<?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>1981-8637</journal-id>
<journal-title><![CDATA[RGO.Revista Gaúcha de Odontologia (Online)]]></journal-title>
<abbrev-journal-title><![CDATA[RGO, Rev. gaúch. odontol. (Online)]]></abbrev-journal-title>
<issn>1981-8637</issn>
<publisher>
<publisher-name><![CDATA[Mundi Brasil Gráfica e Editora Ltda.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1981-86372010000400017</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Amelogênese imperfeita em paciente nefropata: relato de uma reabilitação oral conservadora]]></article-title>
<article-title xml:lang="en"><![CDATA[Amelogenesis imperfecta in a patient with kidney disease: a report of a conservative oral rehabilitation]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pinheiro]]></surname>
<given-names><![CDATA[Sally de França Lacerda]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cunha]]></surname>
<given-names><![CDATA[Mércia Jussara da Silva]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Amorim]]></surname>
<given-names><![CDATA[Fernanda de Castro Alencar]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lopes]]></surname>
<given-names><![CDATA[Maria Fernanda]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pinheiro]]></surname>
<given-names><![CDATA[Isauremi Vieira de Assunção]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidade Federal do Rio Grande do Norte Departamento de Odontologia ]]></institution>
<addr-line><![CDATA[Natal RN]]></addr-line>
<country>Brasil</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidade de São Paulo Hospital de Reabilitação de Anomalias Craniofaciais ]]></institution>
<addr-line><![CDATA[Bauru SP]]></addr-line>
<country>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>58</volume>
<numero>4</numero>
<fpage>527</fpage>
<lpage>531</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://revodonto.bvsalud.org/scielo.php?script=sci_arttext&amp;pid=S1981-86372010000400017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://revodonto.bvsalud.org/scielo.php?script=sci_abstract&amp;pid=S1981-86372010000400017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://revodonto.bvsalud.org/scielo.php?script=sci_pdf&amp;pid=S1981-86372010000400017&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Amelogênese imperfeita é uma doença hereditária que afeta a formação do esmalte, tanto na dentição decídua como na permanente. Ela também pode ser associada com alterações morfológicas e bioquímicas em outra parte do corpo. O diagnóstico da amelogênese imperfeita envolve a exclusão de fatores ambientais e o estabelecimento de um provável padrão de herança genética, reconhecimento do fenótipo e correlação com a formação do esmalte. Numerosas modalidades de tratamento têm sido descritas para a reabilitação de pacientes com amelogênese imperfeita. No entanto, tem-se buscado reabilitar de maneira conservadora e com um enfoque na prevenção dos efeitos dessa patologia. Este trabalho tem por objetivo relatar um caso clínico de reabilitação estética e funcional por meio do uso de resinas compostas, em um paciente com amelogênese imperfeita e que apresentava hiperplasia gengival devido ao uso de imunossupressores. Pôde-se concluir que é possível melhorar a estética e restabelecer a função destes pacientes através de procedimentos e técnicas simples e de baixo custo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Amelogenesis imperfecta is a hereditary disease that disrupts enamel formation, affecting both the deciduous and permanent teeth. It can also be associated with morphological and biochemical changes elsewhere in the body. The diagnosis of amelogenesis imperfecta involves the exclusion of environmental factors and the establishment of a likely pattern of inheritance, recognition of the phenotype and correlation with enamel formation. Numerous treatment modalities have been described for the rehabilitation of patients with amelogenesis imperfecta. However, rehabilitation is preferably conservative, focusing on preventing the effects of this pathology. The aim of this paper is to report a case of aesthetic and functional rehabilitation of a patient with amelogenesis imperfecta and immunosuppressant-induced gingival hyperplasia using composite resins. In conclusion, it is possible to improve the aesthetics and restore the function of these patients with simple and inexpensive procedures and techniques.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Amelogênese imperfeita]]></kwd>
