<?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>S0034-75072010000400004</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Síndrome da ardência bucal: uma revisão sobre aspectos clínicos, etiopatogenia e manejamento]]></article-title>
<article-title xml:lang="es"><![CDATA[Síndrome de ardor bucal: aspectos clínicos, etiopatogenia y tratamiento]]></article-title>
<article-title xml:lang="en"><![CDATA[Burning mouth syndrome: clinical characteristics, etiological factors and treatment]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gleber Netto]]></surname>
<given-names><![CDATA[Frederico Omar]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alves Diniz]]></surname>
<given-names><![CDATA[Ivana Márcia]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de Mattos Carmargo Grossmann]]></surname>
<given-names><![CDATA[Soraya]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vieira do Carmo]]></surname>
<given-names><![CDATA[Maria Auxiliadora]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ferreira de Aguiar]]></surname>
<given-names><![CDATA[Maria Cássia]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Faculdade de Odontologia da Universidade Federal de Minas Gerais Departamento de Clínica, Patologia e Cirurgia Odontológicas ]]></institution>
<addr-line><![CDATA[Belo Horizonte ]]></addr-line>
<country>MG-Brasil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2010</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2010</year>
</pub-date>
<volume>47</volume>
<numero>4</numero>
<fpage>417</fpage>
<lpage>427</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0034-75072010000400004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0034-75072010000400004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0034-75072010000400004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[El síndrome de boca ardiente (SBA) es una enfermedad crónica que se caracteriza por una sensación de quemazón de la mucosa bucal, que impresiona clínicamente normal. Es una entidad nosológica frecuente, sin embargo, los mecanismos implicados en su desarrollo en la actualidad son poco conocidos. El objetivo de este trabajo fue llevar a cabo una revisión de la literatura sobre dicho síndrome y se hizo énfasis en sus principales factores etiológicos y en el tratamiento de esta enfermedad. El SBA es una afección multifactorial compleja, debido a la diversidad de sus síntomas, dificultad en el tratamiento y las características psicológicas particulares de los pacientes. El diagnóstico correcto es el elemento principal para establecer el tratamiento. Es necesario realizar nuevas investigaciones para aclarar con precisión las causas del SAB, especialmente en la forma primaria.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Burning mouth syndrome (BMS) is a chronic condition characterized by burning sensation on a clinic normal oral mucosa. BMS is not a rare condition, however, mechanisms involved in their development remains poorly understood. The aim of this paper was to carry out a review of literature about this syndrome, highlighting the main etiological factors as an approach to the management of this condition.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[síndrome de boca ardiente]]></kwd>
<kwd lng="es"><![CDATA[etiología]]></kwd>
<kwd lng="es"><![CDATA[diagnóstico]]></kwd>
<kwd lng="es"><![CDATA[tratamiento]]></kwd>
<kwd lng="en"><![CDATA[Burning mouth syndrome]]></kwd>
<kwd lng="en"><![CDATA[etiology]]></kwd>
<kwd lng="en"><![CDATA[diagnosis]]></kwd>
<kwd lng="en"><![CDATA[treatment]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="right"><font face="Verdana, Arial, Helvetica, sans-serif" size="2">    <B>ART&Iacute;CULOS DE REVISI&Oacute;N</B></font></p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="3"><b><font size="4">S&iacute;ndrome    da ard&ecirc;ncia bucal: uma revis&atilde;o sobre aspectos cl&iacute;nicos,    etiopatogenia e manejamento</font></b></font></p>     <p>&nbsp;</p> <B>    <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="3">S&iacute;ndrome    de ardor bucal: aspectos cl&iacute;nicos, etiopatogenia y tratamiento</font>      <P>&nbsp;     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="3">Burning mouth syndrome:    clinical characteristics, etiological factors and treatment</font>      <P>&nbsp;      <P>&nbsp;      ]]></body>
<body><![CDATA[<P>      <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Frederico Omar    Gleber Netto<SUP>I</SUP>; Ivana M&aacute;rcia Alves Diniz<SUP>I</SUP>; Soraya    de Mattos Carmargo Grossmann<SUP>II</SUP>; Maria Auxiliadora Vieira do Carmo<SUP>III</SUP>;    Maria C&aacute;ssia Ferreira de Aguiar<SUP>III</SUP></font>  </B>      <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><SUP>I</SUP>Gradua&ccedil;&atilde;o    em Odontologia pela Faculdade de Odontologia da Universidade Federal de Minas    Gerais (UFMG), Belo Horizonte, MG-Brasil.    <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><SUP>II</SUP>Doutoranda    em Odontologia pela Faculdade de Odontologia da UFMG. Belo Horizonte, MG-Brasil.    <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><SUP>III</SUP>Professor    Associado, Departamento de Cl&iacute;nica, Patologia e Cirurgia Odontol&oacute;gicas-Faculdade    de Odontologia da UFMG. Belo Horizonte, MG-Brasil.</font>      <p>&nbsp;</p>     <p>&nbsp;</p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><hr size="1" noshade>    </font>     <P>      ]]></body>
