title: Removable plastic Herbst retainer.
mesh_terms: D000202:Activator Appliances; D004867:Equipment Design; D006801:Humans; D008312:Malocclusion, Angle Class II / Q000628:therapy; D009968:Orthodontic Appliances, Removable; D010969:Plastics; D012008:Recurrence
chemical_list: D010969:Plastics