<kwd lng="pt"><![CDATA[Nefropatia]]></kwd>
<kwd lng="pt"><![CDATA[Reabilitação bucal]]></kwd>
<kwd lng="pt"><![CDATA[Resinas compostas]]></kwd>
<kwd lng="en"><![CDATA[Amelogenesis imperfecta]]></kwd>
<kwd lng="en"><![CDATA[Kidney disease]]></kwd>
<kwd lng="en"><![CDATA[Mouth rehabilitation]]></kwd>
<kwd lng="en"><![CDATA[Composite resins]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="right"><font size="2" face="Verdana"><b>CL&Iacute;NICO</b> CLINICAL</font></p>     <p>&nbsp;</p>     <p><font size="4" face="verdana"><a name="tx"></a><b>Amelog&ecirc;nese imperfeita em paciente nefropata: relato de uma reabilita&ccedil;&atilde;o oral conservadora</b></font></p>     <p>&nbsp;</p>     <p><font size="3" face="verdana"><b>Amelogenesis imperfecta in a patient with kidney disease: a report of a conservative oral rehabilitation</b></font></p>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font size="2" face="verdana"><b>Sally de Fran&ccedil;a Lacerda Pinheiro<sup>I</sup>; M&eacute;rcia Jussara da Silva Cunha<sup>II,</sup><a href="#nt"><sup>*</sup></a>; Fernanda de Castro Alencar Amorim<sup>I</sup>; Maria Fernanda Lopes<sup>I</sup>; Isauremi Vieira de Assun&ccedil;&atilde;o Pinheiro<sup>I</sup></b></font></p>     <p><font size="2" face="Verdana"><sup>I</sup>Universidade Federal do Rio Grande do Norte, Departamento de Odontologia. Natal, RN, Brasil    <br>   <sup>II</sup>Universidade de S&atilde;o Paulo, Hospital de Reabilita&ccedil;&atilde;o de Anomalias Craniofaciais, Setor de Periodontia. Rua Silvio Marchione, 3&#45;20, Vila Universit&aacute;ria,   17012&#45;900, Bauru, SP, Brasil</font></p>     ]]></body>
<body><![CDATA[<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">Amelog&ecirc;nese imperfeita &eacute; uma doen&ccedil;a heredit&aacute;ria que afeta a forma&ccedil;&atilde;o do esmalte, tanto na denti&ccedil;&atilde;o dec&iacute;dua como na permanente. Ela tamb&eacute;m pode ser associada com altera&ccedil;&otilde;es morfol&oacute;gicas e bioqu&iacute;micas em outra parte do corpo. O diagn&oacute;stico da amelog&ecirc;nese imperfeita envolve a exclus&atilde;o de fatores ambientais e o estabelecimento de um prov&aacute;vel padr&atilde;o de heran&ccedil;a gen&eacute;tica, reconhecimento do fen&oacute;tipo e correla&ccedil;&atilde;o com a forma&ccedil;&atilde;o do esmalte. Numerosas modalidades de tratamento t&ecirc;m sido descritas para a reabilita&ccedil;&atilde;o de pacientes com amelog&ecirc;nese imperfeita. No entanto, tem&#45;se buscado reabilitar de maneira conservadora e com um enfoque na preven&ccedil;&atilde;o dos efeitos dessa patologia. Este trabalho tem por objetivo relatar um caso cl&iacute;nico de reabilita&ccedil;&atilde;o est&eacute;tica e funcional por meio do uso de resinas compostas, em um paciente com amelog&ecirc;nese imperfeita e que apresentava hiperplasia gengival devido ao uso de imunossupressores. P&ocirc;de&#45;se concluir que &eacute; poss&iacute;vel melhorar a est&eacute;tica e restabelecer a fun&ccedil;&atilde;o destes pacientes atrav&eacute;s de procedimentos e t&eacute;cnicas simples e de baixo custo. </font></p>     <p><font size="2" face="Verdana"><b>Termos de indexa&ccedil;&atilde;o:</b> Amelog&ecirc;nese imperfeita. Nefropatia. Reabilita&ccedil;&atilde;o bucal. Resinas compostas.