<?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>1806-146X</journal-id>
<journal-title><![CDATA[IJD. International Journal of Dentistry]]></journal-title>
<abbrev-journal-title><![CDATA[IJD, Int. j. dent.]]></abbrev-journal-title>
<issn>1806-146X</issn>
<publisher>
<publisher-name><![CDATA[Universidade Federal de Pernambuco]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1806-146X2010000300005</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Avaliação clínica da aplicação subgengival de um gel de triclosan no tratamento de lesões de furca]]></article-title>
<article-title xml:lang="en"><![CDATA[Clinical evaluation of subgingival application of a triclosan gel in the treatment of periodontal furcation defects]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Velasco]]></surname>
<given-names><![CDATA[Fernanda Guerra]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santamaria]]></surname>
<given-names><![CDATA[Mauro Pedrine]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Shaddox]]></surname>
<given-names><![CDATA[Luciana Machion]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sallum]]></surname>
<given-names><![CDATA[Enilson Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sallum]]></surname>
<given-names><![CDATA[Antonio Wilson]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,UNICAMP FOP ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A02">
<institution><![CDATA[,University of Florida Departement of Periodontology and Oral Biology ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2010</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2010</year>
</pub-date>
<volume>9</volume>
<numero>3</numero>
<fpage>136</fpage>
<lpage>141</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://revodonto.bvsalud.org/scielo.php?script=sci_arttext&amp;pid=S1806-146X2010000300005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://revodonto.bvsalud.org/scielo.php?script=sci_abstract&amp;pid=S1806-146X2010000300005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://revodonto.bvsalud.org/scielo.php?script=sci_pdf&amp;pid=S1806-146X2010000300005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[O objetivo do presente estudo foi avaliar a efetividade da aplicação subgengival de um gel de triclosan-polidimetilsiloxano 1% como adjunto à instrumentação mecânica periodontal em lesões de bifurcação. Foram selecionados 30 pacientes com molares tendo profundidade de sondagem > 4mm e com envolvimento de furca em suas faces livres que foram aleatoreamente designados para os seguintes grupos: Grupo Teste: que recebeu raspagem e alisamento radicular mais aplicação de gel de triclosan ou Grupo Controle que recebeu raspagem e alisamento radicular mais aplicação de gel placebo . Após orientação de higiene oral e raspagem e alisamento radicular, o grupo teste recebeu aplicação do gel de triclosan 1% durante quatro semanas e o grupo controle recebeu gel placebo pelo mesmo período. Foram reavaliados, após 45 e 90 dias, o índice de placa (IP), sangramento à sondagem (SS), profundidade de sondagem (PS), nível de inserção clínica vertical (NIC-V) e nível de inserção clínica horizontal (NIC-H). Os resultados mostraram que aos 45 e 90 dias após o término da aplicação dos géis, houve melhora nos seguintes parâmetros clínicos: PS, NIC-V, SS e IP, quando comparados ao baseline. No entanto a mesma significância não foi encontrada no NIC-H, tanto no grupo teste, quanto no grupo controle. Quando feita a comparação intergrupo, não foi encontrada nenhuma diferença estatisticamente significante quanto aos parâmetros clínicos analisados. Dentro dos limites desse estudo pode-se concluir que a aplicação subgengival de um gel de triclosan não proporciona efeitos adicionais à terapia mecânica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[The aim of this study was to evaluate the effectiveness of subgingival irrigation with a gel of triclosan - polydimethylsiloxane 1% as to mechanical instrumentation in periodontal furcation defects. Thirty patients presenting probing depht of > 4mm and furcation involvement on the buccal surfaces of molars were randomly assigned to receive either scaling and root planning plus a triclosan gel (test group) or scaling and root planning plus a placebo gel (control group). Following oral hygiene instructions and scaling and root planing, the test group received the application of triclosan gel 1% once a week for four weeks and the control group received a placebo gel