<body><![CDATA[<P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><B>RESUMEN</B>    </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">El s&iacute;ndrome    de boca ardiente (SBA) es una enfermedad cr&oacute;nica que se caracteriza por    una sensaci&oacute;n de quemaz&oacute;n de la mucosa bucal, que impresiona cl&iacute;nicamente    normal. Es una entidad nosol&oacute;gica frecuente, sin embargo, los mecanismos    implicados en su desarrollo en la actualidad son poco conocidos. El objetivo    de este trabajo fue llevar a cabo una revisi&oacute;n de la literatura sobre    dicho s&iacute;ndrome y se hizo &eacute;nfasis en sus principales factores etiol&oacute;gicos    y en el tratamiento de esta enfermedad. El SBA es una afecci&oacute;n multifactorial    compleja, debido a la diversidad de sus s&iacute;ntomas, dificultad en el tratamiento    y las caracter&iacute;sticas psicol&oacute;gicas particulares de los pacientes.    El diagn&oacute;stico correcto es el elemento principal para establecer el tratamiento.    Es necesario realizar nuevas investigaciones para aclarar con precisi&oacute;n    las causas del SAB, especialmente en la forma primaria. </font>      <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Palabras clave</I>:    s&iacute;ndrome de boca ardiente, etiolog&iacute;a, diagn&oacute;stico, tratamiento.    <hr size="1" noshade></font>     <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><B>ABSTRACT</B>    </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Burning mouth syndrome    (BMS) is a chronic condition characterized by burning sensation on a clinic    normal oral mucosa. BMS is not a rare condition, however, mechanisms involved    in their development remains poorly understood. The aim of this paper was to    carry out a review of literature about this syndrome, highlighting the main    etiological factors as an approach to the management of this condition. </font>      <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Key words:</I>    Burning mouth syndrome, etiology, diagnosis, treatment. <hr size="1" noshade></font>     ]]></body>
<body><![CDATA[<p>&nbsp;</p>     <p>&nbsp;</p>     <P>      <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><B><font size="3">INTRODU&Ccedil;&Atilde;O</font></B>    </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">S&iacute;ndrome    da ard&ecirc;ncia bucal (SAB) &eacute; uma condi&ccedil;&atilde;o cr&ocirc;nica,    caracterizada pela queixa de ard&ecirc;ncia em uma mucosa oral onde nenhuma    les&atilde;o foi identificada.<SUP>1</SUP> Apesar do grande n&uacute;mero de    publica&ccedil;&otilde;es sobre esta patologia, sua patog&ecirc;nese e tratamento    continuam pouco esclarecidos, bem como o seu conhecimento pelos profissionais    de odontologia.<SUP>2</SUP> </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Objetivo deste    trabalho &eacute; caracterizar a SAB quanto &agrave;s suas formas de apresenta&ccedil;&atilde;o    e diagn&oacute;stico e realizar uma revis&atilde;o sistematizada sobre a etiologia    e tratamento desta altera&ccedil;&atilde;o. </font>     <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><B>    <br>   Epidemiologia e caracteriza&ccedil;&atilde;o</B> </font>      ]]></body>
<body><![CDATA[<P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">A preval&ecirc;ncia    da SAB na literatura &eacute; vari&aacute;vel, com taxas entre 3,7 % e 5,4 %,    provavelmente devido &agrave; diverg&ecirc;ncia de crit&eacute;rios utilizados    para o diagn&oacute;stico da altera&ccedil;&atilde;o.<SUP>3,4</SUP> O sexo feminino    &eacute; preferencialmente afetado, sendo que 86 % a 90 % das mulheres com os    sintomas j&aacute; passaram pela menopausa.<SUP>3-7</SUP> Apesar de pessoas    de meia idade e idosos serem alvos preferenciais da BMS, uma ampla faixa et&aacute;ria    pode ser acometida. As varia&ccedil;&otilde;es de idade v&atilde;o de 25 a 97    anos,<SUP>8,9</SUP> e a idade m&eacute;dia de acometimento encontra-se entre    54 a 71,2 anos. </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">O sintoma principal,    e que caracteriza a SAB, &eacute; a sensa&ccedil;&atilde;o de ard&ecirc;ncia    em uma mucosa sem les&otilde;es, no entanto, alguns pacientes podem relatar    tamb&eacute;m calor, fisgadas, tremor, coceira, dor, incha&ccedil;o, sensa&ccedil;&atilde;o    de corpo estranho ou sensa&ccedil;&atilde;o de queimadura com l&iacute;quido    quente.<SUP>6,7 </SUP>Os sintomas podem estar restritos a um local espec&iacute;fico    da cavidade oral ou afetar v&aacute;rias regi&otilde;es da mucosa, e embora    os 2/3 anteriores da l&iacute;ngua sejam mais afetados, qualquer s&iacute;tio    bucal pode estar envolvido.