{"id":5628,"date":"2026-05-05T12:07:28","date_gmt":"2026-05-05T05:07:28","guid":{"rendered":"https:\/\/phuongthanh.vn\/?post_type=dental_knowledge&#038;p=5628"},"modified":"2026-05-05T12:20:54","modified_gmt":"2026-05-05T05:20:54","slug":"saliva","status":"publish","type":"dental_knowledge","link":"https:\/\/phuongthanh.vn\/en\/dental-knowledge\/saliva\/","title":{"rendered":"Saliva \u2013 A Tiny Fluid That Controls Nearly the Entire Oral Health System"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title ez-toc-toggle\" style=\"cursor:pointer\">Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #000000;color:#000000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #000000;color:#000000\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/phuongthanh.vn\/en\/dental-knowledge\/saliva\/#I_More_Than_Just_Water_A_%E2%80%9CComplete_Biological_System%E2%80%9D\" >I. More Than Just Water: A \u201cComplete Biological System\u201d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/phuongthanh.vn\/en\/dental-knowledge\/saliva\/#II_Why_Does_Saliva_Prevent_Tooth_Decay\" >II. Why Does Saliva Prevent Tooth Decay?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/phuongthanh.vn\/en\/dental-knowledge\/saliva\/#III_The_Invisible_Protective_Layer_for_Teeth\" >III. The Invisible Protective Layer for Teeth<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/phuongthanh.vn\/en\/dental-knowledge\/saliva\/#IV_Its_Role_in_Digestion_and_Overall_Health\" >IV. Its Role in Digestion and Overall Health<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/phuongthanh.vn\/en\/dental-knowledge\/saliva\/#V_Why_Is_Saliva_Deficiency_Dangerous\" >V. Why Is Saliva Deficiency Dangerous?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/phuongthanh.vn\/en\/dental-knowledge\/saliva\/#VI_Saliva_%E2%80%93_A_%E2%80%9CNon-Invasive_Biological_Test%E2%80%9D\" >VI. Saliva \u2013 A \u201cNon-Invasive Biological Test\u201d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/phuongthanh.vn\/en\/dental-knowledge\/saliva\/#VII_Conclusion\" >VII. Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">When you experience dry mouth, difficulty swallowing, or loss of appetite, it is not merely a temporary sensation. It is a sign that the body is lacking an important factor: <strong>saliva<\/strong>. Few people realize that the body secretes approximately 500\u2013700 ml of saliva every day, a biological fluid that may seem simple yet participates in most functions ranging from eating, protecting teeth, to digestion and immunity.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"I_More_Than_Just_Water_A_%E2%80%9CComplete_Biological_System%E2%80%9D\"><\/span><span style=\"font-family: arial, helvetica, sans-serif; font-size: 18pt;\"><strong>I. More Than Just Water: A \u201cComplete Biological System\u201d<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-size: 12pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-5613 size-full\" style=\"display: block; padding: 0; margin: auto;\" src=\"https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/nuocbot.jpg\" alt=\"Saliva\" width=\"630\" height=\"333\" srcset=\"https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/nuocbot.jpg 630w, https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/nuocbot-300x159.jpg 300w, https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/nuocbot-150x79.jpg 150w\" sizes=\"auto, (max-width: 630px) 100vw, 630px\" \/><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Scientifically, <strong>saliva<\/strong> consists of up to <strong>99% water<\/strong>, but the remaining 1% is what truly \u201cmakes the difference.\u201d<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">It contains:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Enzymes (amylase, lipase)<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Protective proteins (mucin, histatin)<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Mineral ions (calcium, phosphate)<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Antibodies (IgA)<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">This combination makes saliva not merely a moistening substance, but a <strong>continuously functioning biological system<\/strong>.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"II_Why_Does_Saliva_Prevent_Tooth_Decay\"><\/span><span style=\"font-family: arial, helvetica, sans-serif; font-size: 18pt;\"><strong>II. Why Does Saliva Prevent Tooth Decay?<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-size: 12pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-5615 size-full\" style=\"display: block; padding: 0; margin: auto;\" src=\"https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/nuocbot1.jpg\" alt=\"\" width=\"500\" height=\"330\" srcset=\"https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/nuocbot1.jpg 500w, https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/nuocbot1-300x198.jpg 300w, https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/nuocbot1-150x99.jpg 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">After eating, bacteria in the mouth metabolize sugar into acid.<\/span><br \/>\n<span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">This acid lowers the pH below 5.5 \u2013 the threshold at which tooth enamel begins to dissolve.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\"><strong>Saliva<\/strong> intervenes through 3 mechanisms:<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 14pt;\"><strong>2.<\/strong><strong>1 Acid Neutralization (Buffering)<\/strong><\/span><\/h3>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 50%;\"><span style=\"font-size: 12pt;\"> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-5619 size-full\" src=\"https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/nuocbot2.jpg\" alt=\"\" width=\"1024\" height=\"683\" srcset=\"https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/nuocbot2.jpg 1024w, https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/nuocbot2-300x200.jpg 300w, https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/nuocbot2-150x100.jpg 150w, https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/nuocbot2-768x512.