<?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>S0034-75072022000100008</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Propiedades flexurales y estabilidad de color de materiales restauradores estéticos indirectos]]></article-title>
<article-title xml:lang="en"><![CDATA[Flexural properties and color stability of indirect esthetic restorative materials]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mederos]]></surname>
<given-names><![CDATA[Matias]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de León Cáceres]]></surname>
<given-names><![CDATA[Maria Elisa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tessore]]></surname>
<given-names><![CDATA[Romina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García]]></surname>
<given-names><![CDATA[Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cuevas-Suárez]]></surname>
<given-names><![CDATA[Carlos Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Grazioli Pita]]></surname>
<given-names><![CDATA[Guillermo Steven]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de la República Facultad de Odontología Cátedra de Materiales Dentales]]></institution>
<addr-line><![CDATA[Montevideo ]]></addr-line>
<country>Uruguay</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma del Estado de Hidalgo Área Académica de Odontología ]]></institution>
<addr-line><![CDATA[Pachuca ]]></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>59</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0034-75072022000100008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0034-75072022000100008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0034-75072022000100008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: Las diferencias en las propiedades mecánicas de los materiales cerámicos y a base de resina plantean la interrogante sobre cuál puede tener un mejor desempeño a largo plazo.  Objetivos: Evaluar la resistencia flexural y estabilidad de color de diferentes materiales restauradores estéticos indirectos.  Métodos:  Los materiales seleccionados fueron Filtek&#8482; Z250 XT (3M ESPE), Ceramage (SHOFU Dental), VITA VM® LC y VITA ENAMIC® (VITA Zahnfabrik), IPS e.max® (Ivoclar-Vivadent) y Zolid FX (Amann Girrbach AG). El ensayo de resistencia flexural (n = 10) fue realizado en una máquina universal de ensayos mecánicos. Las lecturas de color (n = 5) se midieron en un espectrofotómetro VITA Easyshade V®.  Resultados: Los materiales totalmente cerámicos mostraron un mejor desempeño mecánico (p &lt; 0,001). Los resultados de estabilidad de color muestran que Ceramage, IPS e.max® y Zolid FX, mostraron una diferencia estadísticamente significativa (p &#8804; 0,002) con Filtek Z250 XT, VITA VM® LC y VITA ENAMIC®.  Conclusiones: Los materiales totalmente cerámicos presentaron una mayor resistencia flexural y estabilidad de color que los materiales de base polimérica. A pesar de ello, los materiales estéticos indirectos con polímeros en su composición, como Ceramage, se presentan como una alternativa válida, ya que además de tener propiedades mecánicas adecuadas, poseen una estabilidad de color semejante a los materiales cerámicos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: Differences in the mechanical properties of ceramic and resin-based materials pose the question of which of the two will perform better in the long run.  Objectives: Evaluate the flexural resistance and color stability of different indirect esthetic restorative materials.  Methods:  The materials selected were Filtek&#8482; Z250 XT (3M ESPE), Ceramage (SHOFU Dental), VITA VM® LC and VITA ENAMIC® (VITA Zahnfabrik), IPS e.max® (Ivoclar-Vivadent) and Zolid FX (Amann Girrbach AG). The flexural resistance assay (n = 10) was conducted in a universal mechanical testing machine. Color readings (n = 5) were taken with a VITA Easyshade V® spectrophotometer.  Results: All-ceramic materials had better mechanical performance (p &lt; 0.001). Color stability results show that Ceramage, IPS e.max® and Zolid FX displayed a statistically significant difference (p &#8804; 0.002) with respect to Filtek Z250 XT, VITA VM® LC and VITA ENAMIC®.  Conclusions: All-ceramic materials exhibited greater flexural resistance and color stability than polymer-based materials. However, indirect esthetic materials with polymers in their composition, such as Ceramage, are presented as a valid alternative, due to their appropriate mechanical properties and their color stability, which is similar to that of ceramic materials.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[resinas compuestas]]></kwd>
<kwd lng="es"><![CDATA[cerámica]]></kwd>
<kwd lng="es"><![CDATA[percepción de color]]></kwd>
<kwd lng="en"><![CDATA[composite resins]]></kwd>
<kwd lng="en"><![CDATA[ceramic]]></kwd>
<kwd lng="en"><![CDATA[color perception]]></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[Smithson]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Newsome]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Reaney]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Owen]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Direct or indirect restorations?]]></article-title>
<source><![CDATA[Int Dent]]></source>
<year>2011</year>
<volume>1</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>70-80</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pjetursson]]></surname>
<given-names><![CDATA[BE]]></given-names>
</name>
<name>
<surname><![CDATA[Valente]]></surname>
<given-names><![CDATA[NA]]></given-names>
</name>
<name>