<SUP>3,5-6,8</SUP> </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">A intensidade da    ard&ecirc;ncia na SAB &eacute; vari&aacute;vel,<SUP>3,6,7</SUP> e pode ser acompanhada    por n&aacute;usea, dores de cabe&ccedil;a e vertigem; aumentar com a tens&atilde;o,    fadiga, o ato de falar e consumo de comidas quentes; e diminuir com o sono,    com a alimenta&ccedil;&atilde;o, com comidas frias, com o trabalho, com distra&ccedil;&otilde;es    e consumo de &aacute;lcool.<SUP>5</SUP> </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">A partir da an&aacute;lise    do per&iacute;odo e dura&ccedil;&atilde;o da ard&ecirc;ncia e dor s&atilde;o    descritos tr&ecirc;s tipos diferentes de manifesta&ccedil;&otilde;es para a    SAB:<SUP>10</SUP> O Tipo 1 &eacute; caracterizado pela aus&ecirc;ncia de sintomas    pela manh&atilde;, ao acordar, mas com o transcorrer do dia a dor se inicia    e aumenta progressivamente, atingindo seu ponto mais intenso no in&iacute;cio    da noite; no Tipo 2 h&aacute; sensa&ccedil;&atilde;o cont&iacute;nua de queima&ccedil;&atilde;o    durante o dia, desde o momento que o indiv&iacute;duo acorda; e o Tipo 3 &eacute;    caracterizado por sintomas intermitentes, apresentando dias sem sintomas e acometimento    de s&iacute;tios menos comuns como o assoalho bucal e a garganta.<SUP>10 </SUP>    </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Os sintomas dolorosos    podem ser acompanhados pela queixa de boca seca e de altera&ccedil;&atilde;o    no paladar.<SUP>11</SUP> O percentual de pacientes com sensa&ccedil;&atilde;o    de boca seca varia bastante entre diferentes trabalhos (30 % a 75 %) e nem sempre    este sintoma est&aacute; associado &agrave; redu&ccedil;&atilde;o do fluxo salivar.<SUP>3,6-8    </SUP>Para alguns autores, a secura bucal em pacientes com SAB se deve a altera&ccedil;&otilde;es    locais ou sist&ecirc;micas, sem associa&ccedil;&atilde;o com a s&iacute;ndrome,    tais como o uso de medicamentos, ansiedade e estresse.<SUP>3,12</SUP> </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">As altera&ccedil;&otilde;es    relacionadas ao paladar s&atilde;o relatadas entre 11 % at&eacute; 69 % dos    pacientes, em duas formas de apresenta&ccedil;&atilde;o: presen&ccedil;a de    um sabor persistente, amargo ou met&aacute;lico; ou altera&ccedil;&atilde;o    na percep&ccedil;&atilde;o do sabor com aumento da percep&ccedil;&atilde;o para    o sabor amargo e para o sabor &aacute;cido, e diminui&ccedil;&atilde;o da percep&ccedil;&atilde;o    para o doce. Para o sabor salgado, metade dos pacientes relata aumento da percep&ccedil;&atilde;o    e a outra metade relata diminui&ccedil;&atilde;o.<SUP>3,5,6</SUP> </font>      <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><B>    <br>   Diagn&oacute;stico e etiolog&iacute;a</B> </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Os crit&eacute;rios    utilizados para o diagn&oacute;stico da SAB s&atilde;o vari&aacute;veis, o que    torna dif&iacute;cil a compara&ccedil;&atilde;o entre os estudos. Muitos crit&eacute;rios    foram propostos, entretanto, alguns s&atilde;o excessivamente excludentes.<SUP>13    </SUP>Em geral, o sintoma principal, caracterizado pela sensa&ccedil;&atilde;o    de ard&ecirc;ncia (ou outra sensa&ccedil;&atilde;o dolorosa), deve ter as seguintes    caracter&iacute;sticas: a sensa&ccedil;&atilde;o deve ser sentida profundamente    na mucosa; deve estar presente h&aacute; mais de 4-6 meses enquadrando-se em    algum padr&atilde;o de manifesta&ccedil;&atilde;o;<SUP>10</SUP> n&atilde;o deve    interferir com o sono; deve sofrer remiss&atilde;o durante a alimenta&ccedil;&atilde;o.    Outros sintomas poder&atilde;o ser identificados: sensa&ccedil;&atilde;o de    boca seca; altera&ccedil;&otilde;es no paladar; altera&ccedil;&otilde;es sensoriais    e altera&ccedil;&otilde;es psicol&oacute;gicas como ansiedade e depress&atilde;o.<SUP>13</SUP>    </font>      ]]></body>
<body><![CDATA[<P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">A presen&ccedil;a    desses sintomas deve ser comparada com a investiga&ccedil;&atilde;o cl&iacute;nica    da mucosa oral do paciente. Na presen&ccedil;a de quaisquer altera&ccedil;&otilde;es    na mucosa que possam estar relacionadas aos sintomas o diagn&oacute;stico de    SAB &eacute; adiado at&eacute; que se realize o tratamento da les&atilde;o de    mucosa e se observe a remiss&atilde;o ou n&atilde;o dos sintomas. Se estes persistirem    ap&oacute;s a resolu&ccedil;&atilde;o da les&atilde;o, &eacute; feito o diagn&oacute;stico    de SAB, ou SAB complicada.<SUP>13</SUP> Todavia, se n&atilde;o houver altera&ccedil;&otilde;es    cl&iacute;nicas na mucosa desse paciente, o diagn&oacute;stico inicial de SAB    &eacute; mantido. </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">O passo seguinte,    ap&oacute;s o diagn&oacute;stico, &eacute; a estratifica&ccedil;&atilde;o da    doen&ccedil;a em SAB prim&aacute;ria ou SAB secund&aacute;ria.