{"id":15022,"date":"2025-12-02T09:00:00","date_gmt":"2025-12-02T06:00:00","guid":{"rendered":"https:\/\/otexe.com\/?p=15022"},"modified":"2025-11-29T01:20:28","modified_gmt":"2025-11-28T22:20:28","slug":"the-role-of-hypochlorous-acid-in-the-sanitization-of-dental-unit-waterlines","status":"publish","type":"post","link":"https:\/\/otexe.com\/en\/the-role-of-hypochlorous-acid-in-the-sanitization-of-dental-unit-waterlines\/","title":{"rendered":"The role of hypochlorous acid in the sanitization of dental unit waterlines"},"content":{"rendered":"<p data-start=\"630\" data-end=\"1238\">One of the least noticeable but most serious sources of microbiological threat in modern dentistry remains the dental unit waterlines (DUWLs). Despite advancements in filtration systems, stricter sanitation protocols, and decades of research, the water used in dental handpieces often becomes a reservoir for pathogenic microorganisms. The problem of biofilms\u2014complex microbial structures resistant to most standard disinfection procedures \u2014 continues to hinder the achievement of stable microbiological safety.  <\/p>\n<p data-start=\"1240\" data-end=\"1585\">A new study investigating the efficacy of a neutralized electrolyzed chlorinated water solution (ECAS) opens the prospect of using less aggressive and more environmentally friendly disinfectants. In the context of growing attention to the safety of patients and medical staff, such solutions are becoming particularly significant. <\/p>\n<h3 data-start=\"1641\" data-end=\"1772\"><strong data-start=\"1645\" data-end=\"1772\">Neutralized ECAS demonstrates high efficacy in combating biofilm in dental unit waterlines<\/strong><\/h3>\n<p data-start=\"1774\" data-end=\"2259\">The new study showed that neutralized electrolyzed chlorinated water solution effectively reduces the number of planktonic bacteria and destroys biofilm in contaminated dental unit waterlines. The use of ECAS, combining shock treatment and subsequent maintenance therapy, demonstrated promising potential as a safer, low-chlorine alternative to traditional sodium hypochlorite. <\/p>\n<h3 data-start=\"2261\" data-end=\"2310\"><strong data-start=\"2265\" data-end=\"2310\">Historical context and scope of the problem<\/strong><\/h3>\n<p data-start=\"2312\" data-end=\"3006\">Since 1963, when Blake first reported on DUWL contamination, microbiological safety issues have remained a focus for researchers. It has been proven that without treatment, the bacterial load can exceed 200,000 CFU\/mL in just five days\u2014a figure far exceeding the limit of 500 CFU\/mL recommended by the American Dental Association (ADA) and the U.S. Centers for Disease Control and Prevention (CDC). Despite years of effort, chemical cleaning methods have not always provided stable results: biofilms in waterlines persisted, and isolated cases of patient infection raised the need for new solutions.  <\/p>\n<h3 data-start=\"3008\" data-end=\"3055\"><strong data-start=\"3012\" data-end=\"3055\">ECAS: Chemical Nature and Advantages<\/strong><\/h3>\n<p data-start=\"3057\" data-end=\"3645\">A study published in the <a href=\"_wp_link_placeholder\" data-wplink-edit=\"true\"><em data-start=\"3088\" data-end=\"3132\">Journal of the American Dental Association <\/em><\/a>evaluated ECAS as an alternative to sodium hypochlorite. ECAS is a chlorine-containing disinfectant solution with a neutral pH, whose main active component is hypochlorous acid. Unlike harsher chemical reagents, ECAS is environmentally friendly, safe for tissues, and decomposes into plain water after use. Furthermore, it possesses a broad spectrum of bactericidal action\u2014against bacteria, yeasts, and fungi\u2014with minimal toxicity and irritant effects.   <\/p>\n<h3 data-start=\"3647\" data-end=\"3691\"><strong data-start=\"3651\" data-end=\"3691\">Treatment protocols and their efficacy<\/strong><\/h3>\n<p data-start=\"3693\" data-end=\"3751\">The study compared two protocols for ECAS application:<\/p>\n<ul data-start=\"3753\" data-end=\"4014\">\n<li data-start=\"3753\" data-end=\"3925\">\n<p data-start=\"3755\" data-end=\"3925\">Group A: periodic shock treatment with concentrated ECAS followed by daily use of a diluted solution as a maintenance agent;<\/p>\n<\/li>\n<li data-start=\"3926\" data-end=\"4014\">\n<p data-start=\"3928\" data-end=\"4014\">Group B: more frequent shock treatments without an emphasis on daily mild therapy.