What does “Functional orthodontic appliance” mean?
A functional orthodontic appliance uses jaw position and muscle activity to apply forces that affect the teeth and bite relationship.
An appliance that acts on the upper and lower dental arches
Functional appliances generally act on both dental arches and are used to improve relationships such as protruding front teeth. They come in several designs, including removable and fixed types. Their structure and action differ from those of a bracket attached to an individual tooth.
Growth stages and wearing conditions
It is mainly used during the growth period and is applied considering the growth stage and the relationship between teeth and jaw. The main action is to change the position of the teeth, such as tilting the upper front teeth back and the lower front teeth forward. Even short-term growth responses do not guarantee long-term changes in jaw position. Removable devices can be expected to function as intended only if the prescribed wearing time is observed.
When further orthodontic treatment is needed
Even after the front-to-back bite relationship improves, follow-up treatment, such as a fixed appliance, may be needed to align the teeth precisely. Keep the teeth and appliance clean, and have the appliance adjusted if it breaks or causes persistent pain in one area.
Frequently Asked Questions
Can a functional appliance complete orthodontic treatment on its own?
In some cases, a further stage using fixed appliances or another method is needed to align the teeth precisely. The full treatment sequence is planned from the start.
Do I have to wear the device while eating?
Depends on the device type. You should be instructed on the designated wearing time and meal handling instructions for your device.
Questions to help you understand functional orthodontic appliances
Learn what the term means and how it relates to your dental condition.
- Sufficient understanding
Which bite relationship is the appliance intended to improve?
Explanation and evidenceUnderstand the relationship between the upper and lower teeth and jaws, and distinguish it from the intended action of the appliance.
American Association of Orthodontists · Glossary of Orthodontic Terms - A choice suited to your condition
What are the wearing instructions and subsequent treatment steps?
Explanation and evidenceCheck the prescribed usage time, management method, and need for follow-up treatment.
British Orthodontic Society · Functional Appliances
