title: The depth of the mandibular antegonial notch as an indicator of mandibular growth potential.
abstract: The craniofacial characteristics and growth potential of 25 orthodontically treated patients with deep mandibular antegonial notch were compared with a similar group of 25 shallow notch subjects by the use of longitudinal lateral cephalometric radiographs. Deep notch cases had more retrusive mandibles with a shorter corpus, smaller ramus height, and a greater gonial angle than did shallow notch cases. The lower facial height in the subjects with a deep mandibular notch was found to be longer, and both the mandibular plane angle and facial axis were more vertically directed. During the average 4-year period examined, the deep notch sample experienced less mandibular growth as evidenced by a smaller increase in total mandibular length, corpus length, and less displacement of the chin in a horizontal direction than did the shallow notch sample. The results of this study suggest that the clinical presence of a deep mandibular antegonial notch is indicative of a diminished mandibular growth potential and a vertically directed mandibular growth pattern.
authors.forename: C P
authors.initials: CP
authors.lastname: Singer
authors.forename: A H
authors.initials: AH
authors.lastname: Mamandras
authors.forename: W S
authors.initials: WS
authors.lastname: Hunter
mesh_terms: D000293:Adolescent; D002508:Cephalometry; D002648:Child; D005260:Female; D005544:Forecasting; D006801:Humans; D008297:Male; D008334:Mandible / Q000033:anatomy & histology* / Q000254:growth & development; D008437:Maxilla / Q000033:anatomy & histology; D009971:Orthodontics, Corrective; D012886:Skull / Q000033:anatomy & histology