<SUP>13</SUP>    A SAB prim&aacute;ria, tamb&eacute;m chamada de idiop&aacute;tica, &eacute;    observada quando n&atilde;o se encontram fatores predisponentes associados ao    desenvolvimento da s&iacute;ndrome. J&aacute; na SAB secund&aacute;ria &eacute;    poss&iacute;vel a identifica&ccedil;&atilde;o e associa&ccedil;&atilde;o com    fatores predisponentes de diferentes categorias e na maioria das vezes, ela    ser&aacute; sens&iacute;vel ao tratamento para a condi&ccedil;&atilde;o associada.    Os fatores predisponentes que podem estar associados &agrave; SAB secund&aacute;ria    s&atilde;o v&aacute;rios, mas em geral podem ser classificados em 5 grupos:    locais, sist&ecirc;micos, medicamentosos, neurol&oacute;gicos e psicol&oacute;gicos.    &Eacute; comum, no desenvolvimento da doen&ccedil;a a participa&ccedil;&atilde;o    de causas de diferentes grupos. </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Fatores locais    </I>- Infec&ccedil;&otilde;es por <I>Candida albicans</I> e <I>Helicobacter    pylori</I>, na mucosa bucal podem se manifestar de forma sub-cl&iacute;nica    e produzir sintomas de ard&ecirc;ncia bucal sem promover altera&ccedil;&otilde;es    cl&iacute;nicas.<SUP>14,15</SUP> A ocorr&ecirc;ncia destas infec&ccedil;&otilde;es    pode ser facilitada pela ocorr&ecirc;ncia de xerostomia ou altera&ccedil;&otilde;es    na composi&ccedil;&atilde;o salivar,<SUP>7</SUP> ou at&eacute; mesmo pela presen&ccedil;a    de diabetes mellitus descompensada.<SUP>15</SUP> A rela&ccedil;&atilde;o entre    o uso de pr&oacute;tese dent&aacute;ria e a SAB j&aacute; foi bastante abordada;<SUP>10,16</SUP>    mas uma aten&ccedil;&atilde;o maior tem sido dada aos casos em que a pr&oacute;tese    se encontra mal adaptada, seja alterando a dimens&atilde;o vertical de oclus&atilde;o    ou comprometendo o espa&ccedil;o lingual. As m&aacute;s-adapta&ccedil;&otilde;es    induzir&atilde;o altera&ccedil;&otilde;es musculares e h&aacute;bitos parafuncionais,    que podem culminar com altera&ccedil;&otilde;es neurop&aacute;ticas dolorosas    na cavidade oral.<SUP>17</SUP> </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Fatores sist&ecirc;micos    </I>- As altera&ccedil;&otilde;es sist&ecirc;micas que causam sintomas de ard&ecirc;ncia    bucal sem promover altera&ccedil;&otilde;es cl&iacute;nicas locais s&atilde;o    muitas, ser&atilde;o abordadas aqui apenas as principais. Pacientes com SAB    s&atilde;o 3,58 vezes mais propensos a desenvolver problemas gastrointestinais    do que pessoas sem SAB principalmente gastrite, refluxo esof&aacute;gico e flatul&ecirc;ncia.<SUP>4,7,9,17,18</SUP>    Entretanto, uma clara rela&ccedil;&atilde;o entre essas altera&ccedil;&otilde;es    ainda n&atilde;o foi descrita. A ocorr&ecirc;ncia de infec&ccedil;&atilde;o    por <I>Helicobacter pylori</I> na mucosa g&aacute;strica e na mucosa oral, concomitantemente,    tem sido estudada e cogitada como uma poss&iacute;vel causa da ard&ecirc;ncia    bucal.<SUP>4,14</SUP> </font>      <P>    <br>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">A diabetes mellitus    (DM) tem sido constantemente relacionada &agrave; SAB.<SUP>10,15,16</SUP> A    avalia&ccedil;&atilde;o de pacientes com DM e SAB em compara&ccedil;&atilde;o    &agrave; pacientes com DM que n&atilde;o apresentavam a SAB, mostrou que os    primeiros, al&eacute;m de serem preferencialmente do sexo feminino, apresentavam    uma neuropatia perif&eacute;rica relacionada ao diabetes. Esta neuropatia denominada    polineuropatia sim&eacute;trica distal, foi considerada a causa da SAB nesses    pacientes.<SUP>19</SUP> </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Muitos pacientes    com altera&ccedil;&otilde;es tireoidianas apresentam sintomas semelhantes aos    da SAB. Os horm&ocirc;nios tireoidianos atuam na matura&ccedil;&atilde;o das    papilas gustativas, assim em pacientes com hipofun&ccedil;&atilde;o ou disfun&ccedil;&atilde;o    tireoidiana o paladar fica comprometido. Essa altera&ccedil;&atilde;o ocorre    principalmente em grupo espec&iacute;fico de indiv&iacute;duos denominados de    <I>supertasters</I>, que s&atilde;o pessoas que apresentam um n&uacute;mero    aumentado de papilas gustativas. Em situa&ccedil;&otilde;es normais, as fibras    nervosas do paladar e as fibras nociceptivas conectadas ao SNC inibem a &aacute;rea    do c&eacute;rebro que recebe est&iacute;mulos &aacute;lgicos. Nas altera&ccedil;&otilde;es    tireoidianas, a inibi&ccedil;&atilde;o das fibras nervosas aferentes do paladar    pode desencadear um aumento da sensibilidade dos tecidos orais ao tato, a est&iacute;mulos    t&eacute;rmicos e a est&iacute;mulos dolorosos, tendo como resultado final a    dor, queima&ccedil;&atilde;o e incha&ccedil;o na mucosa oral.<SUP>19-21</SUP>    </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">A preval&ecirc;ncia    de SAB entre pacientes com doen&ccedil;a de Parkinson foi considerada maior    do que entre a popula&ccedil;&atilde;o em geral principalmente entre aqueles    que estavam em tratamento com levodopa como poss&iacute;vel efeito colateral    deste medicamento.<SUP>22</SUP><B> </B>A dopamina possua um papel inibidor na    modula&ccedil;&atilde;o central da dor, outros autores<SUP>23</SUP> atribu&iacute;ram    os sintomas da SAB nestes pacientes h&aacute; uma diminui&ccedil;&atilde;o dos    n&iacute;veis de dopamina end&oacute;gena.<SUP> </SUP>Nenhuma das duas hip&oacute;teses,    at&eacute; o momento, foi confirmada. </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">O climat&eacute;rio    tem sido relacionado &agrave; SAB h&aacute; muito tempo, sendo o desconforto    oral uma queixa comum entre as pacientes.<SUP>16</SUP> A entrada prematura na    menopausa pode ser um predisponente ao desenvolvimento da SAB.<SUP>9</SUP> </font>     ]]></body>
