<?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>1677-3888</journal-id>
<journal-title><![CDATA[Odontologia Clínico-Científica (Online)]]></journal-title>
<abbrev-journal-title><![CDATA[Odontol. Clín.-Cient. (Online)]]></abbrev-journal-title>
<issn>1677-3888</issn>
<publisher>
<publisher-name><![CDATA[Conselho Regional de Odontologia de Pernambuco]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1677-38882010000400021</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[O uso da tomografia cone beam no auxílio ao diagnóstico e planejamento de cirurgia periapical: relato de caso clínico]]></article-title>
<article-title xml:lang="en"><![CDATA[The use of cone-beam volumetric tomography to help diagnose and plan a periapical surgery clinical case report]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[D'Addazio]]></surname>
<given-names><![CDATA[Paulo Sérgio dos Santos]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Assis]]></surname>
<given-names><![CDATA[Neuza Maria Souza Picorelli]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campos]]></surname>
<given-names><![CDATA[Celso Neiva]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bastos]]></surname>
<given-names><![CDATA[Tiago dos Reis]]></given-names>
</name>
<xref ref-type="aff" rid="A04"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lopes]]></surname>
<given-names><![CDATA[Raphaela de Mello]]></given-names>
</name>
<xref ref-type="aff" rid="A04"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,UFJF FO ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A02">
<institution><![CDATA[,UFJF FO ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A03">
<institution><![CDATA[,UFJF FO ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A04">
<institution><![CDATA[,UFJF FO ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</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>9</volume>
<numero>4</numero>
<fpage>377</fpage>
<lpage>380</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://revodonto.bvsalud.org/scielo.php?script=sci_arttext&amp;pid=S1677-38882010000400021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://revodonto.bvsalud.org/scielo.php?script=sci_abstract&amp;pid=S1677-38882010000400021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://revodonto.bvsalud.org/scielo.php?script=sci_pdf&amp;pid=S1677-38882010000400021&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[O diagnóstico e o planejamento das intervenções são fundamentais na execução de um tratamento cirúrgico. Um método rotineiramente usado para auxiliar no diagnóstico de lesões periapicais é a radiografia periapical, porém, com essa técnica, estruturas anatômicas tridimensionais são comprimidas em imagens bidimensionais, resultando em superposição de estruturas de interesse diagnóstico. Este artigo relata um caso clínico de um paciente que apresentava uma lesão cística, de dimensões expressivas, na região anterior da maxila cuja cirurgia foi planejada e executada após a visualização das margens da lesão por imagens de tomografia computadorizada Cone Beam (TCCB). Dessa forma, foi possível concluir que a TCCB constitui-se como um método preciso para auxiliar no diagnóstico, propiciando uma maior exatidão no planejamento, pois permite a visualização tridimensional das estruturas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[The diagnosis and planning