for the same period. Clinical parameters evaluated at baseline, 45 and 90 days were: plaque index (IP), bleeding on probing (SS), probing depth (PS), vertical clinical attachment level (NIC-V) and horizontal clinical attachment level (NIC-H). The results showed that after 45 and 90 days of the gels application, there were improvements in the following clinical parameters: PS, NIC-V, SS and IP, when compared to the baseline. No statistically significant improvement was found in NIC-H for any group. Intergroup comparisons showed no statistically significant differences regarding any of the clinical parameters analyzed. Within the limits of this study, it was concluded that repeated subgingival irrigations with a triclosan gel, as an adjunct to mechanical therapy, may not provide additional benefits in the treatment furcation defects.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Periodontite]]></kwd>
<kwd lng="pt"><![CDATA[Defeitos de Furca]]></kwd>
<kwd lng="pt"><![CDATA[Triclosan]]></kwd>
<kwd lng="pt"><![CDATA[Agentes Antibacterianos]]></kwd>
<kwd lng="en"><![CDATA[Periodontitis]]></kwd>
<kwd lng="en"><![CDATA[Furcation Defects]]></kwd>
<kwd lng="en"><![CDATA[Triclosan]]></kwd>
<kwd lng="en"><![CDATA[Anti-Bacterial Agents]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="right"><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>ARTIGO    ORIGINAL</b> ORIGINAL ARTICLE</font></p>     <p>&nbsp;</p>     <p><a name="top"></a><font face="Verdana, Arial, Helvetica, sans-serif" size="4"><b>Avalia&ccedil;&atilde;o    cl&iacute;nica da aplica&ccedil;&atilde;o subgengival de um gel de triclosan    no tratamento de les&otilde;es de furca</b></font></p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="3"><b>Clinical evaluation    of subgingival application of a triclosan gel in the treatment of periodontal    furcation defects</b></font></p>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Fernanda Guerra    Velasco<sup>I</sup>; Mauro Pedrine Santamaria<sup>II</sup>; Luciana Machion    Shaddox<sup>III</sup>; Enilson Antonio Sallum<sup>IV</sup>; Antonio Wilson Sallum<sup>IV</sup></b></font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><sup>I</sup>Mestre    em Periodontia pela FOP-UNICAMP    <br>   <sup>II</sup>Doutor em Periodontia pela FOP-UNICAMP    ]]></body>
<body><![CDATA[<br>   <sup>III</sup>Assistant Professor, Departement of Periodontology and Oral Biology,    University of Florida    <br>   <sup>IV</sup>Professores Titulares de Periodontia da FOP-UNICAMP</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><a href="#back">Correspond&ecirc;ncia</a></font></p>     <p>&nbsp;</p>     <p>&nbsp;</p> <hr size="1" noshade>     <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">O objetivo do presente    estudo foi avaliar a efetividade da aplica&ccedil;&atilde;o subgengival de um    gel de triclosan-polidimetilsiloxano 1% como adjunto &agrave; instrumenta&ccedil;&atilde;o    mec&acirc;nica periodontal em les&otilde;es de bifurca&ccedil;&atilde;o. Foram    selecionados 30 pacientes com molares tendo profundidade de sondagem <u>&gt;</u>    4mm e com envolvimento de furca em suas faces livres que foram aleatoreamente    designados para os seguintes grupos: Grupo Teste: que recebeu raspagem e alisamento    radicular mais aplica&ccedil;&atilde;o de gel de triclosan ou Grupo Controle    que recebeu raspagem e alisamento radicular mais aplica&ccedil;&atilde;o de    gel placebo . Ap&oacute;s orienta&ccedil;&atilde;o de higiene oral e raspagem    e alisamento radicular, o grupo teste recebeu aplica&ccedil;&atilde;o do gel    de triclosan 1% durante quatro semanas e o grupo controle recebeu gel placebo    pelo mesmo per&iacute;odo. Foram reavaliados, ap&oacute;s 45 e 90 dias, o &iacute;ndice    de placa (IP), sangramento &agrave; sondagem (SS), profundidade de sondagem    (PS), n&iacute;vel de inser&ccedil;&atilde;o cl&iacute;nica vertical (NIC-V)    e n&iacute;vel de inser&ccedil;&atilde;o cl&iacute;nica horizontal (NIC-H).    Os resultados mostraram que aos 45 e 90 dias ap&oacute;s o t&eacute;rmino da    aplica&ccedil;&atilde;o dos g&eacute;is, houve melhora nos seguintes par&acirc;metros    cl&iacute;nicos: PS, NIC-V, SS e IP, quando comparados ao <i>baseline.