<?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>S0034-75072018000400008</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Excisão de um fibroma de células gigantes com laser cirúrgico]]></article-title>
<article-title xml:lang="es"><![CDATA[Excisión de un fibroma de células gigantes con láser quirúrgico]]></article-title>
<article-title xml:lang="en"><![CDATA[Giant-cell fibroma removal with surgical laser]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de Morais Neves]]></surname>
<given-names><![CDATA[Lucas Emmanuell]]></given-names>
</name>
<xref ref-type="aff" rid="A1"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gonçalves de Carvalho]]></surname>
<given-names><![CDATA[Sérgio Henrique]]></given-names>
</name>
<xref ref-type="aff" rid="A1"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de Santana Sarmento]]></surname>
<given-names><![CDATA[Dmitry José]]></given-names>
</name>
<xref ref-type="aff" rid="A1"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[dos Santos Pereira]]></surname>
<given-names><![CDATA[Joabe]]></given-names>
</name>
<xref ref-type="aff" rid="A1"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gomes Agripino]]></surname>
<given-names><![CDATA[Gustavo]]></given-names>
</name>
<xref ref-type="aff" rid="A1"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aparecida Marinho]]></surname>
<given-names><![CDATA[Sandra]]></given-names>
</name>
<xref ref-type="aff" rid="A1"/>
</contrib>
</contrib-group>
<aff id="AA1">
<institution><![CDATA[,Universidade Estadual de Paraíba  ]]></institution>
<addr-line><![CDATA[Araruna PB]]></addr-line>
<country>Brasil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<volume>55</volume>
<numero>4</numero>
<fpage>1</fpage>
<lpage>10</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0034-75072018000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0034-75072018000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0034-75072018000400008&amp;lng=en&amp;nrm=iso"></self-uri><kwd-group>
<kwd lng="pt"><![CDATA[células gigantes]]></kwd>
<kwd lng="pt"><![CDATA[neoplasia bucal]]></kwd>
<kwd lng="pt"><![CDATA[lasers]]></kwd>
<kwd lng="es"><![CDATA[células gigantes]]></kwd>
<kwd lng="es"><![CDATA[neoplasias de la boca]]></kwd>
<kwd lng="es"><![CDATA[rayos láser]]></kwd>
<kwd lng="en"><![CDATA[giant cells]]></kwd>
<kwd lng="en"><![CDATA[mouth neoplasms]]></kwd>
<kwd lng="en"><![CDATA[lasers]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="right"> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>PRESENTACI&#211;N    DE CASO</b> </font></p>     <p>&nbsp; </p>     <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b> <font size="4">Excis&#227;o    de um fibroma de c&#233;lulas gigantes com laser cir&#250;rgico </font></b>    </font></p>     <p>&nbsp; </p>     <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b> <font size="3">Excisi&#243;n    de un fibroma de c&#233;lulas gigantes con l&#225;ser quir&#250;rgico </font></b>    </font></p>     <p>&nbsp; </p>     <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b><font size="3">Giant-cell    fibroma </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b><font size="3">removal</font></b></font>    <font size="3">with surgical laser</font></b> </font></p>     <p>&nbsp;</p>     <p>&nbsp; </p>     <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Lucas Emmanuell    de Morais Neves</b><b><sup>1</sup></b>     ]]></body>
<body><![CDATA[<br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>S&#233;rgio    Henrique Gon&#231;alves de Carvalho<sup>1</sup></b>     <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Dmitry    Jos&#233; de Santana Sarmento<sup>1</sup></b>     <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Joabe    dos Santos Pereira<sup>1</sup></b>     <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Gustavo    Gomes Agripino<sup>1</sup></b>     <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Sandra    Aparecida Marinho<sup>1</sup></b> </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><sup>1</sup> Universidade    Estadual da Para&#237;ba (UEPB). Araruna-PB, Brasil. </font></p>     <p>&nbsp;</p>     <p>&nbsp;</p> <hr>     <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>RESUMO</b>    </font></p>     <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Introdu&#231;&#227;o:</b>    O fibroma de c&#233;lulas gigantes &#233; uma neoplasia fibrosa benigna, considerada    rara, com fatores etiol&#243;gicos incertos e caracter&#237;sticas clinico-patol&#243;gicas    peculiares.     ]]></body>
