{"id":183737,"date":"2026-05-06T21:57:00","date_gmt":"2026-05-06T21:57:00","guid":{"rendered":"http:\/\/69fb8ac9d7c345f849c7d05f"},"modified":"2026-05-06T21:57:00","modified_gmt":"2026-05-06T21:57:00","slug":"el-origen-de-las-caries-esta-en-las-bacterias-no-en-el-azucar-en-si","status":"publish","type":"post","link":"https:\/\/sarmiento24h.com\/?p=183737","title":{"rendered":"El origen de las caries est\u00e1 en las bacterias, no en el az\u00facar en s\u00ed"},"content":{"rendered":"<p>En un experimento que suelen practicar los dentistas, se sumerge un diente durante toda la noche en un vaso de refresco de cola. A la ma\u00f1ana siguiente, la pieza aparece tan erosionada que resulta casi irreconocible. Si bien la acidez intr\u00ednseca de algunas bebidas puede corroer el esmalte, este tipo de experimentos parecen corroborar la creencia popular de que el az\u00facar desgasta los dientes.<\/p>\n<p>Sin embargo, la realidad es un poco m\u00e1s compleja: si verti\u00e9ramos <a href=\"https:\/\/es.wired.com\/articulos\/esta-startup-quiere-convertir-azucar-que-comes-en-fibra\">az\u00facar<\/a> en un recipiente completamente est\u00e9ril, no ocurrir\u00eda nada. De hecho, desde un punto de vista bioqu\u00edmico, <a href=\"https:\/\/es.wired.com\/articulos\/este-monitor-continuo-de-glucosa-ayuda-al-control-de-peso-pero-no-es-para-todos\">la glucosa<\/a> y sustancias similares son completamente inertes frente a la hidroxiapatita, el mineral que compone el esmalte. <strong>Y el proceso que provoca las caries no se debe directamente a la interacci\u00f3n entre el az\u00facar y <a href=\"https:\/\/es.wired.com\/articulos\/por-que-son-sensibles-los-dientes-por-que-provienen-de-la-coraza-de-un-molusco-de-hace-500-millones-de-anos-dice-estudio\">los dientes,<\/a> sino a las bacterias que encuentran en el az\u00facar<\/strong> y colonizan la superficie dental, lo que provoca corrosi\u00f3n debido a la producci\u00f3n de \u00e1cido.<\/p>\n<h2>\u00bfCu\u00e1l es la principal causa de las caries?<\/h2>\n<p><strong>El verdadero causante de la caries dental es el metabolismo de ciertas bacterias que pueblan la cavidad bucal, la m\u00e1s conocida de las cuales es <em>Streptococcus mutans<\/em>.<\/strong> Cuando introducimos carbohidratos fermentables (sacarosa, glucosa, fructosa, almidones cocidos) en nuestra boca, estos microorganismos los absorben y los transforman en \u00e1cido l\u00e1ctico mediante la gluc\u00f3lisis, y es precisamente este \u00e1cido el que ataca y disuelve los enlaces minerales del esmalte dental. Este fen\u00f3meno se describe bien mediante la llamada curva de Stephan, que representa el pH de la placa dental despu\u00e9s de consumir una <a href=\"https:\/\/es.wired.com\/articulos\/dieta-sin-carbohidratos-no-es-necesaria-es-perjudicial\">comida rica en az\u00facares.<\/a><\/p>\n<p>Cada vez que comemos algo dulce, el pH de la boca desciende en cuesti\u00f3n de minutos por debajo del umbral cr\u00edtico de 5.5, creando un ambiente lo suficientemente \u00e1cido como para desencadenar la desmineralizaci\u00f3n, es decir, la liberaci\u00f3n de iones de calcio y fosfato del esmalte. La saliva tarda entonces entre 20 y 40 minutos en neutralizar la acidez y restablecer el pH a niveles seguros, permitiendo que el diente se remineralice. <strong>El problema surge cuando las ingestas de alimentos son tan seguidas que la saliva no tiene tiempo de actuar: si se comen dulces o se beben bebidas azucaradas continuamente durante todo el d\u00eda, los dientes permanecen en la \u00abzona \u00e1cida\u00bb durante horas, lo que inevitablemente conduce a la formaci\u00f3n de caries.