</i> No    entanto a mesma signific&acirc;ncia n&atilde;o foi encontrada no NIC-H, tanto    no grupo teste, quanto no grupo controle. Quando feita a compara&ccedil;&atilde;o    intergrupo, n&atilde;o foi encontrada nenhuma diferen&ccedil;a estatisticamente    significante quanto aos par&acirc;metros cl&iacute;nicos analisados. Dentro    dos limites desse estudo pode-se concluir que a aplica&ccedil;&atilde;o subgengival    de um gel de triclosan n&atilde;o proporciona efeitos adicionais &agrave; terapia    mec&acirc;nica.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Palavras-chave:</b>    Periodontite; Defeitos de Furca; Triclosan; Agentes Antibacterianos</font></p> <hr size="1" noshade>     <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">The aim of this    study was to evaluate the effectiveness of subgingival irrigation with a gel    of triclosan - polydimethylsiloxane 1% as to mechanical instrumentation in periodontal    furcation defects. Thirty patients presenting probing depht of <u>&gt;</u> 4mm    and furcation involvement on the buccal surfaces of molars were randomly assigned    to receive either scaling and root planning plus a triclosan gel (test group)    or scaling and root planning plus a placebo gel (control group). Following oral    hygiene instructions and scaling and root planing, the test group received the    application of triclosan gel 1% once a week for four weeks and the control group    received a placebo gel for the same period. Clinical parameters evaluated at    baseline, 45 and 90 days were: plaque index (IP), bleeding on probing (SS),    probing depth (PS), vertical clinical attachment level (NIC-V) and horizontal    clinical attachment level (NIC-H). The results showed that after 45 and 90 days    of the gels application, there were improvements in the following clinical parameters:    PS, NIC-V, SS and IP, when compared to the baseline. No statistically significant    improvement was found in NIC-H for any group. Intergroup comparisons showed    no statistically significant differences regarding any of the clinical parameters    analyzed. Within the limits of this study, it was concluded that repeated subgingival    irrigations with a triclosan gel, as an adjunct to mechanical therapy, may not    provide additional benefits in the treatment furcation defects.</font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><b>Key words:</b>    Periodontitis; Furcation Defects; Triclosan; Anti-Bacterial Agents</font></p> <hr size="1" noshade>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="3"><b>INTRODU&Ccedil;&Atilde;O</b></font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Estudos de longa    dura&ccedil;&atilde;o e observa&ccedil;&otilde;es cl&iacute;nicas t&ecirc;m    demonstrado que a combina&ccedil;&atilde;o de medidas mec&acirc;nicas de controle    do biofilme dental executadas pelo paciente e pelo profissional &eacute;, em    grande parte das vezes, efetiva para prevenir a ocorr&ecirc;ncia e a progress&atilde;o    das doen&ccedil;as periodontais<sup>1</sup>. Por&eacute;m, alguns estudos<sup>2,3</sup>    revelam que os procedimentos mec&acirc;nicos dispon&iacute;veis est&atilde;o    constantemente sujeitos a falhas, uma vez que n&atilde;o proporcionam a elimina&ccedil;&atilde;o    completa do biofilme supra e subgengival.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">A falha na completa    elimina&ccedil;&atilde;o do biofilme dental, muitas vezes, est&aacute; relacionada    &agrave;s dificuldades impostas pela anatomia da regi&atilde;o para se realizar    a instrumenta&ccedil;&atilde;o periodontal. Les&otilde;es de furca, em molares    superiores e inferiores, ilustram essa situa&ccedil;&atilde;o. Caracter&iacute;sticas    como o tamanho da entrada da furca e a presen&ccedil;a de concavidades nas ra&iacute;zes    tornam a instrumenta&ccedil;&atilde;o da &aacute;rea inter-radicular dif&iacute;cil,    mesmo quando realizado um retalho<sup>4</sup>. Um estudo<sup>5</sup> mostrou    que a terapia mec&acirc;nica pouco afeta a flora subgengival em les&otilde;es    de furca, quando comparada &agrave; mudan&ccedil;a microbiol&oacute;gica promovida    em les&otilde;es periodontais em dentes unirradiculares.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Alguns autores<sup>6,7</sup>    mostraram que a irriga&ccedil;&atilde;o subgengival de bolsas periodontais com    agentes antimicrobianos &eacute; eficaz contra a microflora subgengival e na    melhora dos par&acirc;metros cl&iacute;nicos de sa&uacute;de periodontal. Um    agente antimicrobiano que poderia ser usado para a irriga&ccedil;&atilde;o subgengival    &eacute; o triclosan. O triclosan &eacute; um composto n&atilde;o-i&ocirc;nico,    bisfen&oacute;lico, lipossol&uacute;vel, que apresenta propriedades antimicrobianas,    antiinflamat&oacute;rias e analg&eacute;sica<sup>8</sup>. A utiliza&ccedil;&atilde;o    desta droga como agente terap&ecirc;utico local em periodontia est&aacute; baseada    em estudos que demonstram que o triclosan apresenta a&ccedil;&atilde;o contra    muitos microrganismos associados &agrave; gengivite, bem como uma expressiva    redu&ccedil;&atilde;o de s&iacute;ntese de prostaglandinas<sup>9</sup> exercendo,    ent&atilde;o, um papel antinflamat&oacute;rio.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Estudos <i>in vitro<sup>10,11</sup>,</i>    em modelo animal<sup>12</sup> e cl&iacute;nico<sup>13</sup> demonstraram que    o triclosan apresenta atividade antimicrobiana de amplo espectro, inibindo bact&eacute;rias    gram positivas, gram negativas e fungos. Seu mecanismo de a&ccedil;&atilde;o    constitui em aumentar a permeabilidade da parede celular bacteriana, liberando    o conte&uacute;do citoplasm&aacute;tico. Em baixas concentra&ccedil;&otilde;es,    sua naturez a hidrof&oacute;bica e lipol&iacute;tica permite que o triclosan    seja adsorvido &agrave; membrana celular bacteriana e, quando em contato com    a por&ccedil;&atilde;o lip&iacute;dica desta, interfira nos mecanismos vitais    de transporte bacteriano<sup>13</sup>.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Diversos estudos    t&ecirc;m demonstrado que os produtos contendo triclosan reduz em n&atilde;o    somente o ac&uacute;mulo de biofilme dental, mas tamb&eacute;m diminuem o grau    de inflama&ccedil;&atilde;o gengival (o que poderia ser visto como uma mera    conseq&uuml;&ecirc;ncia da redu&ccedil;&atilde;o da quantidade de biofilme).    Por&eacute;m, outro trabalh <sup>14</sup> verificou que o triclosan apresenta    propriedade antiinflamat&oacute;ria independente de seu potencial antimicrobiano.    Muitas especula&ccedil;&otilde;es t&ecirc;m sido feitas sobre o mecanismo antiinflamat&oacute;rio    do triclosan. Um estudo <sup>15</sup> demonstrou que o triclosan reduz a forma&ccedil;&atilde;o    de prostaglandinas E<sub>2</sub> (PGE<sub>2</sub>) em fibroblastos gengivais    estimulados por lauril sulfato de s&oacute;dio. Outro trabalho <sup>16</sup>    demonstrou <i>in vitro</i> que o triclosan inibe as vias de inflama&ccedil;&atilde;o    lipoxigenase e cicloxigenase, reduzindo a s&iacute;ntese de leucotrienos e prostaglandinas.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">A realiza&ccedil;&atilde;o    de um estudo cl&iacute;nico tamb&eacute;m demonstrou que a aplica&ccedil;&atilde;o    subgengival de um gel de triclosan-polidimetilsiloxino&nbsp; em&nbsp; dentes    unirradiculares, juntamente com raspagem e alisamento radicular, melhorou alguns    par&acirc;metros cl&iacute;nicos tais como: n&iacute;vel de inser&ccedil;&atilde;o    cl&iacute;nica e profundidade de sondagem<sup>17</sup>. Portanto, o presente    estudo teve o objetivo de avaliar clinicamente a aplica&ccedil;&atilde;o subgengival    de um gel de triclosan coadjuvante &agrave; instrumenta&ccedil;&atilde;o mec&acirc;nica    em les&otilde;es de furca, com o intuito de promover ganhos nos n&iacute;veis    de inser&ccedil;&atilde;o cl&iacute;nica, &iacute;ndice de sangramento, diminui&ccedil;&atilde;o    na profundidade de sondagem e altera&ccedil;&atilde;o da presen&ccedil;a de    biofilme quando comparados aos resultados obtidos com a instrumenta&ccedil;&atilde;o    periodontal associada &agrave; um gel controle.</font></p>     ]]></body>
<body><![CDATA[<p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="3"><b>MATERIAL E M&Eacute;TODOS</b></font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Ap&oacute;s o projeto    ter sido submetido ao Comit&ecirc; de &Eacute;tica em Pesquisa da Faculdade    de Odontologia de Piracicaba-UNICAMP e aprovado (protocolo: 064/2002), 30 pacientes    da cl&iacute;nica de Periodontia da Fop-Unicamp foram selecionados para o estudo    seguindo os seguintes crit&eacute;rios de inclus&atilde;o:</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">&#149; Pacientes    portadores de Doen&ccedil;a Periodontal Cr&ocirc;nica, de 25 a 70 anos, de ambos    os g&ecirc;neros;</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">&#149; Presen&ccedil;a    de les&atilde;o de furca (grau I ou II) em faces livres (vestibular e lingual    de molares inferiores e face vestibular de molares superiores), com profundidade    de sondagem m&iacute;nima de 4mm e sangramento &agrave; sondagem;</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">&#149; Aus&ecirc;ncia    de altera&ccedil;&otilde;es periapicais, pulpares ou de oclus&atilde;o;</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">&#149; Aus&ecirc;ncia    de altera&ccedil;&otilde;es sist&ecirc;micas (altera&ccedil;&otilde;es cardiovasculares,    discrasias sangu&iacute;neas, imunodefici&ecirc;ncia, diabetes entre outras)    ou uso de medicamentos tr&ecirc;s meses anteriores ao estudo que pudessem influenciar    a resposta ao tratamento, tais como: antibi&oacute;ticos, antiinflamat&oacute;rios    ou anti-hipertensivos;</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">&#149; Aus&ecirc;ncia    de tratamento periodontal, incluindo instrumenta&ccedil;&atilde;o subgengival,    nos seis meses anteriores ao estudo.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">&#149; Pacientes    n&atilde;o deveriam ser: fumantes, gestantes e usu&aacute;rias de contraceptivos    durante o estudo e nos tr&ecirc;s meses antecessores ao mesmo.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">&#149; Consentimento    formal para a participa&ccedil;&atilde;o na pesquisa, ap&oacute;s a explica&ccedil;&atilde;o    dos riscos e benef&iacute;cios por indiv&iacute;duo n&atilde;o envolvido na    mesma (Resolu&ccedil;&atilde;o nº 196 de outubro de 1996 e C&oacute;digo de    &Eacute;tica Profissional Odontol&oacute;gico - C.F.O. - 179/93).</font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Um examinador independente    e previamente calibrado foi respons&aacute;vel pela aferi&ccedil;&atilde;o das    medidas tanto no <i>baseline</i> quanto nas reavalia&ccedil;&otilde;es sem saber    qual o tratamento cada s&iacute;tio iria receber, ou havia recebido. Os par&acirc;metros    medidos no <i>baseline</i> e nas reavalia&ccedil;&otilde;es foram: &Iacute;ndice    de Placa (IP)<sup>18</sup>; Sangramento &agrave; Sondagem (SS)<sup>19</sup>;    Profundidade de Sondagem (PS); N&iacute;vel de Inser&ccedil;&atilde;o Cl&iacute;nica    (NIC-V); N&iacute;vel de Inser&ccedil;&atilde;o Cl&iacute;nica Horizontal do    defeito de furca (NIC-H).</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Para medi&ccedil;&atilde;o    dos par&acirc;metros PS, NIC-V e RG, foi utilizada sonda milimetrada Carolina    do Norte (15mm) e para o par&acirc;metro NIC-H foi utilizada uma sonda milimetrada    curva<sup>21</sup>.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><i>Delineamento    do estudo:</i></font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">O estudo paralelo,    aleat&oacute;rio e duplo cego teve por objetivo a avalia&ccedil;&atilde;o cl&iacute;nica    do efeito de um gel de triclosan 1% / polidimetilsiloxano 13% associado &agrave;    raspagem e alisamento radicular no tratamento de les&otilde;es de furca. Os    pacientes foram divididos aleatoriamente em 2 grupos:</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">&#149; Grupo A:    15 pacientes submetidos &agrave; raspagem e alisamento radicular associado &agrave;    irriga&ccedil;&atilde;o subgengival com gel contendo triclosan 1% (Irgasan,    CIBA GEIGY, S&atilde;o Paulo, SP) e &oacute;leo de silicone 13% (Fluido 200    - DOW CORNING, SP).</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">&#149; Grupo B:    15 pacientes submetidos &agrave; raspagem e alisamento radicular associado &agrave;    irriga&ccedil;&atilde;o subgengival com gel placebo (&oacute;leo de silicone    13%).</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">O gel apresentava    a seguinte formula&ccedil;&atilde;o: polidimetilsiloxano 13%, &aacute;lcool    90gl. 7.5ml, gel de notrosol 75%, &aacute;gua destilada q.s.q. 30g e triclosan    1%.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Os pacientes dos    dois grupos receberam instru&ccedil;&atilde;o de higiene oral, incluindo t&eacute;cnica    de escova&ccedil;&atilde;o e t&eacute;cnica de limpeza interdental com uso de    fio/fita dental ou escova interdental. O refor&ccedil;o das instru&ccedil;&otilde;es    foi feito a cada retorno.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Os s&iacute;tios    eleitos para o estudo receberam raspagem e alisamento radicular. A instrumenta&ccedil;&atilde;o    foi feita por um mesmo operador, diferente do qual fez as medidas dos par&acirc;metros    cl&iacute;nicos. A instrumenta&ccedil;&atilde;o foi realizada uma &uacute;nica    vez, no <i>baseline,</i> sob anestesia local e utilizando somente curetas Gracey.    A instrumenta&ccedil;&atilde;o foi feita at&eacute; que a superf&iacute;cie    radicular ficasse lisa, de acordo com o julgamento do operador.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Ap&oacute;s a instrumenta&ccedil;&atilde;o,    foi aplicado o gel de triclosan no grupo A e placebo no grupo B, subgengivalmente,    sem que o operador soubesse o conte&uacute;do dos mesmos. As irriga&ccedil;&otilde;es    foram feitas com seringas descart&aacute;veis equipadas com c&acirc;nula 40-60    de ponta romba. A ponta da c&acirc;nula foi introduzida at&eacute; o fundo da    bolsa e o mais dentro poss&iacute;vel da les&atilde;o de furca. Ent&atilde;o    o gel correspondente foi despejado dentro da les&atilde;o at&eacute; que houvesse    o extravasamento do mesmo. As irriga&ccedil;&otilde;es foram feitas durante    quatro semanas, uma vez por semana.</font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana, Arial, Helvetica, sans-serif" size="2"><i>Medi&ccedil;&otilde;es</i></font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">As medidas dos    par&acirc;metros cl&iacute;nicos foram obtidas no <i>baseline e</i> aos 45 e    90 dias ap&oacute;s o &uacute;ltimo dia de irriga&ccedil;&atilde;o.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Os resultados foram    submetidos &agrave; an&aacute;lise estat&iacute;stica. Os grupos teste e controle    sofrem avalia&ccedil;&atilde;o intragrupo atrav&eacute;s do teste de Friedman    e uma avalia&ccedil;&atilde;o intergrupo atrav&eacute;s do teste de Mann-Whitney.</font></p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="3"><b>RESULTADOS</b></font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Ap&oacute;s 45    e 90 dias do t&eacute;rmino dos tratamentos, os seguintes resultados puderam    ser observados: o &iacute;ndice de placa, que no come&ccedil;o do estudo <i>(baseline)</i>    era de 60% para o grupo controle e 65% para o teste teve uma redu&ccedil;&atilde;o    estatisticamente significante para ambos os grupos (p&lt;0,05), e mantiveram-se    entre 20-27% n&oacute;s per&iacute;odoos&nbsp; p&oacute;s-operat&oacute;rios,&nbsp;    sem apresentarem diferen&ccedil;a estatisticamente significante entre os grupos    (<a href="#f1">Figura 1</a>). O sangramento &agrave; sondagem foi de 83% para    o grupo teste e 86% para o controle no baseline e passou para 36.6% aos 45 dias    e 24.0% aos 90 dias no grupo teste. No grupo controle o &iacute;ndice de sangramento    foi para 40% aos 45 dias e 28.3% aos 90 dias. Quando a compara&ccedil;&atilde;o    intragrupo foi feita, a redu&ccedil;&atilde;o foi estatisticamente significante    para ambos os grupos, por&eacute;m sem diferen&ccedil;a entre eles. Quando foi    avaliado o sangramento a sondagem das les&otilde;es de furca inclu&iacute;das    no estudo, tamb&eacute;m pode ser observada uma redu&ccedil;&atilde;o estatisticamente    significante na frequ&ecirc;ncia de sangramento a sondagem para ambos os grupos    no per&iacute;odo final em rela&ccedil;&atilde;o ao inicial, por&eacute;m sem    diferen&ccedil;a entre os grupos (p &gt; 0.05), apesar de uma maior redu&ccedil;&atilde;o    na freq&uuml;&ecirc;ncia de sangramento no grupo teste (<a href="#f2">Figura    2</a>).</font></p>     <p><a name="f1"></a></p>     <p>&nbsp;</p>     <p align="center"><img src="/img/revistas/ijd/v9n3/05f01.jpg"></p>     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p><a name="f2"></a></p>     <p>&nbsp;</p>     <p align="center"><img src="/img/revistas/ijd/v9n3/05f02.jpg"></p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Quando foram comparadas    as profundidades de sondagem, n&atilde;o houve diferen&ccedil;a estatisticamente    significante na redu&ccedil;&atilde;o desse par&acirc;metro entre o grupo teste    e o grupo controle tanto aos 45 quanto aos 90 dias. No <i>baseline,</i> o grupo    controle tinha uma m&eacute;dia de 5.53mm de profundidade de sondagem, enquanto    o grupo teste tinha 5.33mm. Ap&oacute;s a terapia mec&acirc;nica, os dois grupos    apresentaram redu&ccedil;&atilde;o na profundidade de sondagem estatisticamente    significante aos 45 dias, com uma m&eacute;dia de 3,66 mm (p=0,02) para o grupo    controle e 3,46mm (p=0,019) para o grupo teste e mantiveram-se sem diferen&ccedil;a    at&eacute; 90 dias, com uma m&eacute;dia de profundidade de sondagem de 3,53mm    (p=0,89) para o grupo controle e de 3,33mm (p=0,076) para o grupo teste (<a href="#f3">Figura    3</a>).