA[PP]]></given-names>
</name>
<name>
<surname><![CDATA[Kahler]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Walsh]]></surname>
<given-names><![CDATA[LJ.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Effect of Heating to Intracanal Temperature on the Stability of Sodium Hypochlorite Admixed with Etidronate or EDTA for Continuous Chelation.]]></article-title>
<source><![CDATA[J Endod]]></source>
<year>2019</year>
<volume>45</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>57-61.</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Berman]]></surname>
<given-names><![CDATA[LH]]></given-names>
</name>
<name>
<surname><![CDATA[Hargreaves]]></surname>
<given-names><![CDATA[KM.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cohen&#8217;s Pathways of the Pulp - 12th Edition]]></article-title>
<source><![CDATA[ELSEVIER;]]></source>
<year>2020</year>
<edition>12</edition>
</nlm-citation>
</ref>
<ref id="B17">
<label>17.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Claudino Ribeiro]]></surname>
<given-names><![CDATA[JR]]></given-names>
</name>
<name>
<surname><![CDATA[da Silveira Bueno]]></surname>
<given-names><![CDATA[CE]]></given-names>
</name>
<name>
<surname><![CDATA[Bruno]]></surname>
<given-names><![CDATA[KF]]></given-names>
</name>
<name>
<surname><![CDATA[Dos Reis]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[de Martin]]></surname>
<given-names><![CDATA[AS]]></given-names>
</name>
<name>
<surname><![CDATA[Fontana]]></surname>
<given-names><![CDATA[CE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Impact of Sodium Hypochlorite on Organic Tissue Dissolution in the Periapical Region of Immature Permanent Teeth: An Ex Vivo Study.]]></article-title>
<source><![CDATA[J Endod]]></source>
<year>2022</year>
<volume>48</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>555-60.</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Córdova Lascano]]></surname>
<given-names><![CDATA[AC]]></given-names>
</name>
<name>
<surname><![CDATA[Ortiz Suárez]]></surname>
<given-names><![CDATA[HS.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Usos del dióxido de cloro como prevención y tratamiento de la COVID-19 desde la percepción del usuario.]]></article-title>
<source><![CDATA[Salud Cienc. Tecnol]]></source>
<year>2022</year>
<volume>2</volume>
<numero>S1</numero>
<issue>S1</issue>
<page-range>176</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