<body><![CDATA[<br>   <b>Objetivo:</b> Descrever a ex&#233;rese do fibroma de c&#233;lulas gigantes,    em mucosa jugal direita, utilizando laser cir&#250;rgico.     <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Relato    de caso:</b> Paciente do sexo feminino, 33 anos, parda, atendida na cl&#237;nica    de Estomatologia da Universidade Estadual da Para&#237;ba, motivada por uma    les&#227;o neopl&#225;sica, de crescimento lento em regi&#227;o de mucosa jugal    direita. Clinicamente, observou-se massa tumoral &#250;nica, assintom&#225;tica,    com aproximadamente dois cent&#237;metros, de base s&#233;ssil, normocorada,    de consist&#234;ncia firme e superf&#237;cie lisa. Ap&#243;s exame cl&#237;nico,    foi realizada uma bi&#243;psia excisional com fins diagn&#243;sticos, utilizando    o laser cir&#250;rgico. O diagn&#243;stico, ap&#243;s o resultado do exame histopatol&#243;gico,    revelou um fibroma de c&#233;lulas gigantes. A abordagem da bi&#243;psia excisional,    al&#233;m de ter fins de diagn&#243;stico bucal, foi respons&#225;vel pelo tratamento    da les&#227;o, visto que proporcionou a remo&#231;&#227;o completa da patologia.    Optou-se por cicatriza&#231;&#227;o por segunda inten&#231;&#227;o, e para acelerar    esse processo, foi realizada aplica&#231;&#227;o local com laser de baixa pot&#234;ncia    de espectro de luz vermelha. No acompanhamento de sete dias, observou-se cicatriza&#231;&#227;o    adequada, com m&#237;nima altera&#231;&#227;o tecidual. Ap&#243;s oito meses,    notou-se regenera&#231;&#227;o tecidual adequada sem recidiva da les&#227;o.    <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Conclus&#227;o:</b>    A remo&#231;&#227;o de um fibroma de c&#233;lulas gigantes, utilizando laser    de diodo de alta pot&#234;ncia, se mostrou como uma abordagem terap&#234;utica    vi&#225;vel para o tratamento dessa patologia. </font></p>     <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Palavras-chave:</b>    c&#233;lulas gigantes; neoplasia bucal; lasers. </font></p> <hr>     <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>RESUMEN</b>    </font></p>     <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Introducci&#243;n:</b>    El fibroma de c&#233;lulas gigantes es una neoplasia fibrosa benigna, considerada    rara, con factores causales inciertos y caracter&#237;sticas cl&#237;nico-patol&#243;gicas    peculiares.     <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Objetivo:</b>    Describir la ex&#233;resis del fibroma de c&#233;lulas gigantes, en mucosa yugal    derecha, utilizando l&#225;ser quir&#250;rgico.     <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Presentaci&#243;n    del caso:</b> Paciente del sexo femenino, 33 a&#241;os, mulata, atendida en    la Cl&#237;nica de Estomatolog&#237;a de la Universidad Estatal de Para&#237;ba,    por una lesi&#243;n neopl&#225;sica, de crecimiento lento en regi&#243;n de    mucosa yugal derecha. Cl&#237;nicamente, se observ&#243; una masa tumoral &#250;nica,    asintom&#225;tica, de aproximadamente 2 cm, de base s&#233;sil, normocoloreada,    de consistencia firme y superficie lisa. Despu&#233;s del examen cl&#237;nico,    se realiz&#243; una biopsia excisional con fines diagn&#243;sticos, utilizando    el l&#225;ser quir&#250;rgico. El diagn&#243;stico, despu&#233;s del resultado    del examen histopatol&#243;gico, revel&#243; un fibroma de c&#233;lulas gigantes.    El abordaje de la biopsia excisional, adem&#225;s de tener fines de diagn&#243;stico    bucal, fue responsable del tratamiento de la lesi&#243;n, ya que proporcion&#243;    la remoci&#243;n completa de esta. Se opt&#243; por cicatrizaci&#243;n por segunda    intenci&#243;n, y para acelerar ese proceso, se realiz&#243; aplicaci&#243;n    local con l&#225;ser de baja potencia de espectro de luz roja. En el seguimiento    de siete d&#237;as, se observ&#243; una cicatrizaci&#243;n adecuada, con m&#237;nima    alteraci&#243;n h&#237;stica. Despu&#233;s de ocho meses, se not&#243; regeneraci&#243;n    h&#237;stica adecuada sin recidiva de la lesi&#243;n.     <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Conclusion</b><b>es</b><b>:</b>    La remoci&#243;n de un fibroma de c&#233;lulas gigantes, utilizando l&#225;ser    de diodo de alta potencia, se mostr&#243; como un abordaje terap&#233;utico    viable para el tratamiento de esa afecci&#243;n. </font></p>     <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Palabras clave:</b>    c&#233;lulas gigantes; neoplasias de la boca; rayos l&#225;ser. </font></p> <hr>     ]]></body>
