used removable plate with palatal crib and combined it with a high-pull chin cup in 30 patients for 12 months and compared it to 30 patients who were followed with no treatment. They found that no positive skeletal influence on the vertical facial pattern of patients treated for open bite in the mixed dentition by their stated protocol. Another study stated that there is no positive effect of vertical pull chin cup in controlling the vertical facial height and that close of an anterior open bite was mostly done by dentoalveolar changes. Permanent dentition
Correction of open bite in permanent dentition may involve extrusion of the anterior teeth or intrusion of the posterior teeth. This decision depends on the incisor show on smiling for a patient. If a patient has normal incisor show at rest smile, than molar intrusion may be done in these type of faces. Extrusion of anterior teeth in these patients will lead to excessive gummy smile which in some cases is not desirable. If a patient does not have a normal incisor show at rest and smile, then anterior extrusion may be done in these patients. High-Pull Headgear
This appliance can be used with patients who are growing and in permanent dentition. This appliance has been advocated to be used mainly for controlling the vertical dimension by applying force to intrude molars. Elastics
Elastics have been used to correct anterior dental open bite. These elastics can be in configuration of triangular or anterior vertical elastics.
It is shown that as long as the sucking habit stops before the eruption of permanent teeth, the open bite self-corrects. In some cases, behavior modification may be necessary to eliminate the dental habits. If all else fails, then a tongue crib can be used. Posterior open bite
Posterior open bite is caused when posterior teeth such as molars or premolars fail to touch their counterpart tooth. This is more likely to occur in segments where there may be unilateral open bite or open bite related to one or more teeth. Failure of eruption of teeth either due to primary failure or mechanical obstruction during eruption phase can cause the open bite. Sometimes lateral tongue thrust may also prevent the eruption of the posterior teeth, thus eliminating this habit maybe key to eruption in those instances. Skeletal open bite
Patient with skeletal open bites that accompany dental open bites may have Adenoid faces or Long face syndrome.