<?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>1028-9933</journal-id>
<journal-title><![CDATA[Revista Información Científica]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. inf. cient.]]></abbrev-journal-title>
<issn>1028-9933</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Ciencias Médicas Guantánamo]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1028-99332022000400003</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[El pH salival como marcador biológico en pacientes diagnosticados con carcinoma epidermoide oral de Guantánamo]]></article-title>
<article-title xml:lang="en"><![CDATA[Salivary pH as diagnostic biomarker in patients diagnosed with oral squamous cells carcinoma in Guantanamo]]></article-title>
<article-title xml:lang="pt"><![CDATA[pH salivar como marcador biológico em pacientes diagnosticados com carcinoma epidermóide oral de Guantánamo]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Urgelles-Rodriguez]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Legrá-López]]></surname>
<given-names><![CDATA[Hormanis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ricardo-Chacón]]></surname>
<given-names><![CDATA[Omar Abel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Policlínico Universitario &#8220;Emilio Daudinot Bueno&#8221;  ]]></institution>
<addr-line><![CDATA[ Guantánamo]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital General Docente "Dr. Agostinho Neto"  ]]></institution>
<addr-line><![CDATA[ Guantánamo]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Policlínico Comunitario &#8220;Mártires de Jamaica&#8221;  ]]></institution>
<addr-line><![CDATA[ Guantánamo]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2022</year>
</pub-date>
<volume>101</volume>
<numero>4</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1028-99332022000400003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1028-99332022000400003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1028-99332022000400003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  El cáncer bucal constituye un problema de salud de connotación mundial.  Objetivo:  Comparar las variaciones del pH salival entre pacientes con carcinoma epidermoide recién diagnosticados, después del tratamiento oncoespecífico y sujetos aparentemente sanos de la provincia Guantánamo, Cuba, en el período noviembre 2019- enero 2022.  Método:  Se realizó un estudio descriptivo, comparativo, transversal, en pacientes ambulatorios de la consulta de Cirugía Maxilofacial del Hospital General Docente &#8220;Dr. Agostinho Neto&#8221;. El grupo de estudio estuvo conformado por 200 pacientes divididos en 3 subgrupos: subgrupo I (50 pacientes recién diagnosticados con carcinoma epidermoide oral, con diagnóstico concomitante de caries dental y periodontitis crónica del adulto); subgrupo II (50 pacientes con la referida patología después de tratamiento oncoespecífico, tratados por las enfermedades bucales antes citadas) y subgrupo III (100 pacientes controles aparentemente sanos). Se estudiaron las variables: edad, sexo, tipo de dieta y pH salival.  Resultados:  La edad media fue de 59,8 años, 70 % fueron hombres. Se asoció la dieta consumida y cada subgrupo (p=0,001). El pH salival de los pacientes con carcinoma epidermoide recién diagnosticados afectados por ambas enfermedades bucales fue ácido (6,25±0,37) en comparación a los otros subgrupos. El 98,6 % de los pacientes con pH salival ácido presentaron una dieta usual a base de carbohidratos y grasas (p=0,000).  Conclusiones:  Se evidenció que el pH salival de los pacientes con carcinoma epidermoide recién diagnosticados fue ácido en comparación a los otros subgrupos, por lo que este parámetro puede usarse como un marcador biológico de la enfermedad.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Oral cancer is a common health problem worldwide.  Objective:  Compare the salivary pH range changes among patients diagnosed recently with oral squamous cells carcinoma after receiving oncospecific treatment and subjects apparently healthy, Guantanamo, Cuba, period time November 2019 -January 2022.  Method:  A descriptive, comparative, cross-sectional study was carried out in outpatients of the Maxillofacial Surgery Consultation room at the Hospital General Docente "Dr. Agostinho Neto". The study group consisted of 200 patients divided into 3 subgroups: subgroup I (50 newly diagnosed patients with oral squamous cell carcinoma, with concomitant diagnosis of dental caries and chronic adult periodontitis); subgroup II (50 patients with the aforementioned pathology after oncospecific treatment, treated for the aforementioned oral diseases) and subgroup III (100 apparently healthy control patients). The following variables were studied: age, sex, type of diet and salivary pH.  Results:  Average age was 59.8 years, 70% were men. There was an association between the diet consumed and each subgroup (p= 0.001). The salivary pH of newly diagnosed squamous cell carcinoma patients affected by both oral diseases was acidic (6.25±0.37) compared to the other subgroups. The 98.6% of patients with acid salivary pH presented a usual diet based on carbohydrates and fats (p=0.000).  Conclusions:  It was shown that the salivary pH of newly diagnosed patients with squamous cell carcinoma was acidic compared to the other subgroups. Therefore, this parameter can be used as a biological marker of the disease.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO  Introdução:  O câncer bucal é um problema de saúde global.  Objetivo:  Comparar as variações do pH salivar entre pacientes com carcinoma espinocelular recém-diagnosticado, após tratamento oncoespecífico, e indivíduos aparentemente saudáveis da província de Guantánamo, Cuba, no período de novembro de 2019 a janeiro de 2022.  Método:  Estudo descritivo, comparativo, cruzado seccional, em pacientes ambulatoriais da consulta de Cirurgia Bucomaxilofacial do Hospital General Docente &#8220;Dr. Agostinho Neto&#8221;. O grupo de estudo foi composto por 200 pacientes divididos em 3 subgrupos: subgrupo I (50 pacientes recém-diagnosticados com carcinoma espinocelular oral, com diagnóstico concomitante de cárie dentária e periodontite crônica do adulto); subgrupo II (50 pacientes com a patologia supracitada após tratamento oncoespecífico, tratados para as doenças bucais supracitadas) e subgrupo III (100 pacientes controles aparentemente saudáveis). As variáveis estudadas foram: idade, sexo, tipo de dieta e pH salivar. Resultados: A média de idade foi de 59,8 anos, 70% eram homens. A dieta consumida e cada subgrupo foram associados (p=0,001). O pH salivar de pacientes recém-diagnosticados com carcinoma espinocelular afetados por ambas as doenças bucais foi ácido (6,25±0,37) em comparação com os outros subgrupos. 98,6% dos pacientes com pH salivar ácido apresentaram dieta habitual baseada em carboidratos e gorduras (p=0,000).  Conclusões:  Evidenciou-se que o pH salivar dos pacientes com carcinoma espinocelular recém-diagnosticado foi ácido em relação aos demais subgrupos. Portanto, esse parâmetro pode ser utilizado como marcador biológico da doença.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[cáncer bucal]]></kwd>
<kwd lng="es"><![CDATA[carcinoma epidermoide]]></kwd>
<kwd lng="es"><![CDATA[dieta, pH salival, oncoespecífico, caries dental, periodontopatías]]></kwd>
<kwd lng="en"><![CDATA[oral cancer]]></kwd>
<kwd lng="en"><![CDATA[epidermoid carcinoma]]></kwd>
<kwd lng="en"><![CDATA[diet, salivary pH, oncospecific, dental caries, periodontopathies]]></kwd>
<kwd lng="pt"><![CDATA[câncer bucal]]></kwd>
<kwd lng="pt"><![CDATA[carcinoma de células escamosas]]></kwd>
<kwd lng="pt"><![CDATA[dieta, pH salivar, oncoespecífico, cárie dentária, doença periodontal]]></kwd>
</kwd-group>
</article-meta>
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