of interventions are vital for the execution of a surgical treatment. A method used routinely to help diagnose periapical lesions is the periapical radiography. However, with this technique, three-dimensional anatomic structures are compressed into two-dimensional images resulting in the superposition of structures of diagnostic interest. This article reports the clinical case of a patient who presented a cystic lesion of expressive dimensions in the anterior region of the maxilla, and whose surgery was planned and performed after visualization of the lesions' margins by means of Cone Beam Computed Tomography (CBCT). Thus, it is possible to determine that CBCT constitutes a precise method to help diagnosis, providing better accuracy for planning as it allows the three-dimensional visualization of structures.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Tomografia Computadorizada Cone Beam]]></kwd>
<kwd lng="pt"><![CDATA[Cirurgia periapical]]></kwd>
<kwd lng="pt"><![CDATA[Diagnóstico]]></kwd>
<kwd lng="en"><![CDATA[beam Computed Tomography]]></kwd>
<kwd lng="en"><![CDATA[Periapical Surgery]]></kwd>
<kwd lng="en"><![CDATA[Diagnosis]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="right"><font size="2" face="Verdana"><b>RELATO DE CASO</b> CASE REPORT  </font></p>    <p>&nbsp;</p>    <p><font size="4" face="verdana"><a name="tx"></a><B>O uso da  tomografia cone beam no aux&iacute;lio ao diagn&oacute;stico e planejamento de  cirurgia periapical: relato de caso cl&iacute;nico</B></font></p>    <p>&nbsp;</p>    <p><font size="3" face="Verdana"><b>The  use of cone&#45;beam volumetric tomography to help diagnose and plan a periapical  surgery clinical case report</b></font></p>    <p>&nbsp;</p>    <p>&nbsp;</p>    <p><font size="2" face="Verdana"><b>Paulo  S&eacute;rgio dos Santos D'Addazio<SUP>I</SUP>; Neuza Maria Souza Picorelli Assis<SUP>II</SUP>;  Celso Neiva Campos<SUP>III</SUP>; Tiago dos Reis Bastos<SUP>IV</SUP>; Raphaela  de Mello Lopes<sup>IV</sup> </b></font></p>    <p><font size="2" face="Verdana"><SUP>I</SUP>Mestre  em Cl&iacute;nica Odontol&oacute;gica &#150; Professor Substituto de Endodontia  &#45; FO/UFJF    <br> <SUP>II</SUP>Doutora em Odontologia Restauradora &#150; Professora  Adjunta de Cirurgia &#45; FO/UFJF    ]]></body>
<body><![CDATA[<br> <SUP>III</SUP>Doutor em Cl&iacute;nica Odontol&oacute;gica  &#150; Professor Associado de Endodontia &#45; FO/UFJF    <br> <SUP>IV</SUP>Graduandos  em Odontologia &#150; FO/UFJF </font></p>    <p><font size="2" face="Verdana"><a href="#nt">Endere&ccedil;o  para correspond&ecirc;ncia</a></font></p>    <p>&nbsp;</p>    <p>&nbsp;</p><hr size="1" noshade>     <p><font size="2" face="Verdana"><B>RESUMO  </B></font></p>    <p><font size="2" face="Verdana">O diagn&oacute;stico e o planejamento  das interven&ccedil;&otilde;es s&atilde;o fundamentais na execu&ccedil;&atilde;o  de um tratamento cir&uacute;rgico. Um m&eacute;todo rotineiramente usado para  auxiliar no diagn&oacute;stico de les&otilde;es periapicais &eacute; a radiografia  periapical, por&eacute;m, com essa t&eacute;cnica, estruturas anat&ocirc;micas  tridimensionais s&atilde;o comprimidas em imagens bidimensionais, resultando em  superposi&ccedil;&atilde;o de estruturas de interesse diagn&oacute;stico. Este  artigo relata um caso cl&iacute;nico de um paciente que apresentava uma les&atilde;o  c&iacute;stica, de