<?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>S0034-75072020000100003</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Cambios dimensionales de los tejidos peri-implantarios con injertos de tejido conectivo comparado con matrices xenogénicas]]></article-title>
<article-title xml:lang="en"><![CDATA[Dimensional changes of peri-implant tissues with connective tissue grafts vs. with xenogenic matrices]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bello Cristancho]]></surname>
<given-names><![CDATA[Lorena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Serrano Méndez]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia Departamento de Ciencias Básicas y Medicina Oral Posgrado de Periodoncia ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2020</year>
</pub-date>
<volume>57</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0034-75072020000100003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0034-75072020000100003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0034-75072020000100003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Objetivo:  Comparar los cambios dimensionales de los tejidos peri-implantarios en la zona estética, después de la segunda etapa quirúrgica de injertos de tejido conectivo autógeno comparados con una matriz de colágeno xenogénica, después de 3 meses de cicatrización.  Métodos:  En una serie de casos de seis pacientes con defectos del reborde alveolar, se realizó un procedimiento de aumento de volumen de tejidos blandos, asignando al azar dos modalidades de tratamiento: injerto de tejido conectivo subepitelial y matriz de colágeno dérmica acelular. Para evaluar los cambios dimensionales se tomaron impresiones antes del aumento y a los 90 días; estas fueron vaciadas para obtener modelos de yeso que fueron digitalizados; las dos imágenes fueron superpuestas; y tras la definición de tres puntos de interés, se calculó mediante un Software (D500 3D dental scanner - 3Shape, Copenhague, Dinamarca), los cambios dimensionales en milímetros. Se indagó por el dolor experimentado por los pacientes usando una escala visual análoga.  Resultados:  A los 90 días de realizada la cirugía, se observó un aumento en el grosor de los tejidos blandos peri-implantarios de 0,77 mm (rango 0,0-1,3) para el injerto de tejido conectivo, y 0,89 mm (rango 0,3-1,5) para la matriz dérmica acelular. No se encontraron diferencias estadísticamente significativas entre las dos modalidades de tratamiento, en ninguno de los tres puntos evaluados por paciente (p= 0,83; p= 0,83; p= 0,51). En cuanto al dolor experimentado entre el primer y séptimo días, no se encontraron diferencias estadísticamente significativas en la zona receptora intergrupo (p= 0,07; p= 0,12); intragrupo, injerto (p= 0,11) y matriz (p= 0,32); ni en la zona donante del grupo del injerto (p= 0,11).  Conclusiones:  El aumento en el grosor de los tejidos peri-implantarios fue similar después de 90 días en los dos grupos del estudio.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Objective:  Compare the dimensional changes of peri-implant tissues from the esthetic zone after the second surgical stage of autogenous connective tissue grafting vs. a xenogenic collagen matrix after three months' healing.  Methods:  A case-series of six patients with alveolar ridge defects underwent a soft tissue volume augmentation procedure, randomly assigning two treatment modes: subepithelial connective tissue graft and acellular dermal collagen matrix. Impressions were taken before augmentation and at 90 days to evaluate the dimensional changes. These were then emptied to obtain plaster models which were then digitalized. The two images were superimposed, and upon definition of three points of interest, the dimensional changes were estimated in millimeters with the software D500 3D dental scanner (3Shape, Copenhagen, Denmark). Inquiries were made about the pain experienced by patients using a visual analogue scale.  Results: Ninety days after surgery, increase in thickness of peri-implant soft tissues was 0.77 mm (range 0.0-1.3) for the connective tissue graft and 0.89 mm (range 0.3-1.5) for the acellular dermal matrix. No statistically significant differences were found between the two treatment modes at any of the three points evaluated per patient (p= 0.83, p= 0.83, p= 0.51). With respect to the pain experienced between the first and the seventh days, no statistically significant differences were found in the recipient zone intergroup (p= 0.07, p= 0.12), the graft intragroup (p= 0.11) and the matrix (p= 0.32), or in the donor zone of the graft group (p= 0.11).  Conclusions: Increase in the thickness of peri-implant tissues after 90 days was similar in the two study groups.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[implantes dentales]]></kwd>
<kwd lng="es"><![CDATA[aumento de la cresta alveolar]]></kwd>
<kwd lng="es"><![CDATA[trasplante autólogo]]></kwd>
<kwd lng="es"><![CDATA[trasplante heterólogo]]></kwd>
<kwd lng="en"><![CDATA[dental implants]]></kwd>
<kwd lng="en"><![CDATA[alveolar ridge augmentation]]></kwd>
<kwd lng="en"><![CDATA[autologous transplant]]></kwd>
<kwd lng="en"><![CDATA[heterologous transplant]]></kwd>
</kwd-group>
</article-meta>
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