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Orthodontic technology is a specialty of dental technology that is concerned with the design and fabrication of dental appliances for the treatment of malocclusions, which may be a result of tooth irregularity, disproportionate jaw relationships, or both.
There are three main types of orthodontic appliances: active, passive and functional. All these types can be fixed or removable.
Additional recommended knowledge
An active appliance is a device used to apply forces to the teeth to change the relationship of the teeth.
Removable active appliances
Fixed active appliances
Passive appliances include space maintainers and retainers
Removable passive appliances
Fixed passive appliances
Also known as dentofacial orthopaedic appliances, these appliances utilize the muscle action of the patient to produce orthodontic or orthopaedic forces. Various functional appliances have been described.
Removable functional appliances
Headgear is an orthodontic appliance for the correction of Class II correction, typically used in growing patients to correct overbites by holding back the growth of the upper jaw, allowing the lower jaw to catch up.
The headgear can also be used to make more space for teeth to come in. The headgear is then attached to the molars (via molar headgear bands & tubes), and helps to push or draw them backwards in the mouth, opening up space for the front teeth to be moved back using braces and bands.
Headgear needs to be worn approximately 12 to 22 hours a day to be truly effective in correcting the overbite, and treatment is usually anywhere from 6 to 18 months in duration, depending on the severity of the overbite and how much a patient is growing.
For more details see Orthodontic headgear, for more details
Facemask or Reverse-pull Headgear is an orthodontic appliance typically used in growing patients to correct under bites (known as a Class III orthodontic problem) by pulling forward and assisting the growth of the upper jaw, allowing the upper jaw to catch up.
Facemasks or Reverse-pull Headgear needs to be worn approximately 12 to 22 hrs to be truly effective in correcting the under bite, usually anywhere from 6 to 18 months depending on the severity of the bite and how much a patient is growing.
The appliance normally consists of a frame or a centre bars that are strapped to the patients head during a fitting appointment. The frame has a section which is positioned in-front of the patients mouth, which allows for the attachment of elastic or rubber bands directly into the mouth area. These elastics are then hooked onto the child's braces (brackets and bands) or appliance fitted in his or her mouth.
This creates a forward 'pulling' force to pull the upper jaw forward. For more details see Orthodontic Facemask & Reverse-Pull Headgear.
Fixed functional appliances
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Orthodontic_technology". A list of authors is available in Wikipedia.|