dimens&otilde;es expressivas, na regi&atilde;o anterior da  maxila cuja cirurgia foi planejada e executada ap&oacute;s a visualiza&ccedil;&atilde;o  das margens da les&atilde;o por imagens de tomografia computadorizada Cone Beam  (TCCB). Dessa forma, foi poss&iacute;vel concluir que a TCCB constitui&#45;se  como um m&eacute;todo preciso para auxiliar no diagn&oacute;stico, propiciando  uma maior exatid&atilde;o no planejamento, pois permite a visualiza&ccedil;&atilde;o  tridimensional das estruturas. </font></p>    <p><font size="2" face="Verdana"><B>Descritores:  </B>Tomografia Computadorizada Cone Beam; Cirurgia periapical; Diagn&oacute;stico.  </font></p><hr size="1" noshade>     <p><font size="2" face="Verdana"><b>ABSTRACT</b></font></p>    <p><font size="2" face="Verdana">The  diagnosis and planning of interventions are vital for the execution of a surgical  treatment. A method used routinely to help diagnose periapical lesions is the  periapical radiography. However, with this technique, three&#45;dimensional anatomic  structures are compressed into two&#45;dimensional images resulting in the superposition  of structures of diagnostic interest. This article reports the clinical case of  a patient who presented a cystic lesion of expressive dimensions in the anterior  region of the maxilla, and whose surgery was planned and performed after visualization  of the lesions' margins by means of Cone Beam Computed Tomography (CBCT). Thus,  it is possible to determine that CBCT constitutes a precise method to help diagnosis,  providing better accuracy for planning as it allows the three&#45;dimensional  visualization of structures. </font></p>    ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana"><B>Keywords:</B>  beam Computed Tomography, Periapical Surgery, Diagnosis. </font></p><hr size="1" noshade>      <p>&nbsp;</p>    <p>&nbsp;</p>    <p><font size="3" face="Verdana"><B>INTRODU&Ccedil;&Atilde;O</B>  </font></p>    <p><font size="2" face="Verdana">No planejamento de uma cirurgia periapical,  deve&#45;se avaliar a &aacute;rea afetada pela les&atilde;o e as estruturas anat&ocirc;micas  adjacentes. Ao se realizar o exame radiogr&aacute;fico, deve&#45;se optar por  t&eacute;cnicas de imagem que possam fornecer maiores informa&ccedil;&otilde;es  da regi&atilde;o como, por exemplo, as radiografias panor&acirc;micas<SUP>1</SUP>.  </font></p>    <p><font size="2" face="Verdana">Um m&eacute;todo rotineiramente usado  para auxiliar o diagn&oacute;stico e tratamento de les&otilde;es perapicais &eacute;  a radiografia periapical, por&eacute;m, com essa t&eacute;cnica, estruturas anat&ocirc;micas  tridimensionais s&atilde;o comprimidas em imagens bidimensionais , resultando  em superposi&ccedil;&atilde;o de estruturas de interesse diagn&oacute;stico<SUP>2</SUP>.  Embora as radiografias panor&acirc;micas e periapicais reproduzam detalhes aceit&aacute;veis  no sentido m&eacute;sio&#45;distal, a observa&ccedil;&atilde;o no sentido vest&iacute;bulo&#45;lingual  &eacute; inadequada <SUP>3</SUP>. A tomografia computadorizada, devido &agrave;s  suas caracter&iacute;sticas, proporciona a visualiza&ccedil;&atilde;o tridimensional  de les&otilde;es patol&oacute;gicas e sua rela&ccedil;&atilde;o com estruturas  anat&ocirc;micas importantes<SUP>2</SUP>. </font></p>    <p><font size="2" face="Verdana">A  tomografia computadorizada &eacute; um m&eacute;todo