</font></p> <hr size="1" noshade>     <p><font size="2" face="Verdana"><b>ABSTRACT</b></font></p>     <p><font size="2" face="Verdana">Amelogenesis imperfecta is a hereditary disease that disrupts enamel formation, affecting both the deciduous and permanent teeth. It can also be associated with morphological and biochemical changes elsewhere in the body. The diagnosis of amelogenesis imperfecta involves the exclusion of environmental factors and the establishment of a likely pattern of inheritance, recognition of the phenotype and correlation with enamel formation. Numerous treatment modalities have been described for the rehabilitation of patients with amelogenesis imperfecta. However, rehabilitation is preferably conservative, focusing on preventing the effects of this pathology. The aim of this paper is to report a case of aesthetic and functional rehabilitation of a patient with amelogenesis imperfecta and immunosuppressant&#45;induced gingival hyperplasia using composite resins. In conclusion, it is possible to improve the aesthetics and restore the function of these patients with simple and inexpensive procedures and techniques.</font></p>     <p><font size="2" face="Verdana"><b>Indexing terms:</b> Amelogenesis imperfecta. Kidney disease. Mouth rehabilitation. Composite resins.</font></p> <hr size="1" noshade>     <p>&nbsp;</p>     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p><font size="3" face="Verdana"><b>INTRODU&Ccedil;&Atilde;O</b></font></p>     <p><font size="2" face="Verdana">Amelog&ecirc;nese imperfeita define&#45;se como um grupo complexo de altera&ccedil;&atilde;o heredit&aacute;ria na forma&ccedil;&atilde;o do esmalte, afetando tanto a denti&ccedil;&atilde;o dec&iacute;dua como a permanente<sup>1</sup>. Esse defeito na mineraliza&ccedil;&atilde;o do esmalte, descrito como "dente marrom heredit&aacute;rio" tem apresentado uma incid&ecirc;ncia de 1:14.000 nos EUA<sup>2</sup>. </font></p>     <p><font size="2" face="Verdana">A amelog&ecirc;nese imperfeita &eacute; causada por muta&ccedil;&otilde;es numa variedade de genes que s&atilde;o cr&iacute;ticos na forma&ccedil;&atilde;o do esmalte. Ela pode mostrar padr&atilde;o de transmiss&atilde;o autoss&ocirc;mico ou ligado ao sexo (cromossomo X), de forma dominante ou recessiva<sup>3</sup>. O tipo mais comum &eacute; a forma autoss&ocirc;mica dominante<sup>4</sup>. A amelog&ecirc;nese imperfeita tamb&eacute;m tem sido vista como parte de anomalias multi&#45;&oacute;rg&atilde;os como distrofia cone&#45;bastonetes, insufici&ecirc;ncia hipotal&acirc;mo&#45;hipofis&aacute;ria e insufici&ecirc;ncia renal. </font></p>     <p><font size="2" face="Verdana">V&aacute;rios subtipos de amelog&ecirc;nese imperfeita t&ecirc;m sido observados e classificados. Fenotipicamente, a amelog&ecirc;nese imperfeita se distingue em: hipopl&aacute;sica, hipomaturada ou hipocalcificada<sup>5&#45;6</sup>. Essas formas da amelog&ecirc;nese imperfeita variam desde a presen&ccedil;a de um esmalte deficiente, at&eacute; a ocorr&ecirc;ncia de defeitos no conte&uacute;do mineral e proteico<sup>7</sup> e podem ser identificadas com base nas caracter&iacute;sticas cl&iacute;nicas, radiogr&aacute;ficas, histol&oacute;gicas e composi&ccedil;&atilde;o do esmalte dos dentes<sup>8&#45;9</sup>. Na hipopl&aacute;sica h&aacute; uma defici&ecirc;ncia na quantidade de esmalte que &eacute; mineralizado adequadamente. As les&otilde;es podem aparecer puntiformes ou dispersas atrav&eacute;s da superf&iacute;cie do esmalte e resulta de uma deposi&ccedil;&atilde;o inadequada de matriz do esmalte. A hipomaturada &eacute; associada a defeitos na deposi&ccedil;&atilde;o final dos cristais e na matura&ccedil;&atilde;o do esmalte<sup>10</sup>, resultando em um esmalte com colora&ccedil;&atilde;o variando de branco&#45;opaca a amarelo&#45;marrom ou vermelho&#45;marrom. A camada de esmalte &eacute; normal na espessura, mas ela pode ser facilmente destacada da dentina subjacente. Na hipocalcificada, o esmalte &eacute; formado por uma matriz normal, mas insuficientemente mineralizada. Clinicamente caracteriza&#45;se como dentes severamente desgastados, muito sens&iacute;veis &agrave;s altera&ccedil;&otilde;es t&eacute;rmicas e possuem uma colora&ccedil;&atilde;o marrom escuro. </font></p>     <p><font size="2" face="Verdana">Outros