{"id":43687,"date":"2025-10-23T11:24:38","date_gmt":"2025-10-23T09:24:38","guid":{"rendered":"https:\/\/sambacademy.com\/?p=43687"},"modified":"2025-10-23T13:30:54","modified_gmt":"2025-10-23T11:30:54","slug":"les-differents-types-de-lasers-utilises-en-medecine-esthetique","status":"publish","type":"post","link":"https:\/\/sambacademy.com\/fr\/les-differents-types-de-lasers-utilises-en-medecine-esthetique\/","title":{"rendered":"Les diff\u00e9rents types de lasers utilis\u00e9s en m\u00e9decine esth\u00e9tique"},"content":{"rendered":"\n<p>En m\u00e9decine esth\u00e9tique, les traitements au laser repr\u00e9sentent une grosse partie de l&rsquo;activit\u00e9. C&rsquo;est l&rsquo;une des sp\u00e9cialit\u00e9s dans lesquelles il y a la plus grande vari\u00e9t\u00e9 de longueurs d&rsquo;onde LASER \u00e0 disposition pour diverses indications.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Les principales indications laser en m\u00e9decine esth\u00e9tique&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L&rsquo;\u00e9pilation permanente des poils<\/li>\n\n\n\n<li>Le traitement des taches pigmentaires<\/li>\n\n\n\n<li>Le traitement des rougeurs (t\u00e9langiectasies, angiomes)<\/li>\n\n\n\n<li>Le traitement par resurfacing pour le grain de peau et les ridules<\/li>\n\n\n\n<li>Le d\u00e9tatouage<\/li>\n<\/ul>\n\n\n\n<p>Face \u00e0 la vari\u00e9t\u00e9 des LASER existant en m\u00e9decine esth\u00e9tique et leur potentiel d\u2019effets secondaires, il est tr\u00e8s important de bien comprendre les fondamentaux des lasers m\u00e9dicaux, qui sont les m\u00eames, quel que soit le type de laser.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Les fondamentaux des lasers m\u00e9dicaux<\/h3>\n\n\n\n<p>Tout d&rsquo;abord L.A.S.E.R c\u2019est un acronyme anglais. \u00c7a signifie dire Light Amplification by Stimulated Emission of Radiation.<\/p>\n\n\n\n<p>La grande particularit\u00e9 de ces lumi\u00e8res amplifi\u00e9es r\u00e9side dans le fait qu&rsquo;elles n&rsquo;\u00e9mettent que dans une seule et unique longueur d&rsquo;onde.<\/p>\n\n\n\n<p>Et c&rsquo;est de l\u00e0 que des petits malins se sont dit&nbsp;: \u00ab&nbsp;Comme la lumi\u00e8re est absorb\u00e9e par la mati\u00e8re color\u00e9e, si ma lumi\u00e8re n&rsquo;a qu&rsquo;une seule longueur d&rsquo;onde, elle risque d&rsquo;\u00eatre absorb\u00e9e par une mati\u00e8re d\u2019une seule couleur.&nbsp;\u00bb &nbsp;<\/p>\n\n\n\n<p>Et c&rsquo;est exactement en pratique ce qui a \u00e9t\u00e9 constat\u00e9. <em>C&rsquo;\u00e9tait le d\u00e9but des lasers m\u00e9dicaux.<\/em><\/p>\n\n\n\n<p>Un peu plus techniquement pour \u00e9mettre dans une seule longueur d&rsquo;onde, il fallait trouver des milieux actifs qui \u00e9mettent une seule longueur d\u2019onde en \u00e9tant stimul\u00e9s. &nbsp;<\/p>\n\n\n\n<p>Les chercheurs en physique en ont trouv\u00e9 plusieurs avec de jolis noms&nbsp;:<\/p>\n\n\n\n<p><em>\u00ab&nbsp;Alexandrite, Ruby, Nd-Yag, notamment utilis\u00e9s en m\u00e9decine esth\u00e9tique<\/em>&nbsp;\u00bb<\/p>\n\n\n\n<p>Chacune de ces longueurs d\u2019onde \u00e9mises par un milieu actif a un spectre d\u2019absorption qui lui est propre.<\/p>\n\n\n\n<p>C\u2019est-\u00e0-dire que la longueur d\u2019onde (le faisceau laser pour simplifier) va \u00eatre absorb\u00e9e principalement par une seule couleur.