title: [The distal active concept applied to the mixed dentition: a comparative study].
abstract: The "Distal Active Concept" (DAC) therapy used during the mixed dentition period shows a mandibular growth of 7.6 mm whereas the same treatment applied on the permanent dentition only shows a mandibular growth of 3.9 mm. This difference is highly significant. The DAC therapy is prescribed to a group of 30 nine years old patients with a mixed dentition for six months. The DAC therapy is prescribed to a group of 34 twelve years old patients with a permanent dentition for 24 months. As the mandibular answer to treatment seems to be more effective at the age of 9 than later, during the prepubertal period, the DAC therapy appears to be of interest and an alternative to activator treatments. Our results show the efficiency of a first stage treatment, for all the patients showing a significant class II malocclusion.
authors.affiliation: Département d'Orthopédie Dento-Faciale, Faculté d'Odontologie, Rue Guillaume Paradin, 69372 Lyon cédex 08.
authors.forename: J J
authors.initials: JJ
authors.lastname: Aknin
authors.forename: S
authors.initials: S
authors.lastname: Gebeile
mesh_terms: D002508:Cephalometry; D002648:Child; D003818:Dentition, Mixed; D019229:Dentition, Permanent; D005260:Female; D006801:Humans; D008297:Male; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D008445:Maxillofacial Development; D017289:Orthodontic Appliances, Functional; D009971:Orthodontics, Corrective / Q000295:instrumentation / Q000379:methods*; D016896:Treatment Outcome