<body><![CDATA[<p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>ABSTRACT</b>    </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Introduction:</b>    Giant-cell fibroma is a rare benign fibrous neoplasm of uncertain etiological    factors and peculiar clinical-pathological characteristics.    <br>   <b>Objective</b><b>:</b> To describe the excision of giant-cell fibroma in the    right jugal mucosa using surgical laser.    <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Case report</b><b>:</b>    A 33-year-old female patient, treated at the dental clinic of State University    of Para&#237;ba, due to neoplastic lesion, with slow growth in the region of    the right jugal mucosa. Clinically, a single, asymptomatic tumor mass of approximately    two centimeters, sessile, normocorated, with a firm consistency and a smooth    surface was observed. After clinical examination, an excisional biopsy was performed    for diagnostic purposes, using the surgical laser. The diagnosis, after the    histopathological examination, revealed a giant-cell fibroma. The management    of the excisional biopsy, in addition to having the purpose of oral diagnosis,    was responsible for the treatment of the lesion, since it provided its complete    removal. Second healing intention was chosen and, in order to accelerate this    process, a local application with low-power red-light spectrum laser was carried    out. At 7-day follow-up, adequate healing was observed, with minimal tissue    change. After eight months, adequate tissue regeneration was observed without    relapsed lesion.    <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Conclusions:</b>    Removal of a giant-cell fibroma using high-power diode laser was shown to be    a viable therapeutic approach for the treatment of this pathology. </font></p>     <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Keywords:</b>    giant cells; mouth neoplasms; lasers.</font></p>     <p>&nbsp; </p> <hr>     <p>&nbsp; </p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b><font size="3">INTRODU&#199;&#195;O</font></b>    </font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> O fibroma de c&#233;lulas    gigantes (FCG) &#233; uma les&#227;o fibrosa benigna, de caracter&#237;sticas    clinico-patol&#243;gicas peculiares, que representa aproximadamente de 2 % a    5 % de todas as prolifera&#231;&#245;es fibrosas que acometem a cavidade oral,    submetidas &#224; biopsia.<sup>1-6</sup> </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> Sua etiologia    n&#227;o est&#225; bem determinada,<sup>4,5,7</sup> pois ainda n&#227;o se pode    afirmar uma poss&#237;vel associa&#231;&#227;o com irrita&#231;&#245;es cr&#244;nicas    ou se se trata de um tumor verdadeiro. Uma poss&#237;vel indu&#231;&#227;o viral    tamb&#233;m j&#225; foi postulada como hip&#243;tese.<sup>4,7</sup> </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> Comumente, o FCG    &#233; diagnosticado nas tr&#234;s primeiras d&#233;cadas de vida, apresentando    uma discreta predile&#231;&#227;o pelo sexo feminino. Sua localiza&#231;&#227;o    mais frequente &#233; a gengiva inferior, seguida pelo &#225;pice e a borda    lateral de l&#237;ngua, mucosa jugal, l&#225;bio e palato.<sup>3,5-8</sup> Clinicamente,    apresenta-se como les&#227;o &#250;nica, assintom&#225;tica, de crescimento    lento, exof&#237;tica, pediculada ou s&#233;ssil, de superf&#237;cie papilar    ou lisa, apresentando, geralmente, pequenas propor&#231;&#245;es.<sup>3,5,6,8</sup>    Devido a seus aspectos inespec&#237;ficos, o diagn&#243;stico cl&#237;nico de    FCG torna-se dif&#237;cil<sup>4</sup>. O exame histopatol&#243;gico &#233; fundamental,    visto que suas caracter&#237;sticas podem ser clinicamente confundidas com papiloma,    fibroma, hiperplasia fibrosa e granuloma piog&#234;nico.<sup>5,7</sup> </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> O tratamento mais    adequado para o FGC &#233; a excis&#227;o cir&#250;rgica. Al&#233;m de ser utilizada    para fins diagn&#243;sticos, a bi&#243;psia excisional torna-se tamb&#233;m    uma abordagem terap&#234;utica.<sup>9</sup> </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> Com o advento    do <i>Light Amplification by Stimulated Emission of Radiation</i> (LASER), houve    a substitui&#231;&#227;o ou complementa&#231;&#227;o dos tratamentos cir&#250;rgicos    convencionais.