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Class III: (Mesiocclusion (prognathism, anterior crossbite, negative overjet, underbite)) In this case the upper molars are placed not in the mesiobuccal groove but posteriorly to it. The mesiobuccal cusp of the maxillary first molar lies posteriorly to the mesiobuccal groove of the mandibular first molar.
Facemask or reverse-pull headgear is an orthodontic appliance typically used in growing patients to correct underbites (technically termed Class-III orthodontic problems) by pulling forward and assisting the growth of the upper jaw , allowing it to catch up to the size of the lower jaw . These appliances effectively serve to pull the patient's ...
An expander can be used on an adult without surgery but would be used to expand the dental arch, and not the palate. Sometimes children and teenage patients, and occasionally adults, are required to wear a headgear appliance as part of the primary treatment phase to keep certain teeth from moving (for more detail on headgear and facemask ...
Orthognathic surgery (/ ˌ ɔːr θ ə ɡ ˈ n æ θ ɪ k /), also known as corrective jaw surgery or simply jaw surgery, is surgery designed to correct conditions of the jaw and lower face related to structure, growth, airway issues including sleep apnea, TMJ disorders, malocclusion problems primarily arising from skeletal disharmonies, and other orthodontic dental bite problems that cannot ...
In general dentistry, oral and maxillofacial surgery, and orthodontics, this is assessed clinically or radiographically (cephalometrics). The word prognathism derives from Greek πρό (pro, meaning 'forward') and γνάθος (gnáthos, 'jaw').
In the case of apertognathia, and the teeth do not overlap enough or at all—the upper teeth protrude past the lower teeth. An open bite is a condition where the upper and lower teeth do not meet or bite in the correct position. Unlike an overbite or underbite, there is no overlapping of teeth, giving an impression of the teeth appearing ...
Overbites and underbites may also contribute to non lingual lisping. Temporary lisps can be caused by dental work, excess saliva, mouthguards, dental appliances such as dentures, dental braces, or retainers or by swollen or bruised tongues. [citation needed]
The Herbst appliance serves as an effective solution for correcting a class II malocclusion, where the lower jaw is positioned too far back in relation to the upper jaw. To address this misalignment, the Herbst appliance is typically affixed to the last molar on the upper teeth and the first premolar on the lower teeth.