<?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>1130-0558</journal-id>
<journal-title><![CDATA[Revista Española de Cirugía Oral y Maxilofacial]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Esp Cirug Oral y Maxilofac]]></abbrev-journal-title>
<issn>1130-0558</issn>
<publisher>
<publisher-name><![CDATA[ Sociedad Española de Cirugía Oral y Maxilofacial y de Cabeza y Cuello]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1130-05582024000300005</article-id>
<article-id pub-id-type="doi">10.20986/recom.2025.1581/2024</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Spatial relationship between mandibular third molar and the mandibular canal in cone beam computed tomography. A cross-sectional descriptive study]]></article-title>
<article-title xml:lang="es"><![CDATA[Relación espacial del conducto mandibular con el tercer molar en tomografías computarizadas de haz cónico. Un estudio descriptivo transversal]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bravo-Anchundia]]></surname>
<given-names><![CDATA[David Ismael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cabrera-Maldonado]]></surname>
<given-names><![CDATA[Leonardo Flavio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,University of Cuenca Faculty of Dentistry ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,University of Cuenca Faculty of Dentistry ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<volume>46</volume>
<numero>3</numero>
<fpage>136</fpage>
<lpage>144</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S1130-05582024000300005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S1130-05582024000300005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S1130-05582024000300005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Background: The spatial relationship between the mandibular canal and the third molar is the three-dimensional position of the mandibular canal with respect to the third molar and is a risk indicator for an injury to the neurovascular bundle in third molar extraction. The aim of this study was to determine the prevalence of the spatial relationship between the mandibular canal and the third molar.  Material and methods: A descriptive cross-sectional study was carried out, which evaluated the CBCT files of the anonymized database of the Department of Imaging of the Faculty of Dentistry of the University of Cuenca (Ecuador) within the period 2017-2023. The CBCTs that met the selection criteria were statistically analyzed according to the spatial relationship variable. The CBCTs were examined by the same observer after calibration by a specialist in Dental and Maxillofacial Imaging.  Results: 325 lower third molars were evaluated. The highest prevalence of the spatial relationship between the lower third molar and the mandibular canal was the caudal relationship without contact in 32.0 %, followed by the lingual relationship in contact in 22.2 %, buccal in contact in 14.8 %, caudal in contact in 12.9 %, buccal without contact in 8.6 %, interradicular in contact in 6.8 %, lingual without contact in 1.5 % and intrarradicular in contact in 1.2 %. 28.9 % of the third molars presented branches of the mandibular canal.  Conclusions: The most prevalent spatial relationship between the mandibular canal and the third molar was the caudal relationship without contact.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: La relación espacial entre el conducto mandibular y el tercer molar es la posición tridimensional del conducto mandibular con respecto al tercer molar y es un indicador de riesgo para una lesión al paquete vasculonervioso en la exodoncia del tercer molar. El objetivo de este estudio fue determinar la prevalencia de la relación espacial del conducto mandibular con el tercer molar.  Métodos: Se realizó un estudio descriptivo transversal, el cual evaluó los archivos de tomografías computarizadas de haz cónico (CBCT) de la base de datos anonimizada del Departamento de Imagenología de la Facultad de Odontología de la Universidad de Cuenca (Ecuador) dentro del periodo 2017-2023. Las CBCT que cumplieron con los criterios de selección fueron analizadas estadísticamente de acuerdo con la variable relación espacial. Las CBCT fueron examinadas por el mismo observador previa calibración por una especialista en imagenología dental y maxilofacial.  Resultados: Se evaluaron 325 terceros molares inferiores. La mayor prevalencia de la relación espacial entre el tercer molar inferior y el conducto mandibular fue la relación caudal sin contacto en el 32,0 %, seguido de la relación lingual en contacto en el 22,2 %, bucal en contacto en el 14,8 %, caudal en contacto en el 12,9 %, bucal sin contacto en el 8,6 %, interradicular en contacto en el 6,8 %, lingual sin contacto en el 1,5 % e intrarradicular en contacto en el 1,2 %. El 28,9 % de los terceros molares presentó conductos aberrantes.  Conclusiones: La relación espacial más prevalente entre el conducto mandibular y el tercer molar fue la relación caudal sin contacto.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Mandibular nerve]]></kwd>
<kwd lng="en"><![CDATA[cone-beam computed tomography]]></kwd>
<kwd lng="en"><![CDATA[third molar]]></kwd>
<kwd lng="en"><![CDATA[mandible]]></kwd>
<kwd lng="es"><![CDATA[Nervio mandibular]]></kwd>
<kwd lng="es"><![CDATA[tomografía computarizada de haz cónico]]></kwd>
<kwd lng="es"><![CDATA[tercer molar]]></kwd>
<kwd lng="es"><![CDATA[mandíbula]]></kwd>
</kwd-group>
</article-meta>
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