&nbsp;<\/p>\n\n\n\n<p>Dans la peau on trouve&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Du rouge<\/strong>&nbsp;: le sang, avec les globules rouges (\u00e9rythrocytes).<\/li>\n\n\n\n<li><strong>Du noir<\/strong>&nbsp;: avec la m\u00e9lanine<\/li>\n\n\n\n<li><strong>Du transparent<\/strong> (eau)&nbsp;: avec le collag\u00e8ne, l\u2019acide hyaluronique, l\u2019\u00e9lastine.<\/li>\n<\/ul>\n\n\n\n<p>Ces cibles color\u00e9es sont appel\u00e9es les CHROMOPHORES (m\u00e9lanine, \u00e9rythrocyte, eau).<\/p>\n\n\n\n<p>Donc, on peut S\u00c9LECTIVEMENT traiter (d\u00e9truire), un chromophore en pr\u00e9servant le reste de la peau.<\/p>\n\n\n\n<p>En r\u00e9sum\u00e9, le laser c&rsquo;est simple c&rsquo;est une longueur d&rsquo;onde absorb\u00e9e par une couleur pr\u00e9sente dans le corps humain, ce qui permet de faire des traitements sp\u00e9cifiques de la cible sans alt\u00e9rer le reste du tissu.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"965\" height=\"496\" src=\"https:\/\/sambacademy.com\/wp-content\/uploads\/2025\/10\/image-5.png\" alt=\"\" class=\"wp-image-43690\" srcset=\"https:\/\/sambacademy.com\/wp-content\/uploads\/2025\/10\/image-5.png 965w, https:\/\/sambacademy.com\/wp-content\/uploads\/2025\/10\/image-5-300x154.png 300w, https:\/\/sambacademy.com\/wp-content\/uploads\/2025\/10\/image-5-768x395.png 768w\" sizes=\"(max-width: 965px) 100vw, 965px\" \/><\/figure>\n\n\n\n<p>Une fois que les chercheurs ont compris et assimil\u00e9 cela, les domaines d\u2019applications se sont multipli\u00e9s autour des milieux actifs connus.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">&nbsp;<\/h3>\n\n\n\n<h3 class=\"wp-block-heading\">Les principaux milieux actifs LASER en m\u00e9decine esth\u00e9tique<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Milieu actif<\/strong><\/td><td><strong>Longueur d\u2019onde<\/strong><\/td><td><strong>Cible<\/strong><\/td><td><strong>Applications principales<\/strong><\/td><\/tr><\/thead><tbody><tr><td><em>Ruby<\/em><\/td><td>694 nm<\/td><td>M\u00e9lanine<\/td><td colspan=\"2\">\u00c9pilation, d\u00e9tatouage, taches pigmentaires<\/td><\/tr><tr><td><em>Alexandrite<\/em><\/td><td>755 nm<\/td><td>M\u00e9lanine<\/td><td colspan=\"2\">\u00c9pilation, taches pigmentaires<\/td><\/tr><tr><td><em>Diode<\/em><\/td><td>800\u2013980 nm<\/td><td>M\u00e9lanine<\/td><td colspan=\"2\">\u00c9pilation, vascularisation superficielle<\/td><\/tr><tr><td><em>Nd:YAG<\/em><\/td><td>1064 nm<\/td><td>M\u00e9lanine + h\u00e9moglobine<\/td><td colspan=\"2\">&nbsp; \u00c9pilation phototypes fonc\u00e9s, varicosit\u00e9s, traitement vasculaire profond<\/td><\/tr><tr><td><em>KTP<\/em><\/td><td>532 nm<\/td><td>H\u00e9moglobine, m\u00e9lanine superficielle<\/td><td colspan=\"2\">L\u00e9sions vasculaires superficielles, taches rouges, angiomes, t\u00e9langiectasies<\/td><\/tr><tr><td><em>Colorant puls\u00e9<\/em><\/td><td>585\u2013595 nm<\/td><td>H\u00e9moglobine<\/td><td colspan=\"2\">Angiomes plans, t\u00e9langiectasies, rosac\u00e9e, cicatrices rouges<\/td><\/tr><tr><td><em>CO\u2082<\/em><\/td><td>10600 nm<\/td><td>Eau<\/td><td colspan=\"2\">Resurfa\u00e7age intense, rides profondes, cicatrices, l\u00e9sions k\u00e9ratosiques<\/td><\/tr><tr><td><em>Er:YAG<\/em><\/td><td>2940 nm<\/td><td>Eau<\/td><td colspan=\"2\">Resurfa\u00e7age superficiel, rides fines, cicatrices superficielles<\/td><\/tr><tr><td><em>Erbium glass<\/em><\/td><td>1540\u20131550 nm<\/td><td>Eau<\/td><td colspan=\"2\">Rajeunissement cutan\u00e9, am\u00e9lioration texture, cicatrices superficielles<\/td><\/tr><tr><td><em>Thulium<\/em><\/td><td>1927\u20131940 nm<\/td><td>Eau<\/td><td colspan=\"2\">Rajeunissement, am\u00e9lioration du teint, cicatrices superficielles<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">L\u2019interaction entre le LASER et la peau.