auxiliar no diagn&oacute;stico,  que permite a observa&ccedil;&atilde;o e a localiza&ccedil;&atilde;o tridimensional  de les&otilde;es c&iacute;sticas , dos dentes adjacentes e das estruturas anat&ocirc;micas  envolvidas e circunvizinhas, permitindo a realiza&ccedil;&atilde;o do planejamento  e do procedimento cir&uacute;rgico com maior precis&atilde;o<SUP>4</SUP>. </font></p>    <p><font size="2" face="Verdana">A  tomografia computadorizada Cone Beam ( TCCB), tamb&eacute;m denominada tomografia  volum&eacute;trica digital, apresentou&#45;se recentemente como o mais novo recurso  de imagem em Odontologia, sendo que o seu uso nas mais diversas especialidades  vem sendo descrito na literatura, como, por exemplo, no aux&iacute;lio ao diagn&oacute;stico  e ao planejamento de interven&ccedil;&otilde;es em cirurgia oral<SUP>5</SUP>.  A TCCB &eacute; uma nova tecnologia que produz imagens tridimensionais a um menor  custo, menor dose de radia&ccedil;&atilde;o , permitindo um exame de realiza&ccedil;&atilde;o  mais f&aacute;cil e com maior rapidez<SUP>6</SUP>. Sua tecnologia usa um feixe  de radia&ccedil;&atilde;o de formato c&ocirc;nico para adquirir uma imagem em  volume com uma simples rota&ccedil;&atilde;o em 360º, similar &agrave; radiografia  panor&acirc;mica. Em seguida, com a ajuda de softwares, podem ser obtidas visualiza&ccedil;&otilde;es  axiais , coronais e sagitais com cortes de 0,125 a 2 mm e reconstru&ccedil;&otilde;es  tridimensionais (3D). A capacidade de reduzir ou eliminar a superposi&ccedil;&atilde;o  de estruturas adjacentes torna a TCCB superior &agrave; radiografia periapical<SUP>7&#45;8</SUP>,  auxiliando no diagn&oacute;stico e a valia&ccedil;&atilde;o pr&eacute;&#45;cir&uacute;rgica  e apresentando benef&iacute;cios em rela&ccedil;&atilde;o &agrave; tomografia  m&eacute;dica e radiografias periapicais<SUP>7&#45;9</SUP>. As vantagens em rela&ccedil;&atilde;o  &agrave; tomografia convencional incluem: escaneamento &uacute;nico para maxila  e mand&iacute;bula, maior nitidez, permite diferenciar os tecidos dent&aacute;rios,  menor presen&ccedil;a de artefatos gerados por estruturas met&aacute;licas<SUP>5&#45;10</SUP>.  </font></p>    <p><font size="2" face="Verdana">Diante do exposto, a TCCB apresenta  grande valor no planejamento de cirurgias maxilofaciais <SUP>10&#45;11</SUP>,  como a apicectomia<SUP>12</SUP>, podendo, tamb&eacute;m, contribuir para o diagn&oacute;stico  de les&otilde;es periapicais<SUP>13&#45;14</SUP>. </font></p>    <p><font size="2" face="Verdana">Este  estudo objetivou demonstrar um caso cl&iacute;nico de cisto periapical inflamat&oacute;rio,  em que a hip&oacute;tese diagn&oacute;stica e a determina&ccedil;&atilde;o do  correto plano de tratamento foram confirmadas atrav&eacute;s de imagens em cortes  transversais obl&iacute;quos de Tomografia Computadorizada Cone Beam. </font></p>    ]]></body>
<body><![CDATA[<p>&nbsp;</p>    <p><font size="3" face="Verdana"><B>  RELATO DO CASO </B></font></p>    <p><font size="2" face="Verdana">Paciente do sexo  masculino, 35 anos, leucoderma, compareceu &agrave; Clinica do Servi&ccedil;o  Especial de Cirurgia Oral (SECO), da Faculdade de Odontologia da Universidade  Federal de Juiz de Fora, com queixa de f&iacute;stula na regi&atilde;o vestibular  do dente 22. O paciente relatou hist&oacute;rico de tratamento e retratamento  endod&ocirc;ntico dos elementos dent&aacute;rios 11, 21 e 22, sendo a &uacute;ltima  interven&ccedil;&atilde;o realizada h&aacute; cerca de seis meses . Ao exame cl&iacute;nico,  observou&#45;se apinhamento do dente 23 sobre o 22 e presen&ccedil;a de f&iacute;stula  na regi&atilde;o vestibular, mobilidade grau I dos dentes 21 e 22, aus&ecirc;ncia  de bolsas periodontais &agrave; sondagem e resposta positiva aos testes de vitalidade  pulpar do dente 23. N&atilde;o havia queixa de sintomatologia dolorosa na regi&atilde;o.  </font></p>    <p><font size="2" face="Verdana">O paciente apresentou radiografia  periapical realizada h&aacute; cerca de dois meses , mostrando uma les&atilde;o  radiol&uacute;cida, estendendo&#45;se da mesial do dente 21 at&eacute; a mesial  do 23, intimamente relacionada com o assoalho da cavidade nasal e parede anterior  do seio maxilar . Foi solicitada uma radiografia panor&acirc;mica para avalia&ccedil;&atilde;o  do caso (<a href="#fig01">Figura 1</a>), na qual a les&atilde;o apresentava&#45;se  com limites pouco n&iacute;tidos, n&atilde;o permitindo a identifica&ccedil;&atilde;o  precisa de suas margens e sua rela&ccedil;&atilde;o com as estruturas anat&ocirc;micas  adjacentes. A primeira hip&oacute;tese diagn&oacute;stica foi de cisto periapical  inflamat&oacute;rio, de acordo com o hist&oacute;rico do caso e com o aspecto  radiogr&aacute;fico. Foi ent&atilde;o, indicada a enuclea&ccedil;&atilde;o da  les&atilde;o e exame an&aacute;tomo&#45;patol&oacute;gico da pe&ccedil;a. No planejamento  cir&uacute;rgico, houve a d&uacute;vida se a les&atilde;o j&aacute; havia invadido  ou n&atilde;o as cavidades naturais adjacentes (seio maxilar e cavidade nasal)  e da necessidade ou n&atilde;o de exodontia dos dentes adjacentes &agrave; les&atilde;o,  com confec&ccedil;&atilde;o de pr&oacute;tese parcial remov&iacute;vel provis&oacute;ria.  Com o objetivo de se obter melhor visualiza&ccedil;&atilde;o, determina&ccedil;&atilde;o  dos limites da les&atilde;o, bem como a sua rela&ccedil;&atilde;o com dentes e  cavidades vizinhas, e o estabelecimento de um correto plano de tratamento, foi  solicitada uma Tomografia Computadorizada Cone Beam (<a href="#fig02">Figura 2</a>).  Ap&oacute;s a an&aacute;lise das imagens em cortes transversais obl&iacute;quos  e a observa&ccedil;&atilde;o n&iacute;tida de seus limites, optou&#45;se pela  cirurgia periapical com remo&ccedil;&atilde;o da les&atilde;o e apicectomia dos  dentes 21 e 22 (<a href="#fig03">Figura 3</a>). O exame histopatol&oacute;gico  confirmou a hip&oacute;tese diagn&oacute;stica de cisto periapical inflamat&oacute;rio.  O paciente foi orientado quanto &agrave; higiene oral e a necessidade de retornos  peri&oacute;dicos para proserva&ccedil;&atilde;o. A radiografia periapical, realizada  ap&oacute;s 6 meses, mostrou significativa regress&atilde;o da les&atilde;o(<a href="#fig04">figura  4</a>). </font></p>    <p><a name="fig01"></a></p>    <p>&nbsp;</p>    <p align="center"><img src="/img/revistas/occ/v9n4/a21fig01.jpg"></p>    <p>&nbsp;</p>    <p><a name="fig02"></a></p>    <p>&nbsp;</p>    ]]></body>
<body><![CDATA[<p align="center"><img src="/img/revistas/occ/v9n4/a21fig02.jpg"></p>    <p>&nbsp;</p>    <p><a name="fig03"></a></p>    <p>&nbsp;</p>    <p align="center"><img src="/img/revistas/occ/v9n4/a21fig03.jpg"></p>    <p>&nbsp;</p>    <p><a name="fig04"></a></p>    <p>&nbsp;</p>    <p align="center"><img src="/img/revistas/occ/v9n4/a21fig04.jpg"></p>    <p>&nbsp;</p>    ]]></body>