achados associados em pacientes com amelog&ecirc;nese imperfeita incluem: atraso na erup&ccedil;&atilde;o dos dentes, perda cong&ecirc;nita dos dentes, reabsor&ccedil;&atilde;o coron&aacute;ria e radicular e calcifica&ccedil;&atilde;o pulpar<sup>11</sup>, diminui&ccedil;&atilde;o da dimens&atilde;o vertical, mordida aberta anterior, displasias dentin&aacute;rias, hipercementose, malforma&ccedil;&otilde;es radiculares e taurodontismo. Radiograficamente a densidade da camada de esmalte &eacute; menor do que o normal. O esmalte hipopl&aacute;sico apresenta grande varia&ccedil;&atilde;o na densidade e pode ser dif&iacute;cil distinguir radiograficamente da dentina subjacente<sup>5</sup>. </font></p>     <p><font size="2" face="Verdana">O diagn&oacute;stico envolve a exclus&atilde;o de fatores ambientais e dist&uacute;rbios de desenvolvimento, estabelecimento de um prov&aacute;vel padr&atilde;o de heran&ccedil;a gen&eacute;tica e reconhecimento do fen&oacute;tipo<sup>3</sup>.</font></p>     <p><font size="2" face="Verdana">Numerosas modalidades de tratamento t&ecirc;m sido descritas para a reabilita&ccedil;&atilde;o de pacientes com amelog&ecirc;nese imperfeita, como extra&ccedil;&atilde;o, implantes dentais, pr&oacute;teses remov&iacute;veis ou fixas<sup>12&#45;14</sup>. No entanto, esses procedimentos s&atilde;o muito invasivos, complexos e de custo elevado, o que impossibilita a reabilita&ccedil;&atilde;o de muito destes pacientes. Este relato cl&iacute;nico descreve a sequ&ecirc;ncia de um tratamento simples e eficaz de um paciente que apresentou insufici&ecirc;ncia renal na inf&acirc;ncia, sofreu transplante renal e apresenta um quadro de amelog&ecirc;nese imperfeita tipo hipocalcificada associada com uma hiperplasia gengival e mordida aberta anterior, decorrente provavelmente da nefropatia.</font></p>     <p>&nbsp;</p>     <p><font size="3" face="verdana"><b>CASO CL&Iacute;NICO</b></font></p>     <p><font size="2" face="Verdana">Paciente do g&ecirc;nero masculino, 16 anos de idade apresentou&#45;se &agrave; Cl&iacute;nica Integrada do Departamento de Odontologia da Universidade Federal do Rio Grande do Norte queixando&#45;se de sensibilidade dental e est&eacute;tica insatisfat&oacute;ria. Na hist&oacute;ria m&eacute;dica, foi relatado que o paciente sofreu na inf&acirc;ncia de uma insufici&ecirc;ncia renal, sem identifica&ccedil;&atilde;o etiol&oacute;gica. Para o tratamento foi necess&aacute;rio &agrave; realiza&ccedil;&atilde;o de um transplante renal, realizado na idade de 14 anos. Fizera uso de ciclosporina durante o per&iacute;odo de 2 anos antes da primeira consulta. No exame cl&iacute;nico intraoral, observaram&#45;se manchas amareladas na superf&iacute;cie de esmalte de todos os dentes, e intensa perda de subst&acirc;ncia mineral no esmalte, sendo mais evidentes nos caninos superiores (<a href="#fig01">Figuras 1A</a>, <a href="#fig01">B</a>, <a href="#fig01">C</a>). Al&eacute;m das altera&ccedil;&otilde;es de cor, os dentes apresentavam desgaste incisal/oclusal exacerbado (<a href="#fig01">Figuras 1D</a>, <a href="#fig01">1E</a>), grandes diastemas, mordida aberta anterior, c&aacute;rie no elemento 26, boa higiene oral, aus&ecirc;ncia de inflama&ccedil;&atilde;o gengival e zonas de hiperplasia gengival, provavelmente devido ao uso de drogas imunossupressoras. A queixa principal do paciente era o desconforto est&eacute;tico. </font></p>     ]]></body>
<body><![CDATA[<p><a name="fig01"></a></p>     <p>&nbsp;</p>     <p align="center"><img src="/img/revistas/rgo/v58n4/a17fig01.jpg"></p>     <p>&nbsp;</p>     <p><font size="2" face="Verdana">Quando questionado sobre a presen&ccedil;a dessa anomalia na fam&iacute;lia, o paciente relatou que seu irm&atilde;o apresentava algumas altera&ccedil;&otilde;es dent&aacute;rias semelhantes, mas em menor intensidade. N&atilde;o foi poss&iacute;vel avaliar a condi&ccedil;&atilde;o bucal desse outro indiv&iacute;duo. No seu hist&oacute;rico dental, tamb&eacute;m relatou haver o mesmo tipo de m&aacute;&#45;forma&ccedil;&atilde;o na denti&ccedil;&atilde;o dec&iacute;dua. Diante disso p&ocirc;de&#45;se diagnosticar o caso como amelog&ecirc;nese imperfeita hipocalcificada, exacerbada provavelmente pela insufici&ecirc;ncia renal na inf&acirc;ncia.