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  • Title: Success rate of anterior open-bite orthodontic-orