{"id":2482,"date":"2026-01-29T17:19:28","date_gmt":"2026-01-29T14:19:28","guid":{"rendered":"https:\/\/wiki.dev.voka.io\/glossary\/placa-bacteriana\/"},"modified":"2026-03-03T10:31:55","modified_gmt":"2026-03-03T07:31:55","slug":"placa-bacteriana","status":"publish","type":"glossary_item","link":"https:\/\/wiki.dev.voka.io\/pt\/glossario\/placa-bacteriana\/","title":{"rendered":"Placa bacteriana"},"content":{"rendered":"\n<p>Placa bacteriana (em latim: <em>placa dentalis<\/em>) \u00e9 um dep\u00f3sito macio, pegajoso e n\u00e3o mineralizado que adere firmemente \u00e0 superf\u00edcie do dente. Representa uma col\u00f4nia complexa, organizada e de m\u00faltiplas esp\u00e9cies de microrganismos embebidos em uma matriz de polissacar\u00eddeo protetora. <\/p>\n\n<p>A placa bacteriana \u00e9 o principal fator etiol\u00f3gico no desenvolvimento de c\u00e1ries e doen\u00e7as periodontais.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x44D;&#x442;&#x438;&#x43E;&#x43B;&#x43E;&#x433;&#x438;&#x44F;-&#x438;-&#x43F;&#x430;&#x442;&#x43E;&#x444;&#x438;&#x437;&#x438;&#x43E;&#x43B;&#x43E;&#x433;&#x438;&#x44F;\"><strong>Etiologia e fisiopatologia<\/strong><\/h2>\n\n<p>As bact\u00e9rias dentro da placa, predominantemente <em>Streptococcus mutans<\/em>, metabolizam carboidratos dos alimentos em \u00e1cidos org\u00e2nicos. Esses \u00e1cidos s\u00e3o retidos pelo biofilme diretamente na superf\u00edcie do esmalte, causando sua dissolu\u00e7\u00e3o qu\u00edmica prolongada. O processo de forma\u00e7\u00e3o da placa come\u00e7a minutos ap\u00f3s a limpeza dos dentes e passa por est\u00e1gios de forma\u00e7\u00e3o de pel\u00edcula, ades\u00e3o de bact\u00e9rias e matura\u00e7\u00e3o do biofilme.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x43A;&#x43B;&#x438;&#x43D;&#x438;&#x447;&#x435;&#x441;&#x43A;&#x43E;&#x435;-&#x437;&#x43D;&#x430;&#x447;&#x435;&#x43D;&#x438;&#x435;\"><strong>Import\u00e2ncia cl\u00ednica<\/strong><\/h2>\n\n<p>A pel\u00edcula n\u00e3o pode ser removida apenas com \u00e1gua e requer remo\u00e7\u00e3o mec\u00e2nica usando escova de dentes e fio dental ou escovas interdentais. Sem higiene regular, os minerais na saliva fazem com que o dep\u00f3sito macio se mineralize e se desenvolva em c\u00e1lculo dent\u00e1rio. A presen\u00e7a constante de biofilme mant\u00e9m um ambiente \u00e1cido, o que leva \u00e0 dissolu\u00e7\u00e3o dos minerais do esmalte e \u00e0 forma\u00e7\u00e3o de les\u00f5es cariadas.<\/p>\n\n<p>Ao atingir a dentina, al\u00e9m de continuar a produ\u00e7\u00e3o de \u00e1cido, as bact\u00e9rias do biofilme tamb\u00e9m come\u00e7am a liberar enzimas proteol\u00edticas. O processo causa a degrada\u00e7\u00e3o do componente org\u00e2nico da dentina, o col\u00e1geno. As toxinas liberadas pelas bact\u00e9rias provocam inflama\u00e7\u00e3o das gengivas e destrui\u00e7\u00e3o do ligamento periodontal.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Placa bacteriana (em latim: <em>placa dentalis<\/em>) \u00e9 um dep\u00f3sito macio, pegajoso e n\u00e3o mineralizado que adere firmemente \u00e0 superf\u00edcie do dente. Representa uma col\u00f4nia complexa, organizada e de m\u00faltiplas esp\u00e9cies de microrganismos embebidos em uma matriz de polissacar\u00eddeo protetora.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-2482","glossary_item","type-glossary_item","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v26.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Placa bacteriana: defini\u00e7\u00e3o m\u00e9dica e vis\u00e3o geral | Voka Wiki<\/title>\n<meta name=\"description\" content=\"Placa bacteriana (em latim: placa dentalis) \u00e9 um dep\u00f3sito macio, pegajoso e n\u00e3o mineralizado que adere firmemente \u00e0 superf\u00edcie do dente. 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