<sup>10</sup> A utiliza&#231;&#227;o do laser de diodo de alta    pot&#234;ncia oferece ao tratamento de tumores benignos de tecido conjuntivo    fibroso novas perspectivas, com maior seguran&#231;a, excelente qualidade de    incis&#227;o, redu&#231;&#227;o do tempo cir&#250;rgico, capacidade de coagula&#231;&#227;o    local, aus&#234;ncia da necessidade de suturas e conforto p&#243;s-cir&#250;rgico.<sup>10-12</sup>    </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> Diante disso,    o prop&#243;sito do presente artigo &#233; descrever a conduta de ex&#233;rese    cir&#250;rgica realizada em um fibroma de c&#233;lulas gigantes localizado em    mucosa jugal direita, utilizando laser cir&#250;rgico de Diodo. </font></p>     <p>&nbsp; </p>     <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b><font size="3">RELATO    DE CASO</font></b> </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> Paciente do sexo    feminino, 33 anos, parda, buscou o servi&#231;o de Estomatologia Avan&#231;ada    da Universidade Estadual da Para&#237;ba (UEPB), na cidade de Araruna (PB),    motivada por uma les&#227;o de crescimento lento, em regi&#227;o de mucosa jugal    direita, com tempo de evolu&#231;&#227;o de aproximadamente doze meses, ocasionando    leve sintomatologia dolorosa ao trauma local, tal como mastiga&#231;&#227;o.    A paciente n&#227;o apresentava nenhuma altera&#231;&#227;o de sa&#250;de geral    digna de nota. Clinicamente, observou-se les&#227;o &#250;nica, assintom&#225;tica,    com aproximadamente dois cent&#237;metros em seu maior di&#226;metro, de base    s&#233;ssil, normocorada, de consist&#234;ncia firme e superf&#237;cie lisa.    As hip&#243;teses diagn&#243;sticas foram de hiperplasia fibrosa inflamat&#243;ria    (HFI) e fibroma verdadeiro. Foi, ent&#227;o, realizada uma bi&#243;psia excisional    com fins de diagn&#243;stico, inicialmente delimitando-se a les&#227;o, com    margem de seguran&#231;a de at&#233; 5 mm (<a href="#fig1">Fig. 1</a>), utilizando    Laser cir&#250;rgico de Diodo em comprimento de onda de 808 nm (Thera Lase Surgery,    DMC Ltda, S&#227;o Carlos, Brasil), fibra &#243;ptica de 0,4 mm de di&#226;metro,    pot&#234;ncia de 2,5 W em modo cont&#237;nuo, sob anestesia local com anest&#233;sico    do tipo Artica&#237;na a 4 % com adrenalina (Articaine). Todos os Equipamentos    de Prote&#231;&#227;o Individual (EPI) exigidos, tal como, &#243;culos de prote&#231;&#227;o    espec&#237;ficos para abordagens com lasers, foram utilizados durante todas    as condutas cl&#237;nica. </font></p>     <p align="center"><a name="fig1"></a><img src="/img/revistas/est/v55n4/f01_1749.jpg" width="389" height="443"></p>     ]]></body>
<body><![CDATA[<p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2">Ap&#243;s a remo&#231;&#227;o    total da les&#227;o, n&#227;o foi necess&#225;rio suturar, sendo a &#225;rea    deixada para cicatrizar por segunda inten&#231;&#227;o. O esp&#233;cime foi    enviado para exame histopatol&#243;gico cujo diagn&#243;stico revelou degenera&#231;&#227;o    hidr&#243;pica e atrofia do tecido epitelial pavimentoso estratificado paraceratinizado,    com proje&#231;&#245;es filiformes. No tecido conjuntivo, observou-se presen&#231;a    de fibroblastos volumosos, estrelados e multinucleados, em regi&#227;o subepitelial    (<a href="#fig2">Fig. 2</a>), condizente com FCG. </font></p>     <p align="center"><a name="fig2"></a><img src="/img/revistas/est/v55n4/f02_1749.jpg" width="468" height="356"></p>     <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2">Com finalidade    de bioestimula&#231;&#227;o tecidual, anti-inflamat&#243;rias, cicatrizantes    e analg&#233;sicas, foi utilizado a luz vermelha (660 nm) do laser de diodo    (Photon Lase; DMC Ltda, S&#227;o Carlos, Brasil), de baixa pot&#234;ncia (70    mw), dose de 1 J e tempo de 16 s, em modo continuo e pontual na regi&#227;o    de excis&#227;o, no per&#237;odo de p&#243;s operat&#243;rio imediato, bem como    no p&#243;s operat&#243;rio mediato de sete e 14 dias. No p&#243;s-operat&#243;rio    mediato de acompanhamento de 14 dias observou-se cicatriza&#231;&#227;o adequada,    com m&#237;nima altera&#231;&#227;o tecidual e aus&#234;ncia de sintomatologia    dolorosa.     <br>   A proserva&#231;&#227;o de um m&#234;s mostrou regenera&#231;&#227;o tecidual    adequada, sem sinal de recidiva da les&#227;o. Na proserva&#231;&#227;o de oito    meses (<a href="#fig3">Fig. 3</a>), n&#227;o houve evid&#234;ncias de recorr&#234;ncia    da les&#227;o e a paciente ainda encontra-se em acompanhamento pelo servi&#231;o.    </font></p>     <p align="center">&nbsp;</p>     <p align="center"><a name="fig3"></a><img src="/img/revistas/est/v55n4/f03_1749.jpg" width="432" height="318"></p>     <p>&nbsp; </p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b><font size="3">DISCUSS&#195;O</font></b>    </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> O presente caso    trata-se de<b> </b>uma les&#227;o rara, que foi descrita em 1974, ap&#243;s    reexame de 2000 amostras diagnosticadas como altera&#231;&#245;es hiperpl&#225;sicas    gengivais, no qual foi verificado que 108 destas apresentaram algumas caracter&#237;sticas    distintas, como presen&#231;a de grandes fibroblastos estrelados e multinucleados    localizados na l&#226;mina pr&#243;pria, pr&#243;ximos ao epit&#233;lio.<sup>2-5,8,13</sup>    Devido a estas caracter&#237;sticas, as amostras, anteriormente descritas como    hiperplasias fibrosas, fibromas ou p&#243;lipos fibroepiteliais, foram suficientemente    plaus&#237;veis para justificar esta reclassifica&#231;&#227;o.<sup>3</sup>    Sua localiza&#231;&#227;o, aspecto cl&#237;nico e seu tamanho, justificam a    maior raridade do presente caso. </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> A localiza&#231;&#227;o    da les&#227;o, neste caso, foi a mucosa jugal. Entretanto, a regi&#227;o mais    acometida &#233; a gengiva, principalmente a inferior<sup>1</sup>, seguida pela    l&#237;ngua. Mucosa jugal, l&#225;bio e palato s&#227;o localiza&#231;&#245;es    menos frequentes.<sup>3,5-8</sup> Al&#233;m disso, a les&#227;o deste caso apresentou    2 cm em seu maior di&#226;metro, demonstrando-se maior e mais incomum, j&#225;    que a grande maioria das les&#245;es de FCG apresentam at&#233; 1,0 cm.<sup>3,5,6,8</sup>    Diferentemente dos estudos de Barboza et al.<sup>4</sup> e de <i>Mello-Moura    et al.</i>,<sup>11</sup> que apresentavam uma les&#227;o de base pediculada,    o FGC do presente caso apresentou caracter&#237;sticas cl&#237;nicas de uma    superf&#237;cie mais regular e base s&#233;ssil, podendo descartar tamb&#233;m    o papiloma. Em contrapartida, suas demais caracter&#237;sticas, como ser les&#227;o    &#250;nica, assintom&#225;tica, de crescimento lento, consist&#234;ncia firme    e exof&#237;tica, est&#227;o de acordo com a literatura.<sup>3,5,6,8</sup> </font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> O caso relatado    ocorreu em uma paciente do sexo feminino, concordando com <i>Sonalika</i><sup>15</sup>    que descreveu que, na maioria dos estudos, ocorre uma ligeira predomin&#226;ncia    do sexo feminino (1,2: 1). A idade da paciente era de 33 anos, faixa et&#225;ria    inclusa na maior preval&#234;ncia de acometimento da les&#227;o, que &#233;    aproximadamente aos 30 anos<sup>3,5,6,8</sup>, sendo que cerca de 60 % dos casos    diagnosticados ocorrem nas 3 primeiras d&#233;cadas de vida<sup>1</sup>. Apesar    de a les&#227;o ser mais prevalente em caucasianos,<sup>5</sup> a paciente do    presente caso era parda, o que pode ser justificado, principalmente, pelo fato    de o Brasil ser um pa&#237;s com alta taxa de miscigena&#231;&#227;o.<sup>14</sup>    </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> Quanto &#224;    etiologia,<b> </b>a literatura ainda busca fatores etiol&#243;gicos mais concretos.    <i>Neville et al.</i><sup>1</sup> relataram que, ao contr&#225;rio da HFI, o    FGC parece n&#227;o estar associado &#224; irrita&#231;&#245;es cr&#244;nicas.    Tamb&#233;m j&#225; foi aventada como uma poss&#237;vel hip&#243;tese, a indu&#231;&#227;o    viral.<sup>4,7</sup> <i>G&#243;ngora-Le&#243;n et al</i>.<sup>8</sup> postularam    que, atualmente, a les&#227;o &#233; resultante de um est&#237;mulo ou um agente    etiol&#243;gico desconhecido, que altera principalmente o funcionamento das    c&#233;lulas fibrobl&#225;sticas, <sup>4</sup> tamb&#233;m sendo considerada    uma inj&#250;ria reativa focal. <i>Cury et al</i>.<sup>6</sup> consideram a    les&#227;o como um tumor benigno verdadeiro. Contudo, como o tratamento de les&#245;es    benignas e proliferativas &#233; semelhante, isso n&#227;o configura um impedimento    para realiza&#231;&#227;o da bi&#243;psia excisional. </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> Devido a aspectos    cl&#237;nicos inconclusivos, &#233; essencial a realiza&#231;&#227;o de bi&#243;psia    excisional para fechamento do diagn&#243;stico.