<\/h3>\n\n\n\n<p>Le faisceau laser, comme la lumi\u00e8re, lorsqu&rsquo;il rentre en contact avec la peau, va \u00eatre&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Absorb\u00e9, notamment dans notre cas par la m\u00e9lanine<\/li>\n\n\n\n<li>Transmis, c&rsquo;est la partie qui n&rsquo;est pas absorb\u00e9e du faisceau laser et qui continue dans la m\u00eame direction<\/li>\n\n\n\n<li>Diffus\u00e9, c&rsquo;est l&rsquo;\u00e9nergie lat\u00e9rale du faisceau laser<\/li>\n\n\n\n<li>R\u00e9fl\u00e9chi<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">&nbsp;<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"574\" height=\"571\" src=\"https:\/\/sambacademy.com\/wp-content\/uploads\/2025\/10\/image-4.png\" alt=\"\" class=\"wp-image-43688\" srcset=\"https:\/\/sambacademy.com\/wp-content\/uploads\/2025\/10\/image-4.png 574w, https:\/\/sambacademy.com\/wp-content\/uploads\/2025\/10\/image-4-300x298.png 300w, https:\/\/sambacademy.com\/wp-content\/uploads\/2025\/10\/image-4-150x150.png 150w\" sizes=\"(max-width: 574px) 100vw, 574px\" \/><\/figure>\n\n\n\n<p>Selon le type de peau et \u00e9ventuellement le fait d&rsquo;avoir mis une cr\u00e8me ou non, ces facteurs peuvent varier, mais dans des proportions faibles.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">En conclusion<\/h3>\n\n\n\n<p>Vous l&rsquo;aurez compris, les lasers c&rsquo;est de la physique, c&rsquo;est de l\u2019optique, qui laisse peu de place \u00e0 l&rsquo;interpr\u00e9tation, si ce n&rsquo;est la clinique.<\/p>\n\n\n\n<p>Il faut donc, pour \u00eatre un bon praticien LASER, ma\u00eetriser les fondamentaux \u00e0 travers des formations s\u00e9rieuses, bas\u00e9es sur des preuves.<\/p>\n\n\n\n<p>Mais avant tout, vous devez rester un m\u00e9decin clinicien et savoir choisir le laser et les bons param\u00e8tres pour chaque type de peau et chaque cible que l&rsquo;on souhaite traiter.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les lasers occupent une place essentielle en m\u00e9decine esth\u00e9tique. Leur fonctionnement repose sur des principes physiques pr\u00e9cis permettant de cibler s\u00e9lectivement la m\u00e9lanine, l\u2019h\u00e9moglobine ou l\u2019eau selon la longueur d\u2019onde utilis\u00e9e. D\u00e9couvrez les diff\u00e9rents types de lasers, leurs indications et les bases indispensables \u00e0 une pratique s\u00e9curis\u00e9e et efficace.<\/p>\n","protected":false},"author":2,"featured_media":43692,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","_joinchat":[],"footnotes":"","_links_to":"","_links_to_target":""},"categories":[45],"tags":[],"class_list":["post-43687","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles-fr"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Les diff\u00e9rents types de lasers utilis\u00e9s en m\u00e9decine esth\u00e9tique - SAMBA<\/title>\n<meta name=\"description\" content=\"Les lasers occupent une place centrale en m\u00e9decine esth\u00e9tique. 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