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In dentistry, overjet is the extent of horizontal (anterior-posterior) overlap of the maxillary central incisors over the mandibular central incisors. In class II (division I) malocclusion the overjet is increased as the maxillary central incisors are protruded.
Improve the relationship between dental arches; reduce open bite and overjet; Maintain overall facial muscle tone needed for chewing, swallowing, and speech; Create an oral environment that creates favorable conditions for the development of dentition; Eliminate dry mouth condition or xerostomia; Improve oral hygiene
When there is maxillary or alveolar prognathism which causes an alignment of the maxillary incisors significantly anterior to the lower teeth, the condition is called an overjet. When the reverse is the case, and the lower jaw extends forward beyond the upper, the condition is referred to as retrognathia (reverse overjet). [citation needed]
Overbite is often confused with overjet, which is the distance between the maxillary anterior teeth and the mandibular anterior teeth in the anterior-posterior axis. "Overbite" may also be used commonly to refer to Class II malocclusion or retrognathia, though this usage can be considered incorrect. This is where the mesiobuccal cusp of the ...
Trauma to anterior teeth: Those with an increased overjet are at an increased risk of trauma. A systematic review found that an overjet of greater than 3mm will double the risk of trauma. Masticatory function: people with anterior open bites, large increased & reverse overjet and hypodontia will find it more difficult to chew food.
Its purpose is to slow or stop the upper jaw from growing, thereby preventing or correcting an overjet. [medical citation needed] Other forms of headgear treat reverse overjets, in which the top jaw is not forward enough. It is similar to a facemask, also attached to braces, and encourages forward growth of the upper jaw. [medical citation needed]
Positive overjet and anterior open bite; Positive overjet, positive overbite, distal molar relationship and posterior crossbite with maxillary teeth buccal to mandibular teeth. Negative overjet, mesial molar relationship and posterior crossbite with maxillary teeth lingual to mandibular teeth; Congenitally missing maxillary incisors; Tooth ...
In dentistry, crossbite is a form of malocclusion where a tooth (or teeth) has a more buccal or lingual position (that is, the tooth is either closer to the cheek or to the tongue) than its corresponding antagonist tooth in the upper or lower dental arch.