<?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>2007-0705</journal-id>
<journal-title><![CDATA[Nova scientia]]></journal-title>
<abbrev-journal-title><![CDATA[Nova scientia]]></abbrev-journal-title>
<issn>2007-0705</issn>
<publisher>
<publisher-name><![CDATA[Universidad de La Salle Bajío A. C., Coordinación de Investigación]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-07052015000300168</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Effect of the gonadal integrity and the gender on responses of bone crestal levels in dogs with two dental prosthetic abutment types]]></article-title>
<article-title xml:lang="es"><![CDATA[Efecto de la integridad gonadal y el género sobre las respuestas de los niveles de la cresta ósea en perros con dos tipos de pilares protésicos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valenzuela Vásquez]]></surname>
<given-names><![CDATA[Gilberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Grau León]]></surname>
<given-names><![CDATA[Ilena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Urbizo Velez]]></surname>
<given-names><![CDATA[Joaquín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Soto Cantero]]></surname>
<given-names><![CDATA[Luis Atilano]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Rubio Carrillo]]></surname>
<given-names><![CDATA[Ricardo Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mercado Rodríguez]]></surname>
<given-names><![CDATA[Julio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rentería Evangelista]]></surname>
<given-names><![CDATA[Tomás B.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Baja California Facultad de Odontología ]]></institution>
<addr-line><![CDATA[ Mexicali]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Ciencias Médicas de La Habana Facultad de Estomatología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Baja California Instituto de Investigaciones en Ciencias Veterinarias ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2015</year>
</pub-date>
<volume>7</volume>
<numero>15</numero>
<fpage>168</fpage>
<lpage>184</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-07052015000300168&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-07052015000300168&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-07052015000300168&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Fourteen adult mongrel dogs (5 intact and 9 neutered) comprising seven males and seven females were used to evaluate change in levels of alveolar crestal bone after implanting two types of dental abutments. Implants were surgically placed in both mandibular fourth premolar zones and restored with conventional (CONV) and platform switching (PFS) abutments. Both abutments were evaluated in each dog. The study lasted 180 days; restoration was performed at Day 60 postsurgical-placed implants and alveolar crestal bone levels was evaluated on Days 0, 30, 60, and 90 post-restoration (cemented crown) through indirect measurement using a digital X-ray sensor. Experimental data were analysed using a completely randomized design: the experimental unit was the dog (random effect), the treatment was the abutment type (fixed effect), and crestal bone level of each implant side (mesial and distal) was the observation. In addition, the gonadal integrity (intact and neutered) and the gender (male and female) were included in the statistical analysis to evaluate their role on the magnitude of changes (interactions) on alveolar crestal bone levels. The average of crestal bone loss was 0.400 ± 0.186 mm. In general, dogs with CONV had a greater (27.3%, P &lt; 0.05) crestal bone loss than dogs with PFS. Intact dogs that received PFS had minor (P &lt; .01) bone loss than dogs receiving CONV, but in neutered dogs, abutment type had no effect (P = 0.98) on crestal bone loss level; therefore, an interaction (P &lt; 0.01) between type of abutment and gonadal conditions was detected. There was no interaction (P &gt; 0.77) between gender and abutment type. Similarly, as a sole factor of variation, gender had no effect (P = 0.26) on crestal bone level responses to abutment type (-0.401 vs -0.385 mm for males and females, respectively). Regardless of the type of abutment, males and females had a similar (P = .65) crestal bone loss (-0.405 vs. -0.393), while neutered dogs showed a greater (30.8%, P &lt; 0.01) crestal bone loss compared with intact dogs. In conclusion, dogs with PFS showed less crestal bone loss than CONV; however, regardless of gender, this response only was maintained in intact dogs; therefore the gonadal condition has an effect on the magnitude of changes of the alveolar crestal bone levels in their response to abutment type in dogs with dental implants.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Catorce perros mestizos adultos (5 intactos y 9 esterilizados), compuestos por siete machos y siete hembras fueron utilizadas para evaluar el efecto de dos tipos de aditamentos protésicos de implantes dentales sobre el nivel de la cresta ósea alveolar. Los implantes dentales fueron colocados quirúrgicamente en zonas de cuartos premolares inferiores y restaurados con aditamentos protésicos convencionales (CONV) y de cambio de plataforma (PFS). Ambos aditamentos protésicos fueron evaluados en cada perro. El estudio duró 180 días, en los que se realizó la restauración al día 60 post-quirúrgicamente colocados los implantes, la evaluación del nivel de la cresta ósea alveolar se realizó en los días 0, 30, 60 y 90 después de la restauración (corona cementada) a través de medición indirecta utilizando un sensor radiográfico digital. Los datos experimentales se analizaron mediante un diseño completamente al azar, la unidad experimental fue el perro (efecto aleatorio), el tratamiento era el tipo de pilar protésico (efectos fijos), y el nivel de la cresta ósea de cada lado del implante (mesial y distal) fue la observación. Además, factores como la condición gonadal (intactos y castrados) y el género (masculino y femenino) se incluyeron en el análisis estadístico para evaluar su papel en la magnitud de los cambios (interacciones) en los niveles de cresta ósea alveolar. El promedio de pérdida de hueso crestal fue 0.400 ± 0.186 mm. En general, los perros con CONV tuvieron una mayor pérdida de la cresta ósea que los perros con PFS. En los perros intactos que recibieron PFS se observó una menor pérdida ósea, pero en perros castrados, el tipo de aditamento no tuvo efecto (P = 0,98) en el nivel de pérdida de la cresta ósea; por lo tanto, se detectó una interacción (P &lt;0,01) entre el tipo de aditamento y la condición gonadal. No hubo interacción (P&gt; 0.77) entre el género y el tipo de aditamento, de manera similar, analizado como único factor de variación, el género no tuvo efecto (P = 0,26) en las respuestas del nivel de la cresta ósea al tipo de pilar protésico (-0.401vs. -0.385 mm, para macho y hembras respectivamente). Sin importar el tipo de pilar protésico, tanto machos como hembras mostraron pérdidas similares (-0.405 vs. -0.393, P&gt;0.65), mientras que los perros castrados mostraron una mayor (30,8%, P &lt;0,01) pérdida ósea crestal comparado con perros intactos. En conclusión, los perros con PFS mostraron una menor pérdida ósea crestal que áquellos que recibieron CONV; sin embargo, independientemente del género, esta respuesta sólo se mantuvo en perros intactos, por lo tanto, la condición gonadal tiene un efecto sobre la magnitud de los cambios de los niveles de hueso crestal alveolares como respuesta al tipo de aditamento protésico en perros con implantes dentales.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Pérdida ósea]]></kwd>
<kwd lng="es"><![CDATA[castrado]]></kwd>
<kwd lng="es"><![CDATA[implante dental]]></kwd>
<kwd lng="es"><![CDATA[perro]]></kwd>
<kwd lng="es"><![CDATA[cambio de plataforma]]></kwd>
<kwd lng="en"><![CDATA[bone loss]]></kwd>
<kwd lng="en"><![CDATA[neutered]]></kwd>
<kwd lng="en"><![CDATA[dogs]]></kwd>
<kwd lng="en"><![CDATA[dental implant]]></kwd>
<kwd lng="en"><![CDATA[platform switching]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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