title: [Effect of headgear activator treatment and of mandibular advancement osteotomy on profile convexity].
abstract: A first group of 19 class II1 patients (mean age 11 years) was treated with a headgear activator. X-rays were taken before and after treatment and again 4 years after treatment was completed. A second group of 26 class II1 patients (mean age 21 years) was treated with an advancement osteotomy of the mandible (BSO). X-rays were taken just before and 6 months after surgery. The dento-alveolar compensation (mainly retrusion of the upper incisors) was greater for the activator-group. The convexity of the hard and soft tissues improved in a comparable way for both groups of patients. Only a small part of the correction obtained with the headgear activator relapsed 4 years after treatment.
authors.affiliation: Ecole de Médecine Dentaire et de Stomatologie, Bruxelles.
authors.forename: H
authors.initials: H
authors.lastname: De Clerck
authors.forename: H
authors.initials: H
authors.lastname: Timmerman
mesh_terms: D000202:Activator Appliances; D000328:Adult; D002508:Cephalometry / Q000379:methods; D002648:Child; D005147:Facial Bones / Q000000981:diagnostic imaging; D006801:Humans; D008312:Malocclusion, Angle Class II / Q000534:rehabilitation*; D008334:Mandible / Q000601:surgery*; D010027:Osteotomy / Q000379:methods*; D011859:Radiography
vernacular_title: Influence d'un traitement par activateur de type headgear et d'une ostéotomie d'avancée mandibulaire sur la convexité du profil.