<\/strong><\/p>\n<div class=\"ContentCardEmbedWrapper-hkvhYu kMYDit content-card-embed content-card-embed--stacked\" data-testid=\"ContentCardEmbedWrapper\" readability=\"21.65625\">\n<div class=\"ContentCardEmbedImage-bqahne fjmzkP content-card-embed__image\" data-testid=\"ContentCardEmbedImage\"><span class=\"SpanWrapper-kFnjvc eKnjjD responsive-asset\"><picture class=\"ResponsiveImagePicture-jKunQM gjCCFj responsive-image\"><img decoding=\"async\" alt=\"Una familia reunida alrededor de la mesa comiendo pasta. El dipositivo de Prego en medio. \" loading=\"lazy\" class=\"ResponsiveImageContainer-dkeESL cQPiWi responsive-image__image\" srcset=\"https:\/\/media.es.wired.com\/photos\/69e7ae1d6b497dce1686d910\/master\/w_120,c_limit\/Prego-AI-Dinner-Bot-Gear-Prego_ConnectionKeeper-5.jpg 120w, https:\/\/media.es.wired.com\/photos\/69e7ae1d6b497dce1686d910\/master\/w_240,c_limit\/Prego-AI-Dinner-Bot-Gear-Prego_ConnectionKeeper-5.jpg 240w, https:\/\/media.es.wired.com\/photos\/69e7ae1d6b497dce1686d910\/master\/w_320,c_limit\/Prego-AI-Dinner-Bot-Gear-Prego_ConnectionKeeper-5.jpg 320w, https:\/\/media.es.wired.com\/photos\/69e7ae1d6b497dce1686d910\/master\/w_640,c_limit\/Prego-AI-Dinner-Bot-Gear-Prego_ConnectionKeeper-5.jpg 640w\" sizes=\"100vw\" src=\"https:\/\/media.es.wired.com\/photos\/69e7ae1d6b497dce1686d910\/master\/w_775%2Cc_limit\/Prego-AI-Dinner-Bot-Gear-Prego_ConnectionKeeper-5.jpg\"><\/picture><\/span><\/div>\n<div class=\"ContentCardEmbedInfo-buyHWH gWLOee\" readability=\"22.6875\">\n<div class=\"BaseText-fEwdHD ContentCardEmbedHed-kDKGDs fUtEc dlHXUJ content-card-embed__hed\" data-testid=\"ContentCardEmbedHed\"><a class=\"BaseLink-haTOKm ContentCardEmbedHedLink-iBZsco gAoKdC hhUFQU content-card-embed__hed-link link\" href=\"https:\/\/es.wired.com\/articulos\/dejarias-que-un-dispositivo-grabe-tu-cena-esta-marca-de-pasta-quiere-que-lo-hagas\" data-testid=\"ContentCardEmbedHedLink\">\u00bfDejar\u00edas que un dispositivo grabe tu cena? Esta marca de pasta quiere que lo hagas<\/a><\/div>\n<p>Prego se ha asociado con la organizaci\u00f3n sin fines de lucro StoryCorps en un dispositivo dise\u00f1ado para grabar las conversaciones familiares en torno a la mesa y guardarlas para siempre.<\/p>\n<\/div>\n<\/div>\n<h2>Una historia evolutiva escrita en el esmalte<\/h2>\n<p>El an\u00e1lisis de algunos restos f\u00f3siles ha revelado que nuestros antepasados cazadores-recolectores ten\u00edan unos dientes sorprendentemente sanos. El punto de inflexi\u00f3n, conocido como la \u00abrevoluci\u00f3n neol\u00edtica\u00bb, coincide con la llegada de la agricultura hace unos 10,000 a\u00f1os: la introducci\u00f3n masiva de cereales, es decir, hidratos de carbono f\u00e1cilmente convertibles en az\u00facares, alter\u00f3 dr\u00e1sticamente el genoma humano; y muchos milenios despu\u00e9s, en torno al siglo XIX, la industrializaci\u00f3n y la introducci\u00f3n del <a href=\"https:\/\/es.wired.com\/articulos\/sustitutos-de-azucar-danan-mas-de-lo-que-ayudan-dice-la-oms\">az\u00facar refinado<\/a> modificaron notablemente la composici\u00f3n de las bacterias de la cavidad bucal, como muestra un estudio publicado en <em>Nature<\/em> Genetics y realizado por el Australian Centre for Ancient DNA.