<sup>2,4,5,7</sup> Como diagn&#243;stico    diferencial de FGC, citam-se o "fibroma" de irrita&#231;&#227;o (FI), o fibroma    verdadeiro e o papiloma; este &#250;ltimo, pelo tamanho e a poss&#237;vel superf&#237;cie    papilar, que o FGC pode comumente apresentar,<sup>1,2,15</sup> devido as caracter&#237;sticas    cl&#237;nicas destas les&#245;es.<sup>2,4,6,8</sup> </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> O que &#233; denominado    de FI trata-se, na verdade, de hiperplasia fibrosa inflamat&#243;ria (HFI) focal,    e apresenta no exame histopatol&#243;gico, a presen&#231;a de excesso de deposi&#231;&#227;o    de fibras col&#225;genas e ocasional rea&#231;&#227;o inflamat&#243;ria.<sup>6</sup>    J&#225; o fibroma verdadeiro trata-se de um tumor benigno com marcada prolifera&#231;&#227;o    de fibroblastos, sendo um raro na cavidade oral.<sup>17</sup> O FGC, al&#233;m    do fibroma verdadeiro, s&#227;o tumores benignos bem menos comuns que o FI.<sup>2,4,8</sup>    O FI normalmente acomete o indiv&#237;duo entre a 4&#170; e 6&#170; d&#233;cadas    de vida, apresentando poss&#237;veis fatores etiol&#243;gicos associados ao    trauma,<sup>1,2</sup> com uma clara rela&#231;&#227;o causa-efeito. Devido sua    localiza&#231;&#227;o, o FI foi o diagn&#243;stico cl&#237;nico do presente    caso. </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> Por ser uma les&#227;o    em que ocorre a prolifera&#231;&#227;o tecidual benigna, geralmente o tratamento    se d&#225; atrav&#233;s da excis&#227;o cir&#250;rgica completa, utilizando    um bisturi convencional ou el&#233;trico, ou ainda, por meio do uso do laser    cir&#250;rgico.<sup>3,5,8,9,16</sup> Para diagn&#243;stico definitivo da les&#227;o,    &#233; essencial a realiza&#231;&#227;o do exame histopatol&#243;gico.<sup>2,4,5,7</sup>    Em concord&#226;ncia com a literatura, o exame histopatol&#243;gico do presente    caso revelou um aumento de volume do tecido conjuntivo fibrovascular, com presen&#231;a    de fibroblastos volumosos, multinucleados, de formato estrelado e fusiforme,    que s&#227;o caracter&#237;sticas marcantes da les&#227;o. Os mesmos est&#227;o    localizados em regi&#227;o subepitelial, e tamb&#233;m h&#225; presen&#231;a    do epit&#233;lio de revestimento atr&#243;fico,<sup>1,2,6</sup> resultando,    assim, no diagn&#243;stico definitivo de FGC. </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> Desde que foi    introduzido nas condutas odontol&#243;gicas, o laser diodo vem apresentando    progresso em diversos tratamentos, devido &#224;s amplas possibilidades de aplica&#231;&#245;es    cl&#237;nicas.<sup>9,17,18</sup> A utiliza&#231;&#227;o desse aparelho em alta    pot&#234;ncia desempenha um importante papel nas cirurgias da cavidade oral,    estando bem estabelecido o seu uso para procedimentos de bi&#243;psias, abla&#231;&#227;o    de les&#245;es, redu&#231;&#227;o de tecidos moles em tuberosidades (fibromatose    anat&#244;mica) e tratamentos cir&#250;rgicos periodontais.<sup>9,17 </sup>    </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> Os diferentes    tipos de aparelhos de laser cir&#250;rgico de diodo podem apresentar varia&#231;&#245;es    no comprimento de onda entre 800 a 980 nm, no espectro de luz infravermelha    e na sua forma de aplica&#231;&#227;o, podendo ser utilizado em modo cont&#237;nuo    ou pulsado, dependendo da indica&#231;&#227;o cl&#237;nica.<sup>9,16-18</sup>    No presente caso, o comprimento de onda do aparelho foi de 808 nm, sendo utilizado    em modo cont&#237;nuo, atrav&#233;s de com fibra &#243;ptica de 0,4mm de di&#226;metro,    sendo esses par&#226;metros respons&#225;veis pela excis&#227;o cir&#250;rgica    da les&#227;o. Estas excis&#245;es funcionam baseadas no efeito fotot&#233;rmico    ou por meio de abla&#231;&#227;o.<sup>17</sup> A energia emitida &#233; absorvida    por crom&#243;foros espec&#237;ficos, na forma de calor,<sup>17</sup> com absor&#231;&#227;o    de alto n&#237;vel energ&#233;tico em tecidos pigmentados que contem hemoglobina,    melanina e col&#225;geno.<sup>9</sup> Esta produ&#231;&#227;o de calor provoca    excelente hemostasia, sendo eficaz para o tratamento de les&#245;es benignas    de tecidos moles, principalmente em regi&#245;es com rica vasculariza&#231;&#227;o    ou pass&#237;veis de traumas.