</font></p>     <p><a name="f3"></a></p>     <p align="center"><img src="/img/revistas/ijd/v9n3/05f03.jpg"></p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Em rela&ccedil;&atilde;o    ao N&iacute;vel de Inser&ccedil;&atilde;o Vertical (NIC-V), quando as diferen&ccedil;as    das medidas obtidas no <i>baseline</i> aos 45 dias e aos 90 dias foram comparadas,    houve diferen&ccedil;a estatisticamente significante nos grupos teste (p=0,05    em 45 dias e p= 0,02 em 90 dias) e controle (p=0,05 em 45 dias e p = 0,046 em    90 dias). Inicialmente, o grupo teste apresentava 5,93 mm (em m&eacute;dia)    de N&Iacute;C-V, 5,13 mm aos 45 dias e 4,93 mm aos 90 dias. No grupo controle    foram obtidos os seguintes resultados: no <i>baseline</i> foi encontrada uma    m&eacute;dia de 5,53 mm, e tanto aos 45 quanto aos 90 dias, 4,86 mm (p = 0,36    e p=0,77, respectivamente). No entanto quando o grupo teste foi comparado ao    grupo controle, n&atilde;o houve diferen&ccedil;a estatisticamente significante    das m&eacute;dias (<a href="#f4">Figura 4</a>).</font></p>     <p><a name="f4"></a></p>     ]]></body>
<body><![CDATA[<p>&nbsp;</p>     <p align="center"><img src="/img/revistas/ijd/v9n3/05f04.jpg"></p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Do ponto de vista    do N&iacute;vel de Inser&ccedil;&atilde;o Cl&iacute;nica Horizontal (NIC-H),    houve um pequeno ganho na m&eacute;dia dos dois grupos nas reavalia&ccedil;&otilde;es    de 45 (p=0,69) e 90 dias (p=0,38), por&eacute;m sem diferen&ccedil;a estatisticamente    significante tanto na avalia&ccedil;&atilde;o intragrupo quanto na intergrupo.    O grupo controle apresentava, inicialmente, uma m&eacute;dia de NIC-H de 7 mm    e o grupo teste 7,13mm. Aos 45 dias o grupo teste apresentou uma m&eacute;dia    de 6,2 mm e aos 90 dias, uma m&eacute;dia de 5,93 mm. J&aacute; o grupo controle    apresentou uma m&eacute;dia de 6,4 mm aos 45 dias e 6,2 mm aos 90 dias. Tais    diferen&ccedil;as n&atilde;o foram estatisticamente significantes.</font></p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="3"><b>DISCUSS&Atilde;O</b></font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">O presente estudo    foi desenhado para testar a hip&oacute;tese de que a irriga&ccedil;&atilde;o    subgengival com gel de triclosan, feita durante quatro semanas, uma vez por    semana, melhoraria os par&acirc;metros cl&iacute;nicos de sa&uacute;de periodontal    em les&otilde;es de furca grau I e grau II. O controle de placa e a instrumenta&ccedil;&atilde;o    mec&acirc;nica das les&otilde;es de furca resultaram numa melhora em ambos os    grupos do ponto de vista do sangramento &agrave; sondagem, profundidade de sondagem    e n&iacute;vel de inser&ccedil;&atilde;o cl&iacute;nica vertical. Apesar de    n&atilde;o ter havido diferen&ccedil;a estat&iacute;stica no par&acirc;metro    de sangramento &agrave; sondagem, pode-se observar que o grupo teste apresentou    um menor n&uacute;mero de s&iacute;tios que sangraram nas reavalia&ccedil;&otilde;es    em rela&ccedil;&atilde;o ao grupo controle. Esse fato pode ser explicado pela    a&ccedil;&atilde;o antiinflamat&oacute;ria que o triclosan apresenta. Esse resultado    est&aacute; em concord&acirc;ncia com os resultados obtidos em um estudo<sup>20</sup>.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Entretanto, no    presente estudo o gel de triclosan/polidimetilsiloxano n&atilde;o proporcionou    benef&iacute;cios adicionais significantes &agrave; instrumenta&ccedil;&atilde;o    mec&acirc;nica. Algumas hip&oacute;teses podem explicar esses resultados. Uma    delas &eacute; que o debridamento mec&acirc;nico pode ter sido suficiente e    houve pouca contamina&ccedil;&atilde;o remanescente na bolsa para que o triclosan    exercesse o seu efeito antibi&oacute;tico fazendo com que esse n&atilde;o promovesse    benef&iacute;cios adicionais. Uma outra hip&oacute;tese &eacute; a de que a    dura&ccedil;&atilde;o das irriga&ccedil;&otilde;es podem ter sido insuficientes    para atingir os microrganismos remanescentes e com isso o tempo em que o triclosan    permaneceu dentro da bolsa ou em contato com os microrganismos remanescentes    podem ter sido insuficientes.