<\/p>\n<p>Este cambio ha reducido la biodiversidad de nuestra boca, convirti\u00e9ndola en un entorno dominado por especies tolerantes al \u00e1cido: en este sentido, <strong>las caries son resultado de un \u00abdesajuste\u00bb entre nuestra evoluci\u00f3n biol\u00f3gica y los cambios bruscos en <a href=\"https:\/\/es.wired.com\/articulos\/deje-que-la-ia-controlara-mi-dieta-durante-semanas-y-aprendi-mas-de-lo-que-esperaba\">nuestra dieta<\/a><\/strong>. El esmalte dental ha evolucionado para resistir ataques \u00e1cidos espor\u00e1dicos, y no el bombardeo bioqu\u00edmico constante que resulta de la disponibilidad moderna de <a href=\"https:\/\/es.wired.com\/articulos\/la-adiccion-a-los-alimentos-ultraprocesados-es-mas-frecuente-en-adultos-que-el-alcohol-o-el-tabaco\">alimentos ultraprocesados.<\/a><\/p>\n<h2>No solo dulces<\/h2>\n<p>Otro error com\u00fan es pensar que solo los alimentos estrictamente dulces son peligrosos. De hecho, <strong>en lo que respecta al riesgo de caries, la textura de un alimento puede ser m\u00e1s importante que su contenido de az\u00facar.<\/strong> Los almidones cocidos y altamente procesados, como los que se encuentran en galletas, <a href=\"https:\/\/es.wired.com\/articulos\/como-reducir-la-grasa-de-las-papas-fritas-usando-tu-microondas-en-el-proceso\">patatas fritas<\/a> o pan blanco, tienden a volverse pegajosos al masticarlos y, por lo tanto, permanecen atrapados en los espacios interdentales durante m\u00e1s tiempo; el chocolate, por otro lado, se elimina m\u00e1s r\u00e1pidamente con la saliva.<\/p>\n<p>Adem\u00e1s, la acci\u00f3n de los llamados \u00abaz\u00facares libres\u00bb y los \u00abaz\u00facares intr\u00ednsecos\u00bb es diferente. En este sentido, comer una manzana entera es menos cariog\u00e9nico que beber zumo de manzana, tanto por la estimulaci\u00f3n de <a href=\"https:\/\/es.wired.com\/articulos\/una-nueva-prueba-de-saliva-para-diagnosticar-cancer-de-prostata-es-mas-precisa-que-los-examenes-de-sangre\">la saliva<\/a> causada por la masticaci\u00f3n como por la menor biodisponibilidad de los az\u00facares para <a href=\"https:\/\/es.wired.com\/articulos\/ciencia-mexicana-transforma-el-veneno-de-alacran-y-el-chile-habanero-en-antibioticos-contra-bacterias-resistentes\">las bacterias<\/a> de la placa.<\/p>\n<p><em>Art\u00edculo originalmente publicado en<\/em> <a href=\"https:\/\/www.wired.it\/article\/lo-zucchero-non-causa-diretta-delle-carie-ma-all-you-can-eat-dei-batteri-che-colonizzano-denti\/\">WIRED Italia.<\/a> <em>Adaptado por Alondra Flores.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>En un experimento que suelen practicar los&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":183738,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[46],"tags":[],"class_list":["post-183737","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tecnologia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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