title: Incisal changes and orthodontic stability.
abstract: Lateral cephalograms and study casts of 55 patients were evaluated to determine if any relationships exist among incisal positions and angulations, changes in positions and angulations, and long-term occlusal stability. No significant relationships could be found between long-term changes occurring in a number of commonly used incisal measurements and end-of-treatment incisal positions, changes in incisal positions during treatment, or long-term changes in the facial axis angle, ANB angle, or weighted PAR score. Long-term incisal changes occurring in individual patients were not necessarily associated with negative occlusal changes. Since incisal positions usually change in the long-term, it is suggested that the use of published norms or recommended absolute goals for end-of-treatment incisal positions be used more as general functional and esthetic clinical guides, rather than as predictors of stability.
authors.affiliation: Orthodontic Unit, School of Dental Science, The University of Melbourne, Victoria, Australia.
authors.forename: G J
authors.initials: GJ
authors.lastname: Lenz
authors.forename: M G
authors.initials: MG
authors.lastname: Woods
mesh_terms: D000293:Adolescent; D002508:Cephalometry; D003766:Dental Occlusion; D004955:Esthetics, Dental; D005145:Face; D005260:Female; D005500:Follow-Up Studies; D005544:Forecasting; D006801:Humans; D007180:Incisor / Q000473:pathology*; D008137:Longitudinal Studies; D008297:Male; D008310:Malocclusion / Q000473:pathology / Q000628:therapy; D008437:Maxilla / Q000473:pathology; D003765:Models, Dental; D009666:Nose / Q000473:pathology; D009967:Orthodontic Appliances; D012008:Recurrence; D012658:Sella Turcica / Q000473:pathology; D014087:Tooth Movement Techniques