<body><![CDATA[<p><font size="3" face="Verdana"><B>  DISCUSS&Atilde;O </B></font></p>    <p><font size="2" face="Verdana">Os cistos periapicais  s&atilde;o les&otilde;es revestidas por epit&eacute;lio, com grande altera&ccedil;&atilde;o  quanto &agrave; preval&ecirc;ncia, podendo variar entre 7 a 54% das radiotranspar&ecirc;ncias  periapicais <SUP>15&#45;16</SUP>. Caracteristicamente os pacientes n&atilde;o  apresentam sintomatologia, como o caso cl&iacute;nico deste artigo. Por&eacute;m,  se a les&atilde;o atingir um maior tamanho, pode ser observada tumefa&ccedil;&atilde;o  e sensibilidade<SUP>16</SUP>, aspectos n&atilde;o identificados na anamnese e  exame cl&iacute;nico deste relato.</font></p>    <p> <font size="2" face="Verdana">&Eacute;  importante que todo tecido alterado removido durante uma cirurgia deva ser submetido  a um exame histol&oacute;gico para seu correto diagn&oacute;stico. A forma&ccedil;&atilde;o  dos cistos periapicais est&aacute; associada &agrave; prolifera&ccedil;&atilde;o  dos restos epiteliais de Malassez , associados a um elemento dent&aacute;rio com  necrose ou presen&ccedil;a de bact&eacute;rias nos condutos<SUP>15&#45;16</SUP>.  O caso cl&iacute;nico relatado apresentava tr&ecirc;s dentes anatomicamente relacionados  com a les&atilde;o , submetidos anteriormente a dois tratamentos endod&ocirc;nticos  sem sucesso e com coroas cl&iacute;nicas escurecidas. </font></p>    <p><font size="2" face="Verdana">&Eacute;  fato que as les&otilde;es podem variar de tamanho, apresentando a perda da continuidade  do ligamento periodontal na visualiza&ccedil;&atilde;o radiogr&aacute;fica. A  cirurgia periapical est&aacute; indicada para les&otilde;es acima de 2 cm e em  dentes em que est&aacute; descartada a hip&oacute;tese de sucesso pelo tratamento  endod&ocirc;ntico convencional<SUP>16&#45;17</SUP>. Destaca&#45;se tamb&eacute;m  que se o tratamento e/ ou retratamento endod&ocirc;ntico por meio convencional  n&atilde;o tiveram resultados positivos, a cirurgia periapical parece ser o procedimento  mais indicado, incluindo a curetagem da les&atilde;o e a amputa&ccedil;&atilde;o  radicular<SUP>16&#45;17</SUP>. </font></p>    <p><font size="2" face="Verdana">Com  rela&ccedil;&atilde;o &agrave;s imagens obtidas , as radiografias periapicais  e panor&acirc;micas permitiam a visualiza&ccedil;&atilde;o global das margens  e limites da les&atilde;o e das estruturas adjacentes<SUP>1</SUP>, n&atilde;o  evidenciando, contudo, detalhes da rela&ccedil;&atilde;o da les&atilde;o com cavidades  naturais, ra&iacute;zes dos dentes afetados e estruturas anat&ocirc;micas<SUP>2&#45;3</SUP>.  O planejamento cir&uacute;rgico inicial , baseado nas radiografias, previa a remo&ccedil;&atilde;o  cir&uacute;rgica da les&atilde;o, juntamente com a exodontia dos dentes afetados<SUP>15&#45;16</SUP>  e a coloca&ccedil;&atilde;o de uma pr&oacute;tese provis&oacute;ria imediata.  </font></p>    <p><font size="2" face="Verdana">A observa&ccedil;&atilde;o de imagens  por Tomografia Computadorizada Cone Beam em planos de sec&ccedil;&atilde;o transversal  permitiu a observa&ccedil;&atilde;o da regi&atilde;o em profundidade, eliminando  sobreposi&ccedil;&otilde;es<SUP>2&#45;6</SUP>, contornando, assim, uma grande  limita&ccedil;&atilde;o das radiografias periapicais, que &eacute; a aus&ecirc;ncia  de profundidade. Desse modo, foi poss&iacute;vel a observa&ccedil;&atilde;o mais  apurada dos dentes e das estruturas relacionadas, propiciando a verifica&ccedil;&atilde;o  exata das margens da les&atilde;o e sua &iacute;ntima rela&ccedil;&atilde;o com  estruturas adjacentes<SUP>7&#45;9&#45;18</SUP>, conduzindo a uma abordagem mais  conservadora na terapia cir&uacute;rgica<SUP>10&#45;11</SUP>. Foi indicada, ent&atilde;o,  a enuclea&ccedil;&atilde;o do cisto, seguida de apicectomia<SUP>2&#45;16&#45;17</SUP>,  com envio do material para exame patol&oacute;gico<SUP>15&#45;16</SUP>. </font></p>    <p><font size="2" face="Verdana">&Eacute;  importante o exame cuidadoso das les&otilde;es e sua rela&ccedil;&atilde;o anat&ocirc;mica  com estruturas adjacentes antes do planejamento de uma cirurgia oral menor , para  evitar complica&ccedil;&otilde;es cir&uacute;rgicas<SUP>19</SUP>. As informa&ccedil;&otilde;es  obtidas nos exames cl&iacute;nicos ou por imagens influenciam diretamente nas  decis&otilde;es cl&iacute;nicas , sendo que dados precisos permitem decis&otilde;es  mais adequadas e um progn&oacute;stico mais favor&aacute;vel. Dentro deste contexto,  a TCCB possibilita aos cirurgi&otilde;es informa&ccedil;&otilde;es mais relevantes  que n&atilde;o poderiam ser obtidas por radiografias convencionais<SUP>7</SUP>.  </font></p>    <p><font size="2" face="Verdana">Deve&#45;se salientar, contudo, que  os exames radiogr&aacute;ficos odontol&oacute;gicos convencionais devido &agrave;s  suas caracter&iacute;sticas, como facilidade de aquisi&ccedil;&atilde;o, interpreta&ccedil;&atilde;o  e baixo custo, ainda constituem&#45;se em um importante recurso auxiliar ao diagn&oacute;stico  e planejamento de um procedimento cir&uacute;rgico, devendo ser a primeira op&ccedil;&atilde;o  do profissional. Outro ponto importante a ser considerado &eacute; que os exames  tomogr&aacute;ficos Cone Beam apresentam uma maior quantidade de radia&ccedil;&atilde;o  em compara&ccedil;&atilde;o &agrave;s radiografias convencionais, bem como um  maior custo, sendo necess&aacute;ria uma an&aacute;lise criteriosa do caso para  verificar a real necessidade de sua utiliza&ccedil;&atilde;o e o custo&#45;benef&iacute;cio  do exame. A expectativa &eacute; a de que , com o desenvolvimento da tecnologia  da TCCB, e a redu&ccedil;&atilde;o dos custos do exame, esta venha a ser utilizada  de maneira mais rotineira em procedimentos de cirurgia oral menor. </font></p>    <p>&nbsp;</p>    <p><font size="3" face="Verdana"><B>  CONCLUS&Atilde;O </B></font></p>    ]]></body>
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<body><![CDATA[<p>&nbsp;</p>    <p>&nbsp;</p>    <p><font size="2" face="Verdana"><b><a name="nt"></a><a href="#tx"><img src="/img/revistas/occ/v9n4/seta.jpg" border="0"></a>  Endere&ccedil;o para correspond&ecirc;ncia    <br> </b>Paulo S&eacute;rgio dos Santos  D'Addazio    <br> Rua Esp&iacute;rito Santo, 1.115 sala 1.205    <br> Centro &#150; Juiz  de Fora/MG &#150; 36.016&#45;200    <br> Telefone: 32&#45; 3233&#45;2624 / 32 &#45;  9988&#45;3803    <br> <a href="mailto:pdaddazio@gmail.com">pdaddazio@gmail.com</a></font></p>    <p><font size="2" face="Verdana">Recebido  para publica&ccedil;&atilde;o: 08/03/10     <br> Aceito para publica&ccedil;&atilde;o:  10/06/10 </font></p>     ]]></body>
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