Adjuncts and Accessory Appliances
These next appliances help with movements the brackets alone can’t accomplish. These tend to be more case specific and are used in conjunction, or at the same time, as the braces. They may be found in the roof of the mouth as in the case of an expander, habit appliance, or bite plate, OR, they may be external to the mouth as in the case of the headgear or the facemask. They may be utilized for certain types of tooth movement or for growth modification where applicable in a growing child.
These appliances include an upper nance or a lower lingual holding arch. They are generally used to maintain space when baby teeth are lost early and an adult tooth needs the room to come in. In these situations, if the space is not maintained, the molars will drift into the space left by the missing tooth and block the permanent tooth from eruption.
We may use them between a phase I and a phase II treatment to maintain space we’ve created for the permanent teeth.
Retainers can also serve as space maintainers.