Hawley retainer

Hawley retainer /hô′lē/ [C.A. Hawley, American dentist, early 20th century] , an orthodontic appliance consisting of a removable labial wire and an acrylic biteplate resting against the palate, used to stabilize teeth after their movement or as a basis for tooth movement by providing anchorage for other attachments. Also called Hawley appliance.

Examples of Hawley retainers (Bird and Robinson, 2015)