title: [The importance of measuring devices for the estimation of the period of time of application of orthodontic appliances].
mesh_terms: D002648:Child; D006801:Humans; D009967:Orthodontic Appliances; D009971:Orthodontics, Corrective; D013997:Time Factors
vernacular_title: Die Bedeutung von Prüfkörpern zur Beurteilung der Anwendungszeit kieferorthopädischer Apparate