ABSTRACT
Treatment effects of the Bionator functional appliance were studied on the pre- and post-treatment cephalograms of 49 Class II, Division 1 cases. After treatment, a significant more ventral localization of the anterior structures of the mandible was recorded in comparison with the pretreatment situation. The proclination of the maxillary incisors was reduced. No absolute inhibitory effect on maxillary growth was observed. In this study no significant differences in the measured treatment effects on cephalometric radiographs could be demonstrated in cases with a tendency to skeletal open bite from those with a tendency to skeletal deep bite according to the criteria used in this study.
Subject(s)
Activator Appliances , Cephalometry , Facial Bones/pathology , Malocclusion, Angle Class II/therapy , Tooth/pathology , Analysis of Variance , Bicuspid/surgery , Child , Discriminant Analysis , Evaluation Studies as Topic , Female , Humans , Incisor/pathology , Male , Malocclusion/classification , Malocclusion/pathology , Malocclusion/therapy , Mandible/pathology , Maxilla/growth & development , Maxilla/pathology , Serial Extraction , Vertical DimensionSubject(s)
Malocclusion/therapy , Adolescent , Child , Humans , Malocclusion/diagnosis , Malocclusion/etiologySubject(s)
Maxillofacial Development , Molar, Third/growth & development , Orthodontics, Interceptive , Adolescent , Adult , Female , Humans , Male , Molar, Third/surgery , Tooth ExtractionSubject(s)
Tooth Discoloration/epidemiology , Adolescent , Adult , Belgium , Child , Female , Humans , Male , Middle Aged , Tooth Discoloration/etiology , Tooth Discoloration/pathologySubject(s)
Malocclusion/surgery , Tooth Germ/surgery , Bicuspid/surgery , Humans , Mandible , Maxilla , Molar/surgerySubject(s)
Cephalometry/methods , Orthodontics/methods , Head/diagnostic imaging , Humans , RadiographyABSTRACT
A comparison has been made within 92 children who were either observed or treated by extractions or by orthodontic appliances and submitted to statistical analysis. Conventional treatments do not influence the skeletal structures except for the convex faces which are favorably modified by plate. The changes of the dental axis varied according to the dental group. The growth direction of the anterior facial structures seems to be constant amongst all considered children.
