title: [Work problems with the direct headgear system].
mesh_terms: D000293:Adolescent; D002648:Child; D005115:Extraoral Traction Appliances; D005260:Female; D006801:Humans; D008297:Male; D009968:Orthodontic Appliances, Removable
vernacular_title: Probleme beim Arbeiten mit dem direkten Headgear-System.