Success rate of anterior open-bite orthodontic-orthognathic surgical treatment.
BACKGROUND
The aim was to evaluate the short-term success rate of combined orthodontic-orthognathic surgical correction of anterior open bite.


METHODS
Fifteen patients (ages, 15-28 years) with open bite treated with a combined orthodontic-surgical approach were examined. Lateral cephalograms from before treatment, after treatment, and after an average of 18 months (range, 10-26 months) of retention were evaluated. Overbite was classified as normal (2-3.5 mm), borderline (0-1.5 mm), or relapse (<0 mm), and overjet as normal (2-3.5 mm) or relapse (≥4 and ≤1.5 mm).


RESULTS
The average overbite was -3.2 mm before treatment, 1.8 mm after treatment, and 1.3 mm after retention. During active treatment, overbite and overjet were normalized in 53.3% and 66.7% of the subjects, respectively. After the retention period, 1 patient (6.7%) showed a negative overbite, whereas a borderline overbite was found in 53.3% of the subjects. Overjet relapsed in 40% of the subjects. Only 40% of the patients had a completely successful treatment with incisal contact and normal overjet and overbite.


CONCLUSIONS
Orthodontic-surgical treatment of anterior open bite improves the overbite, but an excellent treatment outcome with normal overjet and overbite and proper incisal contact was achieved in only 40% of the subjects.
Department of Orthodontics, University of Giessen, Germany.
Ute
U
Jensen
Sabine
S
Ruf
D000293:Adolescent; D000328:Adult; D002508:Cephalometry / Q000379:methods; D003131:Combined Modality Therapy; D003766:Dental Occlusion; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007180:Incisor / Q000473:pathology; D008297:Male; D008334:Mandible / Q000473:pathology; D008437:Maxilla / Q000473:pathology; D024343:Open Bite / Q000601:surgery / Q000628:therapy*; D016910:Orthodontic Brackets; D018704:Orthodontic Retainers; D009971:Orthodontics, Corrective / Q000379:methods*; D056948:Orthognathic Surgical Procedures / Q000379:methods*; D012008:Recurrence; D012189:Retrospective Studies; D016896:Treatment Outcome; D055815:Young Adult