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Functional appliances (p.e. removable appliances)

They are removable or fixed appliances that can be used for the correction of skeletal problems when the orthodontist wants to achieve guidance, stimulation or arrest of the development of the jaws. They are used on young children,
but mostly in the prepubertal and pubertal period. The removable functional appliances are mostly used during the night and some hours during the day, while the fixed one's cannot be removed.

The advantages of the removable appliances are that they can be cleaned more easily and can be removed for the meals. Nonetheless, on noncooperative patients the fact that they can be removed at will can constitute a disadvantage.