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/span><\/td>\n<td style=\"width: 50%;\"><span style=\"font-size: 12pt;\"><a href=\"https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/Bicarbonate_resonance.svg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-5617 \" src=\"https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/Bicarbonate_resonance.svg\" alt=\"\" width=\"664\" height=\"538\" \/><\/a><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\"><strong>Saliva<\/strong> contains <strong>bicarbonate<\/strong> \u2013 a substance capable of \u201cbuffering pH.\u201d<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Mechanism:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Acid increases \u2192 bicarbonate increases<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">pH is restored to a safe level<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">When saliva flow increases (for example, during chewing), this buffering capacity becomes significantly stronger.<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 14pt;\"><strong>2.<\/strong><strong>2 Enamel Remineralization<\/strong><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-5621 size-full\" style=\"display: block; padding: 0; margin: auto;\" src=\"https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/taikhoang.jpg\" alt=\"\" width=\"628\" height=\"393\" srcset=\"https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/taikhoang.jpg 628w, https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/taikhoang-300x188.jpg 300w, https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/taikhoang-150x94.jpg 150w\" sizes=\"auto, (max-width: 628px) 100vw, 628px\" \/><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\"><a href=\"https:\/\/phuongthanh.vn\/kien-thuc-nha-khoa\/danh-rang-ngay-sau-khi-an-co-tot-cho-rang-mieng-2\/\"><strong>Tooth enamel<\/strong><\/a> is not a \u201cdead\u201d structure.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">It is constantly in a state of balance:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\"><strong>Demineralization<\/strong> (caused by acid)<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\"><strong>Remineralization<\/strong> (supported by saliva)<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Saliva contains calcium and phosphate in a \u201csupersaturated\u201d state.<\/span><br \/>\n<span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">When the environment stabilizes, these ions redeposit onto the enamel surface.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Simply put:<\/span><br \/>\n<span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\"><strong>Saliva helps teeth \u201crepair\u201d tiny daily damages on their own.<\/strong><\/span><\/p>\n<h3 style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 14pt;\"><strong>2.3 Direct Antibacterial Action<\/strong><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-5623 size-full\" src=\"https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/khangkhuan.png\" alt=\"\" width=\"1408\" height=\"768\" srcset=\"https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/khangkhuan.png 1408w, https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/khangkhuan-300x164.png 300w, https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/khangkhuan-1024x559.png 1024w, https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/khangkhuan-150x82.png 150w, https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/khangkhuan-768x419.png 768w\" sizes=\"auto, (max-width: 1408px) 100vw, 1408px\" \/><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Saliva contains many substances capable of destroying bacteria:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\"><strong>Lysozyme<\/strong>: breaks down bacterial cell walls<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\"><strong>Lactoferrin<\/strong>: \u201csteals\u201d iron, preventing bacterial growth<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\"><strong>Histatin<\/strong>: kills fungi and bacteria<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\"><strong>IgA<\/strong>: aggregates bacteria so they can be swallowed away<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">This is a form of local immunity that works continuously without conscious effort.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"III_The_Invisible_Protective_Layer_for_Teeth\"><\/span><span style=\"font-family: arial, helvetica, sans-serif; font-size: 18pt;\"><strong>III. The Invisible Protective Layer for Teeth<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-size: 12pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-5625 size-full\" style=\"display: block; padding: 0; margin: auto;\" src=\"https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/pellicle.webp\" alt=\"\" width=\"600\" height=\"379\" srcset=\"https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/pellicle.webp 600w, https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/pellicle-300x190.webp 300w, https:\/\/phuongthanh.vn\/wp-content\/uploads\/2026\/05\/pellicle-150x95.webp 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Immediately after teeth are cleaned, <strong>saliva<\/strong> forms a very thin protein layer called the <strong>pellicle<\/strong>.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Essentially:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">It consists of salivary proteins adhering to the enamel surface<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Creating a \u201cbiological barrier\u201d<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Research shows that this layer can significantly reduce the rate of mineral loss when exposed to acid.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">In other words:<\/span><br \/>\n<span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\"><strong>Before you even do anything, saliva has already created an \u201carmor layer\u201d for your teeth.<\/strong><\/span><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"IV_Its_Role_in_Digestion_and_Overall_Health\"><\/span><span style=\"font-family: arial, helvetica, sans-serif; font-size: 18pt;\"><strong>IV. Its Role in Digestion and Overall Health<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\"><strong>Saliva<\/strong> does not stop at the oral cavity.