Retainers, Dental, Orthodontic, Removable
Definition : Orthodontic retainers that can be easily removed by the user, designed to hold teeth in place during the period of functional adaptation while surrounding gingival tissue (i.e., gums) and bone adjust to a new position following corrective orthodontic treatment. These retainers may consist of metallic wires that surround the teeth and are attached (i.e., anchored) to molded resin (e.g., acrylic) plates shaped to fit either on the mouth palate or floor (Hawley retainers). Clear or transparent molded resin retainers (e.g., Essix retainers) that fit over the entire arch of teeth and do not allow the upper and lower teeth to touch because plastic covers the chewing surfaces of the teeth are also used. Removable orthodontic retainers are typically used several hours a day (e.g., during the night) for a period of several months or a few years to prevent reversal of substantial modifications in tooth position (e.g., great modifications in bite) gained by orthodontic procedures.
Entry Terms : "Orthodontic Retainers, Removable"
UMDC code : 23643