<sup>18</sup> Al&#233;m de possibilitar um campo    limpo e com excelente visibilidade, reduz o tempo cir&#250;rgico, bem como a    necessidade de medica&#231;&#227;o p&#243;s-cir&#250;rgica. Al&#233;m disso,    diminui a prolifera&#231;&#227;o bacteriana local e permite forma&#231;&#227;o    de tecido de cicatriza&#231;&#227;o adequado.<sup>16,17</sup> No entanto, com    a utiliza&#231;&#227;o do laser diodo de alta pot&#234;ncia, a completa recupera&#231;&#227;o    do tecido &#233; protelada, pelo fato de que, no procedimento, ocorre a veda&#231;&#227;o    dos vasos sangu&#237;neos e linf&#225;ticos, cumprindo-se maior tempo de cicatriza&#231;&#227;o,    entre duas a tr&#234;s semanas, configurando, assim, um fator inconveniente.<sup>17</sup>    Por esse fato e com finalidades anti-inflamat&#243;rias, cicatrizantes e analg&#233;sicas,    o tratamento foi complementado utilizando-se o laser de baixa pot&#234;ncia    no espectro de luz vermelho, no p&#243;s-operat&#243;rio imediato, bem como    no mediato (sete e 14 dias). Ainda, procedimentos cir&#250;rgicos com lasers    tamb&#233;m permitem a diminui&#231;&#227;o da ansiedade e do medo do paciente,    oferecendo uma interven&#231;&#227;o mais tranquila.<sup>18</sup> No caso descrito,    foi notada uma adequada hemostasia local, excelente visibilidade e aus&#234;ncia    de intercorr&#234;ncias. A paciente relatou pouco inc&#244;modo e aus&#234;ncia    de sintomatologia dolorosa, quando questionada em todo p&#243;s-operat&#243;rio,    al&#233;m de m&#237;nimo edema local. </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> Contudo, o relativo    alto custo dos aparelhos lasers, tanto de alta (aproximadamente R$ 20 000,00),    como de baixa pot&#234;ncia (R$ 4 000), pode tornar-se um outro inconveniente    e at&#233; um impedimento para sua utiliza&#231;&#227;o rotineira, quando comparado    com a utiliza&#231;&#227;o do bisturi frio.<sup>19</sup> </font></p>     <p>&nbsp; </p>     <pre><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b><font size="3">CONSIDERA&#199;&#213;ES FINAIS</font></b></font></pre>     ]]></body>
<body><![CDATA[<p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> A utiliza&#231;&#227;o    do laser de diodo de alta pot&#234;ncia mostrou-se uma alternativa vi&#225;vel,    segura e eficaz para excis&#227;o do fibroma de c&#233;lulas gigantes, bem como    o laser de diodo de baixa pot&#234;ncia mostrou-se uma alternativa vi&#225;vel    e eficaz para a fun&#231;&#227;o biomoduladora, acelerando o processo cicatricial.    </font></p>     <p>&nbsp; </p>     <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b><font size="3">Conflicto    de intereses</font></b> </font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> N&#227;o apresentou    conflito de interesses. </font></p>     <p>&nbsp;</p>     <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b><font size="3">REFER&#202;NCIAS    BIBLIOGR&#193;FICAS</font></b> </font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 1. Amaral MBF,    &#193;vila JMS, Abreu MHG, Mesquita RA. Diode laser surgery versus scalpel surgery    in the treatment of fibrous hyperplasia: a randomized clinical trial. Int J    Oral Maxillofac Surg. 2015;44(1):1383-9.     </font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 2. Bagheri F,    Rahmani S, Azimi S, Bigom Taheri J. Giant Cell Fibroma of the Buccal Mucosa    with Laser Excision: Report of Unusual Case. Iran J Pathol. 2015;10(4):314-7.        </font></p>     ]]></body>
<body><![CDATA[<!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 3. Bakhtiari S,    Taheri JB, Sehhatpour M, Asnaashari M, Moghadam SA. Removal of an Extra-large    Irritation Fibroma With a Combination of Diode Laser and Scalpel. J Lasers Med    Sci. 2015;6(4):182-4.     </font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 4. Barboza CAG,    Alves LB, Ginani F, Figueiredo CRLV. Gingival giant cell fibroma of unusual    size. Rev Cubana Estomatol. 2016;53(2):62-6.     </font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 5. Campos V, Silva    AL, Silva DR. A forma&#231;&#227;o do povo brasileiro e o reconhecimento efetivo    da diversidade: Cultura, educa&#231;&#227;o e a&#231;&#245;es afirmativas em    prol de uma sociedade reflexiva. Revista Magistro. 2017;1(15):383-97.     </font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 6. Cury SE, Silva    B, Cury MD, Galhardo R, Ara&#250;jo J, Molina O. Giant-cell Fibroma: case report.    Webmedcentral. 2014;5(9):1-5.     </font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 7. Fontes GA,    Mello-Moura ACV, Calvo AF, Tedesco TK, Floriano I, Gimenez T,et al. Remo&#231;&#227;o    de mucocele com laser diodo: relato de caso cl&#237;nico em paciente infantil.    Rev Assoc Paul Cir Dent. 2016;70(3):330-2.     </font></p>     ]]></body>