<body><![CDATA[<P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Fatores medicamentosos</I>:    Alguns medicamentos t&ecirc;m sido relacionados &agrave; ocorr&ecirc;ncia de    sintomas semelhantes aos da SAB.<SUP>3,4,7,24</SUP> entre eles, o efavirenz;    antiretroviral utilizado contra o HIV; medicamentos para reposi&ccedil;&atilde;o    hormonal; antidepressivos como a fluoxetina, sertralina e venlafaxina; clonazepam    e principalmente os antihipertensivos.<SUP>25 </SUP>Dentre as diversas classes    de anti-hipertensivos, apenas os inibidores do sistema renina-angiotensina (captopril,    enalapril e lisinopril) e os antagonistas do receptor de angiotensina II (eprosartan    e candesartan), foram relacionados com o surgimento da SAB.<SUP>24,25</SUP>    O uso de inibidores da enzima conversora de angiotensina, al&eacute;m dos sintomas    de ard&ecirc;ncia tamb&eacute;m induziu disgeusia.<SUP>24</SUP> A associa&ccedil;&atilde;o    da SAB com o uso de diur&eacute;ticos tamb&eacute;m &eacute; relatada.<SUP>7</SUP>    </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Um estudo caso    controle mostrou que indiv&iacute;duos com SAB consumiam mais ansiol&iacute;ticos    do que os do grupo controle.<SUP>4</SUP> Entretanto, &eacute; dif&iacute;cil    determinar se o consumo deste tipo de medicamento &eacute; a causa da SAB, ou    se os sintomas cr&ocirc;nicos da SAB est&atilde;o promovendo altera&ccedil;&otilde;es    psicol&oacute;gicas que requerem consumo desse tipo de medica&ccedil;&atilde;o.    Al&eacute;m destes, um consumo significantemente maior de L-tiroxinas utilizadas    no tratamento de hipotiroidismo foi detectado em pacientes com SAB<SUP> </SUP>refor&ccedil;ando<SUP>    </SUP>a associa&ccedil;&atilde;o apresentada anteriormente.<SUP>4,20,21</SUP>    </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Fatores neurol&oacute;gicos</I>:    Dor em forma de queima&ccedil;&atilde;o &eacute; caracter&iacute;stica de v&aacute;rias    condi&ccedil;&otilde;es cr&ocirc;nicas associadas a danos neurais. Dores cr&ocirc;nicas    podem tamb&eacute;m estar associadas a altera&ccedil;&otilde;es no sistema nervoso    simp&aacute;tico induzindo mudan&ccedil;as no fluxo sang&uuml;&iacute;neo e    no funcionamento de gl&acirc;ndulas sudor&iacute;paras.<SUP>2</SUP> Entretanto,    evid&ecirc;ncias de que altera&ccedil;&otilde;es neurol&oacute;gicas s&atilde;o    fatores causadores da SAB surgiram em um per&iacute;odo relativamente recente.    Experimentos em pacientes com SAB, envolven a estimula&ccedil;&atilde;o el&eacute;trica    dos neur&ocirc;nios trigeminais envolvidos no reflexo de piscar, demonstraram    altera&ccedil;&otilde;es caracterizadas por limiares sens&oacute;rios aumentados    e dist&uacute;rbios na comunica&ccedil;&atilde;o das fibras nervosas com o sistema    nervoso central.<SUP>26</SUP> </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> Outros autores,<SUP>27</SUP>    tamb&eacute;m avalian o reflexo de piscar em pacientes com SAB, encontraram    entre as altera&ccedil;&otilde;es, neuropatia de fibras de pequeno di&acirc;metro    ou de grande di&acirc;metro e aumento da excitabilidade do sistema trigeminal.    Esses resultados evidenciaram que h&aacute; uma anormalidade generalizada, possivelmente    em m&uacute;ltiplos n&iacute;veis, no processamento da informa&ccedil;&atilde;o    somatosens&oacute;ria nestes pacientes. </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">As fibras nervosas    tamb&eacute;m foram avaliadas a partir de bi&oacute;psia da l&iacute;ngua de    pacientes com a SAB e estudo imunoistoqu&iacute;mico. Os resultados demonstraram    que pacientes com SAB persistente possuem uma neuropatia sens&oacute;ria das    fibras pequenas trigeminais, caracterizada pela perda significante das fibras    nervosas epiteliais e sub-papilares. Tamb&eacute;m foi observado que havia uma    diminui&ccedil;&atilde;o da densidade das fibras nervosas amiel&iacute;nicas    no epit&eacute;lio, assim como um desarranjo difuso dos ax&ocirc;nios. A densidade    das fibras nervosas epidermais mostrou associa&ccedil;&atilde;o negativa com    a dura&ccedil;&atilde;o da neuropatia, quanto maior a dura&ccedil;&atilde;o    dos sintomas menor era a densidade nervosa. Al&eacute;m disso, foi observado    que as fibras nervosas epiteliais s&atilde;o amiel&iacute;nicas, sugerindo uma    fun&ccedil;&atilde;o semelhante a nociceptores polimodais. Essas fibras nervosas    epiteliais possuem intera&ccedil;&otilde;es sin&aacute;pticas com bot&otilde;es    gustativos das papilas fungiformes, e assim, sua estimula&ccedil;&atilde;o pode    induzir uma sensa&ccedil;&atilde;o de queima&ccedil;&atilde;o e afetar a percep&ccedil;&atilde;o    gustativa. Isso poderia explicar porque a disgeusia &eacute; um sintoma freq&uuml;ente    na SAB. Al&eacute;m disso, a degenera&ccedil;&atilde;o axonal pode induzir uma    sensibiliza&ccedil;&atilde;o da fibra nervosa e ser respons&aacute;vel pela    hiperalgesia persistente. Os autores sugerem que a bi&oacute;psia de l&iacute;ngua    possa ser utilizada como auxiliar no diagn&oacute;stico da SAB.