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Diversos estudos    com sistemas de antimicriobianos de libera&ccedil;&atilde;o local t&ecirc;m    demonstrado que uma das principais caracter&iacute;sticas que esses sistemas    tem que apresentar para uma melhor efic&aacute;cia cl&iacute;nica &eacute; a    libera&ccedil;&atilde;o controlada. Os sistemas e dispositivos mais eficazes    s&atilde;o aqueles que conseguem manter uma concentra&ccedil;&atilde;o maior    do que a concentra&ccedil;&atilde;o inibit&oacute;ria minima por um per&iacute;odo    maior do que 24hs. Alguns sistemas como microesferas contendo minocilinca (Arestin<sup>&reg;</sup>)    ou gel de doxiciclina (Atridox<sup>&reg;</sup>) demonstraram efic&aacute;cia    cl&iacute;nica e promoveram benef&iacute;cios adicionais aos procedimentos mec&acirc;nicos    de raspagem e alisamento radicular<sup>21,22</sup>.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Diversos estudos    tentaram avaliar a efic&aacute;cia cl&iacute;nica de outros agentes antimicrobianos    que possuem uma potente a&ccedil;&atilde;o antimicrobiana <i>in vitro.</i> Zanatta    e colaboradores<sup>23</sup> avaliaram o efeito da utiliza&ccedil;&atilde;o    de uma solu&ccedil;&atilde;o de iodo povidine como terapia adjunta &agrave;    terapia mec&acirc;nica em doen&ccedil;a periodontal. Os autores concluiram que    a solu&ccedil;&atilde;o de iodo n&atilde;o promove benef&iacute;cios adicionais    &agrave; terapia periodontal convencional. O mesmo grupo de pesquisadores, avaliou    o efeito do iodo na tratamento das les&otilde;es de bifurca&ccedil;&atilde;o<sup>24</sup>.    Os autores tamb&eacute;m observaram a aus&ecirc;ncia de benef&iacute;cios adicionais    &agrave; terapia mec&acirc;nica das les&otilde;es de furca e atribuem a aus&ecirc;ncia    de resultados adicionais tamb&eacute;m devido a falta da manuten&ccedil;&atilde;o    de uma concentra&ccedil;&atilde;o m&iacute;nima por um per&iacute;odo de tempo    adequado dentro do sulco gengival.</font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">A coloca&ccedil;&atilde;o    de solu&ccedil;&otilde;es dentro o sulco gengival ou de bolsas periodontais    tende a ser perdida rapidamente. Isso se deve ao fato de o sulco gengival ser    lavado muitas vezes por hora pelo exudado produzido pelo tecido conjuntivo gengival.    Esse exudato se move em dire&ccedil;&atilde;o coronal e cria um fluxo de l&iacute;quido    para dentro do sulco gengival. Esse fluxo exerce uma a&ccedil;&atilde;o mec&acirc;nica    que tende a expulsar qualquer solu&ccedil;&atilde;o ou corpo que est&aacute;    dentro do sulco gengival ou bolsa periodontal. Isso faz com os agentes antimicrobianos    colocados dentro do sulco sejam lavados rapidamente e assim tenha seu efeito    reduzido ou mesmo impedido. Isso pode ajudar a explicar a falta de benef&iacute;cios    adicionais do triclosan no presente.</font></p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="3"><b>CONCLUS&Atilde;O</b></font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">A aplica&ccedil;&atilde;o    de um gel de triclosan/polidimetilsiloxano&nbsp; como coadjuvante &agrave; terapia    mec&acirc;nica em les&otilde;es de furca n&atilde;o promove uma melhora nos    par&acirc;metros cl&iacute;nicos de n&iacute;vel de inser&ccedil;&atilde;o cl&iacute;nica,    profundidade &agrave; sondagem, sangramento &agrave; sondagem e &iacute;ndice    de placa quando comparado &agrave; terapia mec&acirc;nica e placebo.</font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Um ve&iacute;culo    que promova uma libera&ccedil;&atilde;o controlada do agente antimicrobiano    talvez melhore o desempenho do mesmo.</font></p>     <p>&nbsp;</p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="3"><b>REFER&Ecirc;NCIAS</b></font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">1. Kaldahl WB,    Kalkwarf KL, Patil KD. A review of longitudinal studies that compared periodontal    therapies. J Periodontol 1993;64:243-253.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=082894&pid=S1806-146X201000030000500001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">2. Magnusson I,    Lndhe J, Yoneyama T, Liljenberg B. Recolonization of a subgingival microbiota    following scaling in deep pockets. 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<body><![CDATA[<br>   CEP 13414-903    <br>   A/C Departamento de Periodontia    <br>   Email: <a href="mailto:maurosantamaria@gmail.com">maurosantamaria@gmail.com</a></font></p>     <p><font face="Verdana, Arial, Helvetica, sans-serif" size="2">Recebido em 27/08/2010    <br>   Aceito em 21/09/2010</font></p>      ]]></body>
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