title: Spontaneous changes in molar occlusion after extraction of all first premolars: a study of Class II division 1 cases treated with removable appliances.
mesh_terms: D006801:Humans; D008310:Malocclusion / Q000628:therapy*; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D008963:Molar; D009968:Orthodontic Appliances, Removable; D012690:Serial Extraction / Q000009:adverse effects*