<SUP>28</SUP>    </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Outros estudos<SUP>29</SUP>    demonstraram que o fluxo sang&uuml;&iacute;neo da mucosa bucal de pacientes    com SAB, frente a um est&iacute;mulo t&eacute;rmico, era maior do que nos pacientes    sadios, principalmente no palato. Estes resultados sugerem que dist&uacute;rbios    na regula&ccedil;&atilde;o da circula&ccedil;&atilde;o mucosa possam fazer parte    do espectro da SAB, podendo ter &iacute;ntima rela&ccedil;&atilde;o com altera&ccedil;&otilde;es    na inerva&ccedil;&atilde;o aut&ocirc;noma da cavidade oral. </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Fatores psicol&oacute;gicos:</I>    Altera&ccedil;&otilde;es psicol&oacute;gicas s&atilde;o constantemente encontradas    em pacientes com SAB,<SUP>3,9,11,30,31</SUP> entre essas altera&ccedil;&otilde;es    podemos destacar a ansiedade, depress&atilde;o, obsess&atilde;o, somatiza&ccedil;&atilde;o    e hostilidade.<SUP>31</SUP> Al&eacute;m disso, o consumo de medicamentos psicotr&oacute;picos    parece ser significativamente maior entre estes pacientes quando comparados    a indiv&iacute;duos sem SAB.<SUP>3,8,9</SUP> Embora diversos autores tenham    sugerido que a SAB poderia ser um sintoma decorrente dessas desordens,<SUP>31,32</SUP>    o contr&aacute;rio tamb&eacute;m &eacute; poss&iacute;vel e as altera&ccedil;&otilde;es    psicol&oacute;gicas podem ser decorrentes da situa&ccedil;&atilde;o cr&ocirc;nica    de dor provocada pela SAB, pelas dificuldades no tratamento ou at&eacute; mesmo    pela incerteza do diagn&oacute;stico.<SUP>4,30</SUP> Em outras altera&ccedil;&otilde;es    neurop&aacute;ticas cr&ocirc;nicas os achados de altera&ccedil;&otilde;es psicol&oacute;gicas    s&atilde;o comuns, e estes s&atilde;o considerados efeitos da dor.<SUP>2,13</SUP>    </font>      <P>    <br>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><B>Tratamento</B>    </font>     ]]></body>
<body><![CDATA[<P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Ap&oacute;s o diagn&oacute;stico    da SAB, antes de iniciar o tratamento, &eacute; necess&aacute;ria a estratifica&ccedil;&atilde;o    da doen&ccedil;a em SAB prim&aacute;ria ou SAB secund&aacute;ria. Esta estratifica&ccedil;&atilde;o    se baseia na identifica&ccedil;&atilde;o de quaisquer fatores predisponentes,    descritos anteriormente, passo fundamental para a determina&ccedil;&atilde;o    da forma terap&ecirc;utica a ser empregada. Para os casos de SAB secund&aacute;ria    o tratamento muitas dever&aacute; ser feito por uma equipe multiprofissional,    considerando que fatores locais e sist&ecirc;micos podem atuar conjuntamente    e problemas psicol&oacute;gicos decorrentes dos sintomas cr&ocirc;nicos podem    estar presentes. Algumas vezes, o tratamento espec&iacute;fico para a altera&ccedil;&atilde;o    indutora da SAB secund&aacute;ria, pode n&atilde;o resultar em cura dos sintomas    sugerindo que o fator predisponente pode ter induzido altera&ccedil;&otilde;es    neurop&aacute;ticas irrevers&iacute;veis, e requerendo que o paciente receba    uma terapia espec&iacute;fica que atue na resolu&ccedil;&atilde;o de danos neurop&aacute;ticos.<SUP>13</SUP>    </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">O tratamento da    SAB prim&aacute;ria &eacute; uma tarefa mais dif&iacute;cil, uma vez que a causa    da altera&ccedil;&atilde;o &eacute; desconhecida. Neste caso, &eacute; feito    o tratamento sintom&aacute;tico da s&iacute;ndrome, visando tratar ou aliviar    os sintomas dolorosos. Na literatura s&atilde;o diversas as op&ccedil;&otilde;es    terap&ecirc;uticas, apresentaremos aqui as mais comuns: </font>     <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>&Aacute;cido    alfa lip&oacute;ico: </I>O &aacute;cido alfa-lip&oacute;ico atua na estimula&ccedil;&atilde;o    de fatores de crescimento de nervos, possui efeito neuroprotetor e tem sido    usado em estudos laboratoriais e cl&iacute;nicos que avaliam a repara&ccedil;&atilde;o    de danos neurais, especialmente em casos de polineuropatia diab&eacute;tica.<SUP>33</SUP>    A utiliza&ccedil;&atilde;o do &aacute;cido alfa-lip&oacute;ico via oral em pacientes    com SAB prim&aacute;ria levou a uma melhora dos sintomas em 76 % dos pacientes,    embora nenhum caso apresentasse resolu&ccedil;&atilde;o completa dos sintomas.<SUP>33    </SUP>Estudo posterior com altera&ccedil;&atilde;o da posologia e per&iacute;odo    de tratamento levou &agrave; resolu&ccedil;&atilde;o completa dos sintomas em    13 % dos pacientes, e em 74 % ocorreu grande melhora. Um acompanhamento de 12    meses demonstrou que a melhora obtida foi mantida em 73 % dos pacientes.