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"4016\" data-end=\"4209\">Both protocols led to a significant reduction in bacterial counts. However, Group B achieved ADA and CDC standards faster and maintained them consistently throughout the entire observation period. <\/p>\n<p data-start=\"4211\" data-end=\"4452\">Scanning electron microscopy data confirmed that ECAS not only reduces the concentration of free-floating (planktonic) bacteria but also disrupts the structure of established biofilm, making it more vulnerable to subsequent treatments.<\/p>\n<h3 data-start=\"4454\" data-end=\"4509\"><strong data-start=\"4458\" data-end=\"4509\">Reduction of chlorine load and equipment protection<\/strong><\/h3>\n<p data-start=\"4511\" data-end=\"4993\">It is particularly important that ECAS demonstrated efficacy at significantly lower chlorine levels compared to the concentrations typically used with sodium hypochlorite. This reduces the risk of equipment corrosion and makes the treatment process safer for both the equipment and the staff. Although the long-term impact of ECAS on older units requires further study, high compatibility with materials such as stainless steel and copper has already been demonstrated.  <\/p>\n<hr data-start=\"5459\" data-end=\"5462\">\n<h2 data-start=\"5464\" data-end=\"5550\"><strong data-start=\"5467\" data-end=\"5550\">Conclusion: ECAS as a new direction in microbiological risk prevention<\/strong><\/h2>\n<p data-start=\"5552\" data-end=\"5913\">The presented study demonstrates that ECAS has the potential to change established approaches to disinfecting dental unit waterlines. Its neutrality, environmental friendliness, minimal aggressiveness towards equipment, and proven efficacy in combating biofilms make it an attractive tool for use in clinical practice. <\/p>\n<p data-start=\"5915\" data-end=\"6289\">In an environment where the safety of patients and staff requires continuous improvement of sanitation protocols, ECAS could form the basis for a new standard of care. Further research will undoubtedly refine the optimal application regimens and long-term effects; however, even today, the technology demonstrates compelling advantages over traditional methods. <\/p><p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>One of the least noticeable but most serious sources of microbiological threat in modern dentistry remains the dental unit waterlines (DUWLs). Despite advancements in filtration systems, stricter sanitation protocols, and decades of research, the water used in dental handpieces often becomes a reservoir for pathogenic microorganisms. The problem of biofilms\u2014complex microbial structures resistant to most [&hellip;]<\/p>\n","protected":false},"author":20,"featured_media":15019,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"quote","meta":{"pmpro_default_level":"","footnotes":""},"categories":[266],"tags":[],"class_list":["post-15022","post","type-post","status-publish","format-quote","has-post-thumbnail","hentry","category-new-in-dentistry","post_format-post-format-quote","pmpro-has-access"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The role of hypochlorous acid in the sanitization of dental unit waterlines - OTEXE<\/title>\n<meta name=\"description\" content=\"The problem of microbial contamination in dental unit waterlines (DUWLs) remains one of the most discussed topics in the infection control of modern dental equipment. Accumulated research shows that DUWLs are a persistent reservoir for the formation of biofilms\u2014highly organized microbial structures that are dozens of times more resistant to disinfection than free-floating cells. In recent years, researchers&#039; attention has been drawn to alternative disinfecting agents capable of combining high efficacy, low toxicity, and safety for equipment. Electrolyzed chlorinated water solution with a neutral pH (ECAS) is gradually coming to the forefront as one of the promising solutions. Against the backdrop of data presented in the new study, it is relevant to consider ECAS within the broader body of scientific publications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/otexe.com\/en\/the-role-of-hypochlorous-acid-in-the-sanitization-of-dental-unit-waterlines\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The role of hypochlorous acid in the sanitization of dental unit waterlines - OTEXE\" \/>\n<meta property=\"og:description\" content=\"The problem of microbial contamination in dental unit waterlines (DUWLs) remains one of the most discussed topics in the infection control of modern dental equipment. Accumulated research shows that DUWLs are a persistent reservoir for the formation of biofilms\u2014highly organized microbial structures that are dozens of times more resistant to disinfection than free-floating cells. In recent years, researchers&#039; attention has been drawn to alternative disinfecting agents capable of combining high efficacy, low toxicity, and safety for equipment. Electrolyzed chlorinated water solution with a neutral pH (ECAS) is gradually coming to the forefront as one of the promising solutions. Against the backdrop of data presented in the new study, it is relevant to consider ECAS within the broader body of scientific publications.