</font></p>     <p><font size="2" face="Verdana">O tratamento foi iniciado pela terapia periodontal. Atrav&eacute;s de raspagem e alisamento corono&#45;radicular e instru&ccedil;&atilde;o de higiene oral, seguida por uma gengivoplastia na regi&atilde;o anterior, maxilar e mandibular, para remo&ccedil;&atilde;o do excesso de tecido gengival, a fim de facilitar a correta manuten&ccedil;&atilde;o da sa&uacute;de periodontal. O paciente manteve o uso de imunossupressores durante todo o tratamento.</font></p>     <p><font size="2" face="Verdana">Ap&oacute;s cicatriza&ccedil;&atilde;o dos tecidos periodontais foram realizadas moldagens (Jeltrate &#45; Denstply, Milford, EUA) de ambas as arcadas para obten&ccedil;&atilde;o de modelos de estudo. Os modelos obtidos foram montados em articulador semi&#45;ajust&aacute;vel para an&aacute;lise da oclus&atilde;o e enceramento de diagn&oacute;stico. O paciente n&atilde;o apresentava perda de dimens&atilde;o vertical. Entretanto, foi necess&aacute;rio realizar um aumento da dimens&atilde;o vertical para obter espa&ccedil;o interoclusal anterior suficiente &agrave; reconstru&ccedil;&atilde;o dos dentes anteriores. Assim, todos os molares receberam uma camada de resina composta (Charisma<sup>&reg;</sup>, Heraeus&#45;kulzer, S&atilde;o Paulo, Brasil), na superf&iacute;cie oclusal previamente limpa (profilaxia com pedra pomes), condicionada (&aacute;cido fosforico 37% &#45; Condac 37, FGM) e tratada pelo sistema adesivo (Prime &amp; Bond 2.1, Dentsply, Milford, EUA), inclusive o elemento 26 onde foi removida a c&aacute;rie e restaurado. Ao final do primeiro m&ecirc;s de tratamento o paciente foi reavaliado. N&atilde;o houve relato de qualquer desconforto articular ou muscular ap&oacute;s o tratamento e a gengiva n&atilde;o apresentou aumento de volume ou altera&ccedil;&atilde;o de cor. </font></p>     <p><font size="2" face="Verdana">Seguindo o planejamento, a etapa seguinte foi reabilita&ccedil;&atilde;o est&eacute;tica anterior. Sobre o modelo encerado (<a href="#fig02">Figura 2</a>), respeitando as guias de desoclus&atilde;o, foi confeccionada uma matriz de silicona de condensa&ccedil;&atilde;o densa (Zhermack, Zetaplus, Badia Polesine, It&aacute;lia) para servir de orienta&ccedil;&atilde;o durante o trabalho restaurador. Ap&oacute;s tratamento &aacute;cido e adesivo da superf&iacute;cie dental (idem aos molares) (<a href="#fig03">Figura 3A</a>, <a href="#fig03">B</a>), foi aplicada uma camada de resina composta (Charisma<sup>&reg;</sup>, Heraeus&#45;kulzer, S&atilde;o Paulo, Brasil), de cor opaca A3 para mascarar a colora&ccedil;&atilde;o acastanhada da dentina (<a href="#fig03">Figura 3C</a>). Em seguida demais incrementos de resina foram colocados sobre a matriz de silicona, adaptada na superf&iacute;cie palatina dos dentes anteriores e polimerizada (<a href="#fig04">Figura 4A</a>). Foram utilizadas as resinas compostas micro&#45;h&iacute;bridas (TPH, Dentsply, Milford, EUA) na cor A3 para os incisivos e caninos reproduzindo a dentina, e resinas compostas microparticuladas (Durafill, Heraeus Kulzer, S&atilde;o Paulo, Brasil) na cor A3 como cobertura superficial de toda a restaura&ccedil;&atilde;o para melhor brilho e polimento final reproduzindo o esmalte dental. Cada incremento foi fotopolimerizado por 40 segundos, e a &uacute;ltima polimeriza&ccedil;&atilde;o foi de 60 segundos com a superf&iacute;cie da restaura&ccedil;&atilde;o recoberta por gel lubrificante hidrossol&uacute;vel (KY, Johnson &amp; Johnson, S&atilde;o Jos&eacute; dos Campos, Brasil). Os mesmos procedimentos foram realizados para os elementos anteriores inferiores (<a href="#fig04">Figura 4B</a>).