<SUP>34</SUP>    Pacientes com SAB e com dist&uacute;rbios psicol&oacute;gicos previamente submetidos    a tratamento com tranq&uuml;ilizantes n&atilde;o obtiveram melhora satisfat&oacute;ria    de seus sintomas com o tratamento com &aacute;cido alfa lip&oacute;ico podendo    ser necess&aacute;ria a associa&ccedil;&atilde;o com a terapia cognitiva.<SUP>35    </SUP>Embora<SUP> </SUP>n&atilde;o se conhe&ccedil;a ainda o exato mecanismo    de a&ccedil;&atilde;o desta medica&ccedil;&atilde;o na SAB, sabe-se que o &aacute;cido    alfa-lip&oacute;ico eleva os n&iacute;veis celulares de glutationa. Baixos n&iacute;veis    de glutationa podem causar estresse oxidativo, inflama&ccedil;&otilde;es e dano    neural, induzindo o desenvolvimento de um quadro de neuropatia perif&eacute;rica.    Como a SAB pode se desenvolver a partir de uma neuropatia relacionada &agrave;    produ&ccedil;&atilde;o de radicais livres e baixos n&iacute;veis de glutationa    intracelular, o &aacute;cido alfa-lip&oacute;ico pode ser ben&eacute;fico pelo    menos para alguns destes pacientes.<SUP>33-35</SUP> </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Capsaicina</I>:    A aplica&ccedil;&atilde;o da capsaicina t&oacute;pica em pacientes com neuropatias    faciais &eacute; eficiente na melhora nos sintomas,<SUP>36</SUP> entretanto,    o uso do creme de capsaicina pode ter limita&ccedil;&otilde;es quando usado    na cavidade oral, devido &agrave;s dificuldades inerentes &agrave; aplica&ccedil;&atilde;o,    manuten&ccedil;&atilde;o da medica&ccedil;&atilde;o no local e a presen&ccedil;a    do sabor amargo da capsaicina t&oacute;pica. Com o uso da capsaicina sist&ecirc;mica    (0,25 % via oral por 1 m&ecirc;s) em pacientes com SAB prim&aacute;ria houve    redu&ccedil;&atilde;o significativa dos sintomas.<SUP>37</SUP> Os efeitos adversos    da capsaicina se apresentaram na forma de desconforto g&aacute;strico que aumentava    progressivamente com o decorrer do tratamento. A efic&aacute;cia da capsaicina    em v&aacute;rios pacientes corrobora com a id&eacute;ia da neuropatia na origem    da SAB. </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Benzodiazep&iacute;nicos</I>:    Os benzodiazep&iacute;nicos t&ecirc;m sido empregados no tratamento de condi&ccedil;&otilde;es    dolorosas incluindo a neuralgia trigeminal e neuropatia diab&eacute;tica. Os    principais benzodiazep&iacute;nicos utilizados s&atilde;o o clordiazep&oacute;xido    (Libruim) e o clonazepam. Estes medicamentos s&atilde;o agonistas do receptor    GABA e se ligam centralmente ou perifericamente, promovendo inibi&ccedil;&atilde;o    da dor.<SUP>38</SUP> A utiliza&ccedil;&atilde;o do clonazepam no tratamento    de pacientes com SAB levou a uma redu&ccedil;&atilde;o dos sintomas dolorosos    em 70 % dos pacientes, e surpreendentemente houve redu&ccedil;&atilde;o na queixa    de dist&uacute;rbios do paladar. A medica&ccedil;&atilde;o foi mais eficaz quando    empregada em baixas doses, principalmente em indiv&iacute;duos jovens e em pacientes    que apresentavam os sintomas h&aacute; pouco tempo. Efeitos colaterais caracterizados    por sonol&ecirc;ncia e altera&ccedil;&otilde;es de humor influenciaram a interrup&ccedil;&atilde;o    do tratamento em alguns pacientes. Esses efeitos colaterais eram mais sentidos    quando altas doses do medicamento eram requeridas para reduzir a queima&ccedil;&atilde;o    oral.<SUP>38</SUP> A posologia empregada consistiu em: 0,25 mg antes de dormir    por 1 semana. A dose m&aacute;xima por dia n&atilde;o deveria ultrapassar 3    doses de 1 mg. O clordiazep&oacute;xido em doses de 5 a 10 mg 3 vezes ao dia    levou a uma completa remiss&atilde;o dos sintomas em 14 % dos pacientes e 64    % do total apresentou alguma melhora no quadro cl&iacute;nico. O prolongamento    do tratamento em casos n&atilde;o responsivos n&atilde;o teve nenhum efeito.    Em alguns pacientes os benef&iacute;cios do tratamento persistiram ap&oacute;s    a interrup&ccedil;&atilde;o da terapia, em outros, entretanto, um tratamento    cont&iacute;nuo ou intermitente foi necess&aacute;rio. Os resultados obtidos    com o diazepam 6 a 15 mg por dia, foram semelhantes aos resultados encontrados    para o clordiazep&oacute;xido.<SUP>8</SUP> Apesar da efic&aacute;cia dos benzodiazep&iacute;nicos    no tratamento da dor, o seu uso durante longos per&iacute;odos de tempo &eacute;    question&aacute;vel devido aos seus efeitos colaterais, entre eles a depend&ecirc;ncia    qu&iacute;mica e a indu&ccedil;&atilde;o ou agravamento de estados depressivos.    Portanto, ansiol&iacute;ticos s&oacute; devem ser usados em pacientes que respondem    bem ao tratamento, n&atilde;o devem ser prescritos em grandes quantidades, impedindo    assim o abuso no uso da droga e o profissional deve avaliar constantemente o    surgimento de efeitos colaterais, diminuindo ou descontinuando o tratamento    nesses casos.