{"id":18168,"date":"2022-11-01T09:42:25","date_gmt":"2022-11-01T09:42:25","guid":{"rendered":"https:\/\/nutrident.fr\/?page_id=18168"},"modified":"2022-11-03T12:26:40","modified_gmt":"2022-11-03T12:26:40","slug":"underbite","status":"publish","type":"page","link":"https:\/\/nutrident.fr\/en\/underbite\/","title":{"rendered":"Underbite: definition, causes and treatments"},"content":{"rendered":"<div class=\"meta\"><div class=\"meta__users\"><\/div><div class=\"meta__date-modified\">Updated:&nbsp;<span>November 3, 2022<\/span><\/div><\/div><div class=\"wp-block-image\">\n<figure class=\"alignright size-full\"><img width=\"295\" height=\"183\" src=\"https:\/\/nutrident.fr\/wp-content\/uploads\/2022\/09\/prognathe.jpg\" alt=\"prognathia in a child\" class=\"wp-image-15604\" srcset=\"https:\/\/nutrident.fr\/wp-content\/uploads\/2022\/09\/prognathe.jpg 295w, https:\/\/nutrident.fr\/wp-content\/uploads\/2022\/09\/prognathe-254x158.jpg 254w\" sizes=\"(max-width: 295px) 100vw, 295px\" \/><figcaption>Prognathia corresponds to an excessive advancement of the lower jaw in relation to the upper jaw.  <\/figcaption><\/figure><\/div>\n\n\n<p><strong>Underbite (forward jaw) is a common case of malocclusion.<\/strong><\/p>\n\n\n\n<p>If, at first sight, the problem is mainly aesthetic, the <strong>prognathia <\/strong>also causes <strong>dysfunctions <\/strong>that affect breathing, eating (and therefore digestion) and pronunciation. What treatments are available to correct this malposition?<\/p>\n\n\n\n<p><a href=\"https:\/\/nutrident.fr\/en\/\">Nutrident<\/a> reviews the <strong>causes of prognathia, as well as the orthodontic and surgical solutions <\/strong>that can rectify this malformation<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_33_2 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Contenus<\/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\" style=\"display: none;\"><label for=\"item\" aria-label=\"Table of Content\"><i class=\"ez-toc-glyphicon ez-toc-icon-toggle\"><\/i><\/label><input type=\"checkbox\" id=\"item\"><\/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:\/\/nutrident.fr\/en\/underbite\/#What_is_prognathia\" title=\"What is prognathia?  \">What is prognathia?  <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/nutrident.fr\/en\/underbite\/#Consequences_of_prognathia\" title=\"Consequences of prognathia  \">Consequences of prognathia  <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/nutrident.fr\/en\/underbite\/#What_are_the_solutions_to_rectify_prognathia\" title=\"What are the solutions to rectify prognathia?  \">What are the solutions to rectify prognathia?  <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/nutrident.fr\/en\/underbite\/#FAQ\" title=\"FAQ\">FAQ<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_is_prognathia\"><\/span>What is prognathia?  <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Not to be confused with <a href=\"https:\/\/nutrident.fr\/en\/?page_id=17989\" data-type=\"URL\" data-id=\"https:\/\/nutrident.fr\/dents-en-avant\/\">retrognathia<\/a>, prognathism is a frequent case of <strong>dental malocclusion<\/strong> (misalignment of the teeth). It is characterized by a too advanced position of the mandible in relation to the jawbone. Therefore, one of the two jaws is more advanced than the other.<\/p>\n\n\n\n<h3>Three types of prognathia<\/h3>\n\n\n\n<p>This orthodontic disorder is also called the &#8220;chin forward phenomenon&#8221;. We distinguish three types:<\/p>\n\n\n\n<ul><li><strong>Underbite mandible<\/strong>: mandible too prominent<\/li><li><strong>Underbite jaw<\/strong>: overly prominent jawbone<\/li><li><strong>Bimaxillary prognathism<\/strong>: both jaws are too prominent<\/li><\/ul>\n\n\n\n<h3>Causes of undershot chin<\/h3>\n\n\n\n<p>The prognathia has two origins. It may come from your inherited <a class=\"wpil_keyword_link\" title=\"genetic\" href=\"https:\/\/nutrident.fr\/en\/?page_id=18111\">genetic<\/a> makeup. It may otherwise be related to certain behaviors, most often at the time of mouth and teeth formation, for example, thumb sucking in children.