title: Orthodontics in 3 millennia. Chapter 6: More early 20th-century appliances and the extraction controversy.
abstract: The trying conditions of the Great Depression and World War II did not deter innovative orthodontists from adding 3 new appliances to our armamentarium. Clinicians become fragmented into various technique "camps." Silas Kloehn's neck gear became a more patient-friendly version of extraoral anchorage, but it still had drawbacks. Angle's stranglehold on the specialty was finally broken when 3 of his disciples made extractions respectable.
authors.affiliation: normwahl@olypen.com
authors.forename: Norman
authors.initials: N
authors.lastname: Wahl
mesh_terms: D000180:Acrylic Resins / Q000266:history; D001315:Australia; D005858:Germany; D049673:History, 20th Century; D009967:Orthodontic Appliances / Q000266:history*; D009971:Orthodontics, Corrective / Q000266:history* / Q000379:methods; D013548:Sweden; D014081:Tooth Extraction / Q000266:history*; D014481:United States
chemical_list: D000180:Acrylic Resins