<?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>2215-3411</journal-id>
<journal-title><![CDATA[Odovtos International Journal of Dental Sciences]]></journal-title>
<abbrev-journal-title><![CDATA[Odovtos]]></abbrev-journal-title>
<issn>2215-3411</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Odontología. Universidad de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2215-34112021000300075</article-id>
<article-id pub-id-type="doi">10.15517/ijds.2021.45371</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Evaluation of fracture strength and total void amount in composite restorations on endodontically treated teeth]]></article-title>
<article-title xml:lang="es"><![CDATA[Resistencia a la fractura y la cantidad total de burbujas en resinas compuestas de dientes tratados endodónticamente]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tekçe]]></surname>
<given-names><![CDATA[Neslihan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aydemir]]></surname>
<given-names><![CDATA[Seda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Demirci]]></surname>
<given-names><![CDATA[Mustafa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tuncer]]></surname>
<given-names><![CDATA[Safa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bozkaya]]></surname>
<given-names><![CDATA[Selen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sevilay Y&#305;ld&#305;r&#305;m]]></surname>
<given-names><![CDATA[Elif]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Akman]]></surname>
<given-names><![CDATA[&#350;eyma]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Kocaeli University Faculty of Dentistry Department of Restorative Dentistry]]></institution>
<addr-line><![CDATA[Kocaeli ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Kocaeli University Faculty of Dentistry Department of Endodontics]]></institution>
<addr-line><![CDATA[Kocaeli ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Istanbul University Faculty of Dentistry Department of Restorative Dentistry]]></institution>
<addr-line><![CDATA[Istanbul ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Istanbul University Faculty of Dentistry Department of Restorative Dentistry]]></institution>
<addr-line><![CDATA[Istanbul ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Kocaeli University Faculty of Dentistry Department of Restorative Dentistry]]></institution>
<addr-line><![CDATA[Kocaeli ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Kocaeli University Faculty of Dentistry Department of Restorative Dentistry]]></institution>
<addr-line><![CDATA[Kocaeli ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,Kocaeli University Faculty of Dentistry Department of Restorative Dentistry]]></institution>
<addr-line><![CDATA[Kocaeli ]]></addr-line>
<country>Turkey</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>23</volume>
<numero>3</numero>
<fpage>75</fpage>
<lpage>86</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S2215-34112021000300075&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S2215-34112021000300075&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S2215-34112021000300075&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT: The aim of the study was to investigate the fracture strength of different composite resins and the quantity of voids in conventional posterior composite, high- flow flowable composite, bulk-fill flowable composite, and fiber-reinforced composite. Forty-four caries-free, freshly extracted mandibular premolars were used for this study. Teeth were prepared for cavity and root canal treatment. Subsequently, root canal treatment was applied to the teeth and cavities in order to prepare them for restorations. The specimens were then divided into four groups: group-1: Estelite Posterior; group-2: Estelite Flow Quick High Flow; group-3: Estelite Bulk-fill Flow; group-4: everX Posterior. One specimen from each experimental group was examined using micro-CT to perform measurement of voids. The fracture strength values of high-flow flowable, bulk-fill flowable, fiber-reinforced, and conventional micro- hybrid composites were found to be similar (p=0.497). EverX Posterior showed the highest fracture strength values (841.1±149.4 N), followed by Estelite Bulk-fill Flow (822.8±170.8 N). Volume of voids (%) obtained from Micro-CT analysis revealed that restorations with high-flow liner or bulk-fill flowable exhibited more voids. The fiber-reinforced composite showed the lowest percentage volume of incorporating voids and the highest fracture strength results.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN: El objetivo del estudio fue investigar la resistencia a la fractura de diferentes resinas compuestas y la cantidad de burbujas en resinas posteriores convencionales, resinas fluidas de alto flujo, resinas fluidas tipo bulk-fill y resinas reforzados con fibras. Cuarenta y cuatro premolares mandibulares libres de caries, recién extraídos, fueron usados para este estudio. Los dientes se prepararon para el tratamiento de conductos radiculares y las cavidades para prepararlos para las restauraciones. Los especímenes se dividieron en cuatro grupos: Grupo-1: Estelite Posterior; Grupo-2: Estelite Flow Quick High Flow; Grupo-3: Estelite Bulk-fill Flow; Grupo-4: everX Posterior. Un espécimen de cada grupo experimental fue examinado usando micro-CT para realizar la medición de las burbujas. Los valores de resistencia a la fractura de los compuestos de alto flujo, flujo de relleno, reforzados con fibra y microhíbridos convencionales fueron similares (p=0,497). EverX Posterior mostró los valores más altos de resistencia a la fractura (841,1±149,4 N), seguido de Estelite Bulk-fill Flow (822,8±170,8 N). El volumen de las burbujas (%) obtenido del análisis de Micro-TC reveló que las restauraciones con revestimiento de alto flujo o con flujo de relleno a granel presentaban más huecos. El compuesto reforzado con fibra mostró el menor porcentaje de volumen de incorporación de vacíos y los resultados más altos de resistencia a la fractura.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Bulk-fill composite]]></kwd>
<kwd lng="en"><![CDATA[Flowable composite]]></kwd>
<kwd lng="en"><![CDATA[Fiber-reinforced composite]]></kwd>
<kwd lng="en"><![CDATA[Fracture strength]]></kwd>
<kwd lng="en"><![CDATA[Micro-computed tomography]]></kwd>
<kwd lng="en"><![CDATA[Posterior composite]]></kwd>
<kwd lng="es"><![CDATA[Resina Bulk-fill]]></kwd>
<kwd lng="es"><![CDATA[Resina fluida]]></kwd>
<kwd lng="es"><![CDATA[Resina reforzada con fibra]]></kwd>
<kwd lng="es"><![CDATA[Resistencia a la fractura]]></kwd>
<kwd lng="es"><![CDATA[Tomografía microcomputarizada]]></kwd>
<kwd lng="es"><![CDATA[Resina posterior]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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<volume>29</volume>
<numero>3</numero>
<issue>3</issue>
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