<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Consequences_of_prognathia\"><\/span>Consequences of prognathia  <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Like any dental malocclusion, the <strong>prognathic jaw<\/strong> has physical and psychological repercussions:<\/p>\n\n\n\n<ul><li>Cosmetic discomfort;<\/li><li>Chewing problems;<\/li><li>Pronunciation Defects;<\/li><li>Malposition for caries;<\/li><li>Joint pain.<\/li><\/ul>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"What_are_the_solutions_to_rectify_prognathia\"><\/span>What are the solutions to rectify prognathia?  <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Depending on the age and the progress of the prognathia, two types of treatment are possible: <strong>orthodontics <\/strong>and\/or<strong> surgery<\/strong>.<\/p>\n\n\n\n<p>It is important to know that a single orthodontic treatment may not be sufficient if the prognathic problem has been present for a long time. Therefore, a surgical intervention is also recommended. Moreover, a <strong>skeletal origin of the pathology <\/strong>obliges, in the majority of the cases, to resort to surgery.<\/p>\n\n\n\n<h3>The orthodontic solution<\/h3>\n\n\n\n<p>If the prognathia is detected at an age when the mouth is still forming (during childhood), <strong>orthodontic treatment is very effective<\/strong>. In a context of developing teeth, wearing braces easily prevents the lower jaw from advancing, while easily stimulating the progression of the upper jaw.<\/p>\n\n\n\n<p>If prognathia runs in your family, consider telling your <strong>dentist<\/strong> about it so that he or she is aware of it when examining your child. <strong>The earlier the condition is detected, the easier it is to correct<\/strong>.<\/p>\n\n\n\n<h4>Orthodontic solutions for adults  <\/h4>\n\n\n\n<p>In adulthood, <a href=\"https:\/\/nutrident.fr\/en\/orthodontics\/braces\/\" data-type=\"URL\" data-id=\"https:\/\/nutrident.fr\/orthodontie-appareil-dentaire-adulte\/\">orthodontics <\/a>can also help correct this mandibular malposition. However, as mentioned above, the corrections are much less obvious, requiring a surgical intervention later on.<\/p>\n\n\n\n<p>Wearing a dental prosthesis allows the upper incisors to be repositioned until they are in contact with the lower incisors in the case of a <strong>maxillary prognathia<\/strong> for example.<\/p>\n\n\n\n<p>In the case of<strong>a mandibular prognathia<\/strong>, the maxillary incisors are put under pressure so that they are placed in front of the mandibular incisors.<\/p>\n\n\n\n<p>To do this, we recommend that you turn to invisible orthodontic methods, which guarantee efficiency and discretion. And why not choose Dr Smile's clear aligners? The treatment of German origin has been a huge success in France.  <\/p>\n\n\n\n<p>Before contacting a <strong>certified dentist<\/strong>, first check if the method is suitable for you. You can do this by clicking on the button below.<\/p>\n\n\n\n<h3>Mandibular surgery<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright\"><img width=\"300\" height=\"200\" src=\"https:\/\/nutrident.fr\/wp-content\/uploads\/2020\/11\/artur-tumasjan-qLzWvcQq-V8-unsplash-300x200.jpg\" alt=\"causes of prognathia\" class=\"wp-image-7014\" srcset=\"https:\/\/nutrident.fr\/wp-content\/uploads\/2020\/11\/artur-tumasjan-qLzWvcQq-V8-unsplash-300x200.jpg 300w, https:\/\/nutrident.fr\/wp-content\/uploads\/2020\/11\/artur-tumasjan-qLzWvcQq-V8-unsplash-480x320.jpg 480w, https:\/\/nutrident.fr\/wp-content\/uploads\/2020\/11\/artur-tumasjan-qLzWvcQq-V8-unsplash.jpg 750w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption>Mandibular surgery is the ultimate solution to realign the jaws.  <\/figcaption><\/figure><\/div>\n\n\n<p>If orthodontics does not work or if you started your treatment too late, only mandibular surgery will do. <strong>This is a major operation that can take up to two hours and is performed under general anesthesia<\/strong>. However, it has the advantage of obtaining resounding results<\/p>\n\n\n\n<h4>Course of the intervention<\/h4>\n\n\n\n<p><strong>The dentist cuts the mandible bone<\/strong> on both sides to separate it. He saws off part of the bone, before repositioning the mandible and fixing it with titanium plates. The openings are sutured with absorbable sutures.