<body><![CDATA[<!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 8. G&#243;ngora    I, Molina K, Romero M, Paredes E. Pediatric dental management fibroma giant    cell: case report. Kiru. 2016;13(2):167-70.     </font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 9. Kalburgi V,    Jain S, Raghuwanshi S. Surgical diode laser excision for cellular fibroma. Journal    of Dental Lasers. 2016;10(1):28-31.     </font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 10. Mathur E,    Sareen M, Dhaka P, Baghla P. Diode Laser Excision of Oral Benign Lesions. J    Lasers Med Sci. 2015;6(3):129-32.     </font></p>     <!-- ref --><p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2">11. Mello    -Moura AC, Santos AM, Bonini GA,Del Conte Zardetto    CG, Moura-Netto C,Wanderley MT. Giant Cell    Fibroma in a Two-Year-Old Child. Case Rep    Dent 2016; 2016;7058356.     </font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 12. Neville BW,    Damm DD, Allen CM, Bouquot JE. Patologia Oral e Maxilofacial. 3ra ed. Rio de    Janeiro: Elsevier; <a>2009.    </a> </font></p>     ]]></body>
<body><![CDATA[<!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 13. Schmidt MJ,    Tschoeke A, Noronha L, Moraes RS, Mesquita RA, Gr&#233;gio AMT, et al. Histochemical    analysis of collagen fibers in giant cell fibroma and inflammatory fibrous hyperplasia.    Acta Histochem. 2016;118(5):451-6.     </font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 14. Shah A, Anjum    A, Shah M, Doshi Y, Parkarwar PC, Bajaj M, et al. A case report on irritational    fibroma excision by laser. J Pharm Pharm Sci. 2017;6(4):2082-9.     </font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 15. Sonalika WG,    Sahu A, Deogade SC, Gupta P, Naitam D, Chansoria H, et al. Giant cell fibroma    of tongue: understanding the nature of an unusual histopathological entity.    Case Rep Dent. 2014;2014;864512.     </font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 16. Sotoode SM,    Azimi S, Taheri AS, Asnaashari M, Khalighi H, Rahmani S, et al. Diode laser    in minor oral surgery: a case series of laser removal of different benign exophytic    lesions. J Lasers Med Sci. 2015;6(3):133-8.     </font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 17. Scully C,    Dios PD, Taylor AM, Almeida OP. Oral medicine and pathology at a glance. Hoboken,    Nova Jersey: Blackwell Publishing Ltd; 2010.     </font></p>     ]]></body>
<body><![CDATA[<!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 18. Truschnegg    A, Acham S, Kqiku L, Jakse N, Beham A. Minimally Invasive Excision of Epulides    with a CO2 Laser: A Retrospective Study of 90 Patients. Photomed Laser Surg.    2017 Sep;35(9):472-8. doi: 10.1089/pho.2016.4192.     </font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"> 19. Weathers DR,    Callihan MD. Giant-cell fibroma. Oral Surg Oral Med Oral Pathol. 1974;37(3):374-84.        </font></p>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Recibido: 29/11/2017    <br>   </font><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Aceptado:    06/04/2018 </font></p>     <p>&nbsp;</p>     <p>&nbsp; </p>     ]]></body>
<body><![CDATA[<p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><i>Sandra Aparecida    Marinho</i><i>.</i> Universidade Estadual da Para&#237;ba (UEPB). Campus VIII,    Araruna-PB Brasil.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Correo electr&#243;nico:san_mar2000@yahoo.com    </font></p>     <div>     <div>         <div id="_com_1">           <p> <font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b> </b></font></p>       </div>   </div> </div>       ]]></body><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Amaral]]></surname>
<given-names><![CDATA[MBF]]></given-names>
</name>
<name>
<surname><![CDATA[Ávila]]></surname>
<given-names><![CDATA[JMS]]></given-names>
</name>
<name>
<surname><![CDATA[Abreu]]></surname>
<given-names><![CDATA[MHG]]></given-names>
</name>
<name>
<surname><![CDATA[Mesquita]]></surname>
<given-names><![CDATA[RA]]></given-names>
</name>
</person-group>
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