</font></p>     <p><a name="fig02"></a></p>     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p align="center"><img src="/img/revistas/rgo/v58n4/a17fig02.jpg"></p>     <p>&nbsp;</p>     <p><a name="fig03"></a></p>     <p>&nbsp;</p>     <p align="center"><img src="/img/revistas/rgo/v58n4/a17fig03.jpg"></p>     <p>&nbsp;</p>     <p><a name="fig04"></a></p>     <p>&nbsp;</p>     <p align="center"><img src="/img/revistas/rgo/v58n4/a17fig04.jpg"></p>     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana">O acabamento imediato foi realizado com discos de lixa abrasivos utilizados da granula&ccedil;&atilde;o grossa para a ultra&#45;fina (Sof&#45;Lex, 3M, St. Paul, EUA)  e tiras de lixas (TDV, PoliGloss, Pomerade, Brasil) (<a href="#fig05">Figura 5A</a>). Ap&oacute;s uma semana foi realizada a sess&atilde;o de acabamento e polimento final, onde se utilizou pontas diamantadas douradas para dar uma texturiza&ccedil;&atilde;o (F e FF, SS White, Rio de Janeiro, Brasil), a sequ&ecirc;ncia de discos Sof&#45;lex (3M ESPE, St. Paul, EUA) de granula&ccedil;&atilde;o decrescente, borrachas abrasivas (Enhance, Dentsply, Milford, EUA) e polimento final com disco de feltro e pasta de polimento (TDV, PoliGloss, Pomerade, Brasil) (<a href="#fig05">Figura 5B</a>, <a href="#fig05">C</a>).</font></p>     <p><a name="fig05"></a></p>     <p>&nbsp;</p>     <p align="center"><img src="/img/revistas/rgo/v58n4/a17fig05.jpg"></p>     <p>&nbsp;</p>     <p><font size="2" face="Verdana">Ao final, foram feitas recomenda&ccedil;&otilde;es quanto &agrave; higieniza&ccedil;&atilde;o e dieta para preserva&ccedil;&atilde;o da cor das resinas. Orientou&#45;se quanto &agrave; import&acirc;ncia da preserva&ccedil;&atilde;o dos remanescentes restaurados com visitas regulares ao dentista.</font></p>     <p><font size="2" face="Verdana">O paciente retornou, ap&oacute;s tr&ecirc;s meses para reavalia&ccedil;&atilde;o das restaura&ccedil;&otilde;es e da condi&ccedil;&atilde;o gengival. Nessa visita foi feito raspagem e alisamento corono&#45;radicular e refor&ccedil;o das orienta&ccedil;&otilde;es de higiene bucal (<a href="#fig06">Figura 6A</a>, <a href="#fig06">B</a>). Todas as etapas do tratamento, inclusive as imagens fotogr&aacute;ficas, bem como a publica&ccedil;&atilde;o desses resultados, foram realizadas ap&oacute;s assinatura do Termo de Consentimento Livre e Esclarecido pelo paciente e por seu respons&aacute;vel.</font></p>     <p><a name="fig06"></a></p>     <p>&nbsp;</p>     <p align="center"><img src="/img/revistas/rgo/v58n4/a17fig06.jpg"></p>     ]]></body>
<body><![CDATA[<p>&nbsp;</p>     <p><font size="3" face="Verdana"><b>DISCUSS&Atilde;O</b></font></p>     <p><font size="2" face="Verdana">O presente artigo descreve o relato de um paciente com amelog&ecirc;nese imperfeita do tipo hipopl&aacute;sica, que sofreu transplante renal decorrente de uma insufici&ecirc;ncia renal na inf&acirc;ncia. Sabe&#45;se que a amelog&ecirc;nese imperfeita &eacute; causada por muta&ccedil;&otilde;es em uma variedade de genes que s&atilde;o cr&iacute;ticos na forma&ccedil;&atilde;o do esmalte normal. Um total de cinco genes (AMELX, ENAM, KLK4, MMP20 e DLX3)<sup>15&#45;16</sup> &eacute; conhecido por estarem envolvidos na forma&ccedil;&atilde;o do esmalte. Muta&ccedil;&otilde;es no gene da amelogenina (AMELX) causam amelog&ecirc;nese imperfeita ligada ao cromossomo X, enquanto muta&ccedil;&otilde;es no gene da enamelina (ENAM) causam formas de heran&ccedil;a autoss&ocirc;mica. Outros genes como KLK4, MMP&#45;20 e DLX3 contribuem para a etiologia de outras variedades de amelog&ecirc;nese imperfeita que ainda est&atilde;o sendo pesquisadas<sup>5</sup>. </font></p>     <p><font size="2" face="Verdana">Apesar de a terminologia amelog&ecirc;nese imperfeita referir&#45;se a defeitos na forma&ccedil;&atilde;o de esmalte sem associa&ccedil;&atilde;o com achados cl&iacute;nicos sist&ecirc;micos, muitos autores t&ecirc;m inclu&iacute;do s&iacute;ndromes e desordens metab&oacute;licas como a causa da amelog&ecirc;nese imperfeita<sup>17</sup>. Atualmente, ela &eacute; considerada um grupo de condi&ccedil;&otilde;es gen&ocirc;micas na origem, a qual afeta a