<surname><![CDATA[Strasding]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Zwahlen]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Sailer]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A systematic review of the survival and complication rates of zirconia&#8208;ceramic and metal&#8208;ceramic single crowns]]></article-title>
<source><![CDATA[Clin Oral Implants Res]]></source>
<year>2018</year>
<volume>29</volume>
<numero>S16</numero>
<issue>S16</issue>
<page-range>199-214</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Belli]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Geinzer]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Muschweck]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Petschelt]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Lohbauer]]></surname>
<given-names><![CDATA[U]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Mechanical fatigue degradation of ceramics versus resin composites for dental restorations]]></article-title>
<source><![CDATA[Dent Mater]]></source>
<year>2014</year>
<volume>30</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>424-32</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Demarco]]></surname>
<given-names><![CDATA[FF]]></given-names>
</name>
<name>
<surname><![CDATA[Collares]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Correa]]></surname>
<given-names><![CDATA[MB]]></given-names>
</name>
<name>
<surname><![CDATA[Cenci]]></surname>
<given-names><![CDATA[MS]]></given-names>
</name>
<name>
<surname><![CDATA[Morales]]></surname>
<given-names><![CDATA[RR de]]></given-names>
</name>
<name>
<surname><![CDATA[Opdam]]></surname>
<given-names><![CDATA[NJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Should my composite restorations last forever? Why are they failing?]]></article-title>
<source><![CDATA[Braz Oral Res]]></source>
<year>2017</year>
<volume>31</volume>
<numero>^ssuppl 1</numero>
<issue>^ssuppl 1</issue>
<supplement>suppl 1</supplement>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Edelhoff]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Özcan]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[To what extent does the longevity of fixed dental prostheses depend on the function of the cement? Working Group 4 materials: cementation]]></article-title>
<source><![CDATA[Clin Oral Implants Res]]></source>
<year>2007</year>
<volume>18</volume>
<page-range>193-204</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[Fron Chabouis]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Smail Faugeron]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Attal]]></surname>
<given-names><![CDATA[J-P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinical efficacy of composite versus ceramic inlays and onlays: A systematic review]]></article-title>
<source><![CDATA[Dent Mater]]></source>
<year>2013</year>
<volume>29</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>1209-18</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[Saba]]></surname>
<given-names><![CDATA[DA]]></given-names>
</name>
<name>
<surname><![CDATA[Salama]]></surname>
<given-names><![CDATA[RA]]></given-names>
</name>
<name>
<surname><![CDATA[Haridy]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of different beverages on the color stability and microhardness of CAD/CAM hybrid versus feldspathic ceramic blocks: An in-vitro study]]></article-title>
<source><![CDATA[Futur Dent J]]></source>
<year>2017</year>
<volume>3</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>61-6</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[Morimoto]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Rebello de Sampaio]]></surname>
<given-names><![CDATA[FBW]]></given-names>
</name>
<name>
<surname><![CDATA[Braga]]></surname>
<given-names><![CDATA[MM]]></given-names>
</name>
<name>
<surname><![CDATA[Sesma]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Özcan]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Survival Rate of Resin and Ceramic Inlays, Onlays, and Overlays]]></article-title>
<source><![CDATA[J Dent Res]]></source>
<year>2016</year>
<volume>95</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>985-94</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="">
<source><![CDATA[ISO 4049:2009 Dentistry Polymer based restorative materials]]></source>
<year>2009</year>
</nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yap]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Eweis]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Yahya]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Dynamic and Static Flexural Appraisal of Resin-based Composites: Comparison of the ISO and Mini-flexural Tests]]></article-title>
<source><![CDATA[Oper Dent]]></source>
<year>2018</year>
<volume>43</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>E223-31</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[Grazioli]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Francia]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Cuevas-Suárez]]></surname>
<given-names><![CDATA[CE]]></given-names>
</name>
<name>
<surname><![CDATA[Zanchi]]></surname>
<given-names><![CDATA[CH]]></given-names>
</name>
<name>
<surname><![CDATA[De]]></surname>
<given-names><![CDATA[Moraes RR]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Simple and Low-Cost Thermal Treatments on Direct Resin Composites for Indirect Use]]></article-title>
<source><![CDATA[Braz Dent J]]></source>
<year>2019</year>