<\/p>\n\n\n\n<h4>Post-operative context<\/h4>\n\n\n\n<p>The patient may stay <strong>in the hospital <\/strong>for up to <strong>three days <\/strong>and will be on fluid only for several days. It is of course closely monitored by the <strong>dental surgeon<\/strong> who ensures that no infection can occur. In case of pain or inflammation, the latter prescribes the appropriate treatment.<\/p>\n\n\n\n<p>During the months following the operation, the patient must undergo <strong>orthodontic treatment<\/strong> to permanently set both jaws. This can take between one and two years.<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3>How do I know if I need to have a prognathic surgery?  <\/h3>\n\n\n\n<p>Beyond the physical complexes, if your prognathia causes difficulties in chewing food, an operation could be an interesting solution.  <\/p>\n\n\n\n<h3>What is the difference between prognathia and retrognathia?  <\/h3>\n\n\n\n<p>When the chin is backward and receding, the upper teeth are too far forward and the lower jaw is too far back, we speak of retrognathia. Conversely, when the mandible is advanced in relation to the upper jaw, we speak of prognathia.  <\/p>\n<div class=\"article-data before-content\"><div class=\"article-data__date\"><div class=\"article-data__date-modified\"><time class=\"published\" datetime=\"2022-11-01T09:42:25+00:00\">This article was originally published on&nbsp;<span class=\"2\">November 1, 2022<\/span>&nbsp;and was most recently updated on&nbsp;<span>November 3, 2022<\/span><\/time><br><\/div><\/div><\/div><div class=\"user-info\"><\/div><!--copyscapeskip--><div class=\"medical_references\"><div class=\"medical_references__heading\"><span>Medical Sources<\/span><\/div><div class=\"medical_references__list\"><p><strong>Florie Duranteau<\/strong>, <cite class=\"italique\">Les dents de l'Homme, de la Pr\u00e9histoire \u00e0 l'\u00e8re moderne<\/cite>, \u00c9ditions L'Harmattan, <time>2011<\/time>.<\/p>\n<p><strong>Odontological Society of Paris.<\/strong> <a href=\"https:\/\/www.sop.asso.fr\/les-journees\/comptes-rendus\/43-13e-journees-de-chirurgie-dentaire-a-l-ile-maurice\/5\">Orthognathic surgery: from the indispensable to the superfluous<\/a>.<\/p>\n<p><strong>University of Toulouse III.<\/strong> Souhair El Salti. <a href=\"http:\/\/thesesante.ups-tlse.fr\/415\/1\/2014TOU33016.pdf\">The contribution of genetics in orthodontics<\/a>. Thesis: dental surgery. 2014.<\/p>\n<\/div><\/div><!--\/copyscapeskip-->","protected":false},"excerpt":{"rendered":"<p>Updated:&nbsp;November 3, 2022 Underbite (forward jaw) is a common case of malocclusion. If, at first sight, the problem is mainly aesthetic, the prognathia also causes dysfunctions that affect breathing, eating (and therefore digestion) and pronunciation. What treatments are available to correct this malposition? Nutrident reviews the causes of prognathia, as well as the orthodontic and [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":18169,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"inline_featured_image":false},"acf":[],"_links":{"self":[{"href":"https:\/\/nutrident.fr\/en\/wp-json\/wp\/v2\/pages\/18168"}],"collection":[{"href":"https:\/\/nutrident.fr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/nutrident.fr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/nutrident.fr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nutrident.fr\/en\/wp-json\/wp\/v2\/comments?post=18168"}],"version-history":[{"count":4,"href":"https:\/\/nutrident.fr\/en\/wp-json\/wp\/v2\/pages\/18168\/revisions"}],"predecessor-version":[{"id":18992,"href":"https:\/\/nutrident.fr\/en\/wp-json\/wp\/v2\/pages\/18168\/revisions\/18992"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nutrident.fr\/en\/wp-json\/wp\/v2\/media\/18169"}],"wp:attachment":[{"href":"https:\/\/nutrident.fr\/en\/wp-json\/wp\/v2\/media?parent=18168"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}