estrutura e a apar&ecirc;ncia clinica do esmalte, e que pode estar associada com altera&ccedil;&otilde;es morfol&oacute;gicas e bioqu&iacute;micas<sup>3</sup>. V&aacute;rios estudos t&ecirc;m mostrado a associa&ccedil;&atilde;o de doen&ccedil;as renais, como a nefrocalcinose, com a s&iacute;ndrome de amelog&ecirc;nese imperfeita<sup>18&#45;21</sup>. Esses estudos demonstram que pode haver uma associa&ccedil;&atilde;o entre a insufici&ecirc;ncia renal desenvolvida por esse paciente na inf&acirc;ncia e o defeito na forma&ccedil;&atilde;o de esmalte, devido a um dist&uacute;rbio da disponibilidade de c&aacute;lcio durante a amelog&ecirc;nese. O que n&atilde;o se sabe &eacute; se o diagn&oacute;stico precoce da amelog&ecirc;nese imperfeita poderia ter servido de indicador para o diagn&oacute;stico e tratamento precoce do dist&uacute;rbio renal, evitando assim a necessidade do transplante.</font></p>     <p><font size="2" face="Verdana">Com rela&ccedil;&atilde;o aos achados cl&iacute;nicos, sabe&#45;se que pacientes com amelog&ecirc;nese imperfeita apresentam problemas prim&aacute;rios como: les&otilde;es de c&aacute;rie, inflama&ccedil;&atilde;o gengival, est&eacute;tica comprometida, sensibilidade dental, perda de dimens&atilde;o vertical e mordida aberta anterior e posterior<sup>22</sup>. O tratamento de pacientes com amelog&ecirc;nese imperfeita &eacute; importante por raz&otilde;es psicossociais e funcionais. Alguns pacientes precisam receber apenas instru&ccedil;&otilde;es de higiene oral, enquanto outros precisam de tratamento dental extensos<sup>5</sup>. Gra&ccedil;as aos avan&ccedil;os recentes no campo da odontologia est&eacute;tica e prot&eacute;tica, &eacute; poss&iacute;vel restaurar a fun&ccedil;&atilde;o e est&eacute;tica mesmo de casos severos de amelog&ecirc;nese imperfeita<sup>5</sup>. Entretanto, para se tra&ccedil;ar o plano de tratamento deve&#45;se considerar al&eacute;m do tipo e da severidade da desordem, a idade e a condi&ccedil;&atilde;o s&oacute;cio&#45;econ&ocirc;mica. </font></p>     <p><font size="2" face="Verdana">Por muitos anos, a mais previs&iacute;vel e dur&aacute;vel restaura&ccedil;&atilde;o est&eacute;tica de dentes anteriores era alcan&ccedil;ada apenas com coroas completas<sup>23</sup>. Contudo, este tratamento requer a remo&ccedil;&atilde;o de grande quantidade de estrutura dent&aacute;ria sadia e representa um alto custo para o paciente. Esse caso ilustra que utilizando somente restaura&ccedil;&otilde;es diretas, &eacute; poss&iacute;vel reabilitar um paciente com amelog&ecirc;nese imperfeita. Esse caso vai de encontro a outros estudos que demonstraram que usando t&eacute;cnicas conservativas e de baixo custo, como restaura&ccedil;&otilde;es com resinas compostas, a est&eacute;tica desejada pode ser alcan&ccedil;ada, os dentes e estruturas suportes preservadas, e uma rela&ccedil;&atilde;o harmoniosa entre a oclus&atilde;o e a articula&ccedil;&atilde;o t&ecirc;mporo&#45;mandibular criada<sup>5,24</sup>. </font></p>     <p><font size="2" face="Verdana">Com rela&ccedil;&atilde;o &agrave; hiperplasia gengival observada no paciente, sabe&#45;se que ela dificulta a higiene dental, podendo levar ao desenvolvimento de focos de sepse oral que s&atilde;o potencialmente graves em pacientes imunocomprometidos<sup>25</sup>. A hiperplasia gengival &eacute; o principal efeito adverso na cavidade oral, decorrente do uso de ciclosporina<sup>26</sup>, ocorrendo em cerca de 20 a 45%, que a utilizam<sup>27</sup>. O crescimento gengival pode come&ccedil;ar nos primeiros seis meses ap&oacute;s o transplante, atingindo vari&aacute;vel extens&atilde;o, de pequenas altera&ccedil;&otilde;es na papila gengival ao recobrimento total da coroa do dente, geralmente relacionado &agrave; face vestibular dos dentes<sup>28</sup>. </font></p>     <p><font size="2" face="Verdana">A manuten&ccedil;&atilde;o de um programa de higiene oral rigoroso, em adi&ccedil;&atilde;o ao acompanhamento peri&oacute;dico de pacientes transplantados pode reduzir o grau de inflama&ccedil;&atilde;o