<volume>30</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>279-84</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[Sharma]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Dalal]]></surname>
<given-names><![CDATA[EN]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The CIEDE2000 color-difference formula: Implementation notes, supplementary test data, and mathematical observations]]></article-title>
<source><![CDATA[Color Res Appl]]></source>
<year>2005</year>
<volume>30</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>21-30</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[Paravina]]></surname>
<given-names><![CDATA[RD]]></given-names>
</name>
<name>
<surname><![CDATA[Ghinea]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Herrera]]></surname>
<given-names><![CDATA[LJ]]></given-names>
</name>
<name>
<surname><![CDATA[Bona]]></surname>
<given-names><![CDATA[AD]]></given-names>
</name>
<name>
<surname><![CDATA[Igiel]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Linninger]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Color Difference Thresholds in Dentistry]]></article-title>
<source><![CDATA[J Esthet Restor Dent]]></source>
<year>2015</year>
<month>0</month>
<volume>27</volume>
<page-range>S1-9</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="">
<source><![CDATA[ISO 6872:2015 Dentistry - ceramic materials. International Organization for Standadization]]></source>
<year>2015</year>
</nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tavares L do]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Zancopé]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[ACA]]></given-names>
</name>
<name>
<surname><![CDATA[Raposo]]></surname>
<given-names><![CDATA[LHA]]></given-names>
</name>
<name>
<surname><![CDATA[Soares]]></surname>
<given-names><![CDATA[CJ]]></given-names>
</name>
<name>
<surname><![CDATA[Neves]]></surname>
<given-names><![CDATA[FD das]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Microstructural and mechanical analysis of two CAD-CAM lithium disilicate glass-reinforced ceramics]]></article-title>
<source><![CDATA[Braz Oral Res]]></source>
<year>2020</year>
<volume>34</volume>
</nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bociong]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Szczesio]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Krasowski]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Sokolowski]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The influence of filler amount on selected properties of new experimental resin dental composite]]></article-title>
<source><![CDATA[Open Chem]]></source>
<year>2018</year>
<volume>16</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>905-11</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cuevas-Suárez]]></surname>
<given-names><![CDATA[CE]]></given-names>
</name>
<name>
<surname><![CDATA[Meereis]]></surname>
<given-names><![CDATA[CTW]]></given-names>
</name>
<name>
<surname><![CDATA[D&#8217;accorso]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Macchi]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Ancona-Meza]]></surname>
<given-names><![CDATA[AL]]></given-names>
</name>
<name>
<surname><![CDATA[Zamarripa-Calderón]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of radiant exposure and UV accelerated aging on physico-chemical and mechanical properties of composite resins]]></article-title>
<source><![CDATA[J Appl Oral Sci]]></source>
<year>2019</year>
<volume>27</volume>
</nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Acar]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Yilmaz]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Altintas]]></surname>
<given-names><![CDATA[SH]]></given-names>
</name>
<name>
<surname><![CDATA[Chandrasekaran]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Johnston]]></surname>
<given-names><![CDATA[WM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Color stainability of CAD/CAM and nanocomposite resin materials]]></article-title>
<source><![CDATA[J Prosthet Dent]]></source>
<year>2016</year>
<volume>115</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>71-5</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Poggio]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Ceci]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Beltrami]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Mirando]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Wassim]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Colombo]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Color stability of esthetic restorative materials: a spectrophotometric analysis]]></article-title>
<source><![CDATA[Acta Biomater Odontol Scand]]></source>
<year>2016</year>
<volume>2</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>95-101</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Heintze]]></surname>
<given-names><![CDATA[SD]]></given-names>
</name>
<name>
<surname><![CDATA[Ilie]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Hickel]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Reis]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Loguercio]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Rousson]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Laboratory mechanical parameters of composite resins and their relation to fractures and wear in clinical trials-A systematic review]]></article-title>
<source><![CDATA[Dent Mater]]></source>
<year>2017</year>
<volume>33</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>e101-14</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