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/otexe.com\/en\/the-role-of-hypochlorous-acid-in-the-sanitization-of-dental-unit-waterlines\/\" \/>\n<meta property=\"og:site_name\" content=\"OTEXE\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/otexeworld\/reviews\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-02T06:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/otexe.com\/wp-content\/uploads\/2025\/09\/gettyimages-960268798-750x430-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"750\" \/>\n\t<meta property=\"og:image:height\" content=\"430\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"news bot\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@otexeworld\" \/>\n<meta name=\"twitter:site\" content=\"@otexeworld\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"news bot\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/otexe.com\/en\/the-role-of-hypochlorous-acid-in-the-sanitization-of-dental-unit-waterlines\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/otexe.com\/en\/the-role-of-hypochlorous-acid-in-the-sanitization-of-dental-unit-waterlines\/\"},\"author\":{\"name\":\"news bot\",\"@id\":\"https:\/\/otexe.com\/en\/#\/schema\/person\/9140d95fa9a582da764836aeeea66419\"},\"headline\":\"The role of hypochlorous acid in the sanitization of dental unit waterlines\",\"datePublished\":\"2025-12-02T06:00:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/otexe.com\/en\/the-role-of-hypochlorous-acid-in-the-sanitization-of-dental-unit-waterlines\/\"},\"wordCount\":645,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/otexe.com\/en\/#organization\"},\"image\":{\"@id\":\"https:\/\/otexe.com\/en\/the-role-of-hypochlorous-acid-in-the-sanitization-of-dental-unit-waterlines\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/otexe.com\/wp-content\/uploads\/2025\/09\/gettyimages-960268798-750x430-1.jpg\",\"articleSection\":[\"New in Dentistry\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/otexe.com\/en\/the-role-of-hypochlorous-acid-in-the-sanitization-of-dental-unit-waterlines\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/otexe.com\/en\/the-role-of-hypochlorous-acid-in-the-sanitization-of-dental-unit-waterlines\/\",\"url\":\"https:\/\/otexe.com\/en\/the-role-of-hypochlorous-acid-in-the-sanitization-of-dental-unit-waterlines\/\",\"name\":\"The role of hypochlorous acid in the sanitization of dental unit waterlines - OTEXE\",\"isPartOf\":{\"@id\":\"https:\/\/otexe.com\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/otexe.com\/en\/the-role-of-hypochlorous-acid-in-the-sanitization-of-dental-unit-waterlines\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/otexe.com\/en\/the-role-of-hypochlorous-acid-in-the-sanitization-of-dental-unit-waterlines\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/otexe.com\/wp-content\/uploads\/2025\/09\/gettyimages-960268798-750x430-1.jpg\",\"datePublished\":\"2025-12-02T06:00:00+00:00\",\"description\":\"The problem of microbial contamination in dental unit waterlines (DUWLs) remains one of the most discussed topics in the infection control of modern dental equipment. 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Accumulated research shows that DUWLs are a persistent reservoir for the formation of biofilms\u2014highly organized microbial structures that are dozens of times more resistant to disinfection than free-floating cells. In recent years, researchers' attention has been drawn to alternative disinfecting agents capable of combining high efficacy, low toxicity, and safety for equipment. Electrolyzed chlorinated water solution with a neutral pH (ECAS) is gradually coming to the forefront as one of the promising solutions. 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Accumulated research shows that DUWLs are a persistent reservoir for the formation of biofilms\u2014highly organized microbial structures that are dozens of times more resistant to disinfection than free-floating cells. In recent years, researchers' attention has been drawn to alternative disinfecting agents capable of combining high efficacy, low toxicity, and safety for equipment. Electrolyzed chlorinated water solution with a neutral pH (ECAS) is gradually coming to the forefront as one of the promising solutions. 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