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">When swallowed, it continues to:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Neutralize refluxed stomach acid<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Protect the esophageal lining<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Support the initial stages of digestion<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">In particular, bicarbonate in saliva helps reduce acid-related damage to the esophagus \u2013 a factor associated with gastroesophageal reflux disease.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"V_Why_Is_Saliva_Deficiency_Dangerous\"><\/span><span style=\"font-family: arial, helvetica, sans-serif; font-size: 18pt;\"><strong>V. Why Is Saliva Deficiency Dangerous?<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">When saliva flow decreases (below 0.2 ml\/minute):<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">The time required to clear sugars from the mouth is prolonged<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Acids remain longer<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">The risk of tooth decay increases significantly<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Additionally:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Loss of lubrication \u2192 difficulty swallowing<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Reduced enzymes \u2192 poor digestion<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Reduced immunity \u2192 increased susceptibility to infections<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">This is not merely an <strong>oral health issue<\/strong>, but a physiological functional disorder.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"VI_Saliva_%E2%80%93_A_%E2%80%9CNon-Invasive_Biological_Test%E2%80%9D\"><\/span><span style=\"font-family: arial, helvetica, sans-serif; font-size: 18pt;\"><strong>VI. Saliva \u2013 A \u201cNon-Invasive Biological Test\u201d<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">One remarkable point in modern medicine:<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Saliva can reflect the body\u2019s condition because many substances within it originate from the bloodstream:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Hormones (cortisol, testosterone\u2026)<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Drugs<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Addictive substances<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Cancer biomarkers<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Thanks to molecular biology techniques, saliva is becoming a simple, cost-effective diagnostic tool that does not require blood sampling.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"VII_Conclusion\"><\/span><span style=\"font-family: arial, helvetica, sans-serif; font-size: 18pt;\"><strong>VII. Conclusion<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Saliva is not merely an \u201caccessory\u201d part of the body.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">It is:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">A chemical buffering system<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">A local immune system<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">A mineral source that protects teeth<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Part of the digestive system<\/span><\/li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">And a window reflecting overall health<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Silently, it works continuously.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">And only when it is lacking do people realize:<\/span><br \/>\n<span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\"><strong>every seemingly simple function inside the mouth depends on it.<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 18pt;\"><strong><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/www.facebook.com\/NhaKhoaPhuongThanh\" target=\"_blank\" rel=\"noopener\"><span style=\"font-family: arial, helvetica, sans-serif;\">PHUONG THANH DENTAL CENTER<\/span><\/a><\/span><\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400; font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Sa Dec Headquarters: 483 Hung Vuong Street, Cai Son Hamlet, Sa Dec Ward, Dong Thap Province.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400; font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Hotline: 02773 95 6868<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400; font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Cao Lanh Headquarters: 783 Pham Huu Lau Street, Cao Lanh Ward, Dong Thap Province (Inside Dong Thap University Campus)<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400; font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Hotline: 02773 95 6869<\/span><\/p>\n<p style=\"text-align: right;\"><span style=\"font-size: 18pt; font-family: arial, helvetica, sans-serif;\"><em>P.T.T<\/em><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>When you experience dry mouth, difficulty swallowing, or loss of appetite, it is not merely a temporary sensation. It is a sign that the body is lacking an important factor: saliva. Few people realize that the body secretes approximately 500\u2013700 ml of saliva every day, a biological fluid that may seem simple yet participates in [&hellip;]<\/p>\n","protected":false},"featured_media":5624,"template":"","knowledge_category":[],"class_list":["post-5628","dental_knowledge","type-dental_knowledge","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/phuongthanh.vn\/en\/wp-json\/wp\/v2\/dental_knowledge\/5628","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phuongthanh.vn\/en\/wp-json\/wp\/v2\/dental_knowledge"}],"about":[{"href":"https:\/\/phuongthanh.vn\/en\/wp-json\/wp\/v2\/types\/dental_knowledge"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phuongthanh.vn\/en\/wp-json\/wp\/v2\/media\/5624"}],"wp:attachment":[{"href":"https:\/\/phuongthanh.vn\/en\/wp-json\/wp\/v2\/media?parent=5628"}],"wp:term":[{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/phuongthanh.vn\/en\/wp-json\/wp\/v2\/knowledge_category?post=5628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}