gengival, a severidade da hiperplasia gengival e a necessidade de um tratamento mais radical <sup>29</sup>. </font></p>     <p>&nbsp;</p>     <p><font size="3" face="Verdana"><b>CONCLUS&Atilde;O</b></font></p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana">Um tratamento interdisciplinar &eacute; necess&aacute;rio para avaliar e diagnosticar o paciente com amelog&ecirc;nese imperfeita, principalmente quando esse apresenta outros dist&uacute;rbios sist&ecirc;micos e metab&oacute;licos. O plano de tratamento vem em uma segunda etapa para resolver problemas de sa&uacute;de e est&eacute;ticos usando uma combina&ccedil;&atilde;o de tratamentos. Quando o tratamento exige uma interven&ccedil;&atilde;o abrangente, como no caso relatado, uma comunica&ccedil;&atilde;o entre as disciplinas &eacute; fundamental para alcan&ccedil;ar melhores resultados est&eacute;ticos<sup>30</sup>. Assumindo uma postura conservadora e preventiva, &eacute; poss&iacute;vel reabilitar com sucesso, pacientes com est&eacute;tica severamente comprometida.</font></p>     <p>&nbsp;</p>     <p><font size="3" face="Verdana"><b>Colaboradores</b></font></p>     <p><font size="2" face="Verdana">SFL PINHEIRO orientou as alunas, acompanhou o paciente na segunda etapa do tratamento e redigiu o artigo. MJS CUNHA realizou o caso, contribuiu no levantamento bibliogr&aacute;fico e na reda&ccedil;&atilde;o do artigo. FCA AMORIM acompanhou o caso realizando as tomadas fotogr&aacute;ficas, o preenchimento das fichas cl&iacute;nicas e dos termos de consentimento. Participou, ainda, da reda&ccedil;&atilde;o do artigo e o adequou as normas de revista. MFF LOPES contribuiu com o levantamento bibliogr&aacute;fico e na tradu&ccedil;&atilde;o de artigos cient&iacute;ficos. IVA PINHEIRO orientou as alunas durante o in&iacute;cio do tratamento do paciente, na execu&ccedil;&atilde;o dos procedimentos cl&iacute;nicos, radiogr&aacute;ficos e fotogr&aacute;ficos. Participou na reda&ccedil;&atilde;o do artigo. </font></p>     <p>&nbsp;</p>     <p><font size="3" face="Verdana"><b>REFER&Ecirc;NCIAS</b></font></p>     <!-- ref --><p><font size="2" face="Verdana">1. Robinson FG, Haubenreich JE. Oral rehabilitation of a young adult with hypoplastic amelogenesis imperfecta: a clinical report. J Prosthet Dent. 2006;95(1):10&#45;3.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=200680&pid=S1981-8637201000040001700001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p><font size="2" face="Verdana">2.  Bouvier D, Duprez JP, Pirel C, Vincent B. Amelogenesis imperfecta &#45; a prosthetic rehabilitation: a clinical report. J Prosthet Dent. 1999;82(2):130&#45;1.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=200682&pid=S1981-8637201000040001700002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     ]]></body>
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<body><![CDATA[<!-- ref --><p><font size="2" face="Verdana">29.  Aimetti M, Romano F, Debernardi C. Effectiveness of periodontal therapy on the severity of cyclosporin A&#45;induced gingival overgrowth. J Clin Periodontol. 2005;32(8):846.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=200734&pid=S1981-8637201000040001700029&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p><font size="2" face="Verdana">30.  Claman L, Alfaro MA, Mercado A. An interdisciplinary approach for improved esthetic results in the anterior maxilla. J Prosthet Dent. 2003;89:1&#45;5.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=200736&pid=S1981-8637201000040001700030&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font size="2" face="Verdana">Recebido em: 10/3/2010    <br>   Aprovado em: 1/5/2010</font></p>     <p>&nbsp;</p>     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana"> <a name="nt"></a><a href="#tx">*</a> Correspond&ecirc;ncia para / <I>Correspondence to</I>: MJS CUNHA. <I>E&#45;mail</I>: &lt;<a href="mailto:merciacunha@hotmail.com">merciacunha@hotmail.com</a>&gt;</font></p>      ]]></body>
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