The lower buccal sagittal appliance.
Beistle
R T
RT
D006801:Humans; D008310:Malocclusion / Q000628:therapy*; D008311:Malocclusion, Angle Class I / Q000628:therapy*; D008313:Malocclusion, Angle Class III / Q000628:therapy*; D009967:Orthodontic Appliances; D009971:Orthodontics, Corrective