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Wendl, B; Muchitsch, AP; Winsauer, H; Walter, A; Droschl, H; Jakse, N; Wendl, M; Wendl, T.
Retrospective 25-year follow-up of treatment outcomes in angle Class III patients : Early versus late treatment.
J Orofac Orthop. 2017; 78(3):201-210 Doi: 10.1007/s00056-016-0076-7 [OPEN ACCESS]
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Führende Autor*innen der Med Uni Graz
Wendl Brigitte
Co-Autor*innen der Med Uni Graz
Droschl Helmut
Jakse Norbert
Muchitsch Alfred Peter

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To assess early versus late treatment of Class III syndrome for skeletal and dental differences. Thirty-eight Class III patients treated with a chincup were retrospectively analyzed. Baseline data were obtained by reviewing pretreatment (T0) anamnestic records, cephalograms, and casts. The cases were assigned to an early or a late treatment group based on age at T0 (up to 9 years or older than 9 years but before the pubertal growth spurt). Both groups were further compared based on posttreatment data (T1) and long-term follow-up data collected approximately 25 years after treatment (T2). Early treatment was successful in 74% and late treatment in 67% of cases. More failures were noted among male patients. The late treatment group was characterized post therapeutically by significantly more pronounced skeletal parameters of jaw size relative to normal Class I values; in addition, a greater skeletal discrepancy between maxilla and mandible, higher values for mandibular length, Cond-Pog, ramus height, overjet, anterior posterior dysplasia indicator (APDI), lower anterior face height, and gonial angle were measured at T1. The angle between the AB line and mandibular plane was found to be larger at T0, T1, and T2, as well as more pronounced camouflage positions of the lower anterior teeth at T0. The early treatment group was found to exhibit greater amounts of negative overjet at T0 but more effective correction at T1. Early treatment of Class III syndrome resulted in greater skeletal changes with less dental compensation.
Find related publications in this database (using NLM MeSH Indexing)
Austria - epidemiology
Child -
Child, Preschool -
Extraoral Traction Appliances - statistics & numerical data
Female -
Humans -
Longitudinal Studies -
Male -
Malocclusion, Angle Class III - diagnosis
Malocclusion, Angle Class III - epidemiology
Malocclusion, Angle Class III - therapy
Orthodontics, Corrective - instrumentation
Orthodontics, Corrective - statistics & numerical data
Prevalence -
Retrospective Studies -
Secondary Prevention - statistics & numerical data
Sex Distribution -
Time-to-Treatment - statistics & numerical data
Treatment Outcome -

Find related publications in this database (Keywords)
Class III treatment
Early treatment
Late treatment
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