<SUP>2</SUP> </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Antidepressivos</I>:    Inicialmente os antidepressivos foram introduzidos no tratamento da SAB devido    a constante ocorr&ecirc;ncia de dist&uacute;rbios psicol&oacute;gicos associados.    Evid&ecirc;ncias sugerem que esses medicamentos produzem analgesia independentemente    da sua a&ccedil;&atilde;o sobre a depress&atilde;o. O efeito sobre a dor &eacute;    sentido tanto com altas quanto com baixas doses do medicamento. A literatura    recomenda o uso de antidepressivos para o tratamento de dores cr&ocirc;nicas    n&atilde;o-malignas, apenas quando todas as outras op&ccedil;&otilde;es terap&ecirc;uticas    falharam ou quando dist&uacute;rbios psicol&oacute;gicos, como a depress&atilde;o,    acompanham a dor. Dentre os antidepressivos, os tric&iacute;clicos, como a amitriptilina,    parecem ser os mais eficazes no tratamento da SAB.<SUP>2</SUP> Baixas doses    de amitriptilina (25 a 75 mg por dia) podem ser administradas inicialmente em    pacientes n&atilde;o deprimidos. Entretanto, a quantidade administrada deve    ser ajustada de acordo com a resposta de cada paciente.<SUP>13 </SUP>Doses,    com efeito, antidepressor, devem ser reservadas apenas para pacientes deprimidos,    e devem ser prescritas em conjunto com o m&eacute;dico psiquiatra.<SUP>2</SUP>    </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Terapia cognitiva</I>:    O insucesso no tratamento de pacientes com SAB prim&aacute;ria, atrav&eacute;s    da terapia medicamentosa, pode indicar a necessidade de implementa&ccedil;&atilde;o    da terapia cognitiva. O objetivo desta t&eacute;cnica &eacute; permitir a cada    paciente compreender as causas dos seus sintomas. Assim, os pacientes s&atilde;o    encorajados a refletir sobre a possibilidade de que esses sintomas sejam uma    forma de se protegerem contra os seus problemas emocionais.<SUP>13</SUP> Alguns    autores acreditam que nos casos em que as terapias convencionais n&atilde;o    tenham surtido efeito, o profissional pode lan&ccedil;ar m&atilde;o dessa op&ccedil;&atilde;o    terap&ecirc;utica, entretanto, essa n&atilde;o deve ser a primeira op&ccedil;&atilde;o    no tratamento.<SUP>32</SUP> </font>     <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">    <br>   Alguns trabalhos<SUP>39,40</SUP> t&ecirc;m sugerido outras op&ccedil;&otilde;es    terap&ecirc;uticas como o cloridrato de benzidamina e a lafutidina, entretanto    uma quantidade maior de evid&ecirc;ncias &eacute; necess&aacute;ria para comprovar    a efic&aacute;cia desses medicamentos na SAB. </font>      ]]></body>
<body><![CDATA[<P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Ainda que entre    os pacientes com SAB, a maioria n&atilde;o apresente redu&ccedil;&atilde;o do    fluxo salivar, recomenda-se que o paciente seja submetido &agrave; mensura&ccedil;&atilde;o    do fluxo para a exclus&atilde;o de altera&ccedil;&otilde;es que estejam ocorrendo    concomitantemente a SAB, e para que quando necess&aacute;rio, seja implementada    alguma terapia de restabelecimento do fluxo salivar normal. </font>      <P>&nbsp;     <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><B><font size="3">CONCLUS&Atilde;O</font></B>    </font>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">A SAB &eacute;    uma doen&ccedil;a complexa devido a diversidade de sintomas, multifatoriedade,    dificuldade de tratamento e devido a caracter&iacute;sticas psicol&oacute;gicas    particulares desses pacientes. O diagn&oacute;stico correto &eacute; o passo    principal para o sucesso na terapia. Novas pesquisas s&atilde;o necess&aacute;rias    para elucidar, com precis&atilde;o, as causas da SAB, em especial a forma prim&aacute;ria.    O conhecimento da altera&ccedil;&atilde;o pelo profissional de sa&uacute;de    &eacute; a conduta mais importante na melhora do manejo desses pacientes. </font>      <P>&nbsp;     <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><B><font size="3">REFER&Ecirc;NCIAS    BIBLIOGR&Aacute;FICAS</font></B> </font>      <!-- ref --><P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">1. Lamey PJ, Lamb    AB. Prospective study of aetiological factors in burning mouth syndrome. Br    Med J. 1988;296:1243-6. </font>    <!-- ref --><P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">2. Ship JA, Grushka    M, Lipton JA, Mott AE, Sessle BJ, Dionne RA. Burning mouth syndrome: an update.    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<body><![CDATA[<P>&nbsp;     <P>      <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Recibido: 10 de    agosto de 2010.    <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Aprobado:    30 de septiembre de 2010.</font>     <P>&nbsp;     <P>&nbsp;      <P>      <P>      <P><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><I>Dra. Maria C&aacute;ssia    Ferreira de Aguiar. </I>Departamento de Cl&iacute;nica, Patologia e Cirurgia    Odontol&oacute;gicas-Faculdade de Odontologia da UFMG. Belo Horizonte, MG-Brasil.<I>    </I>E-mail: <U><FONT  COLOR="#0000ff"><a href="mailto:cassiafa@ufmg.br">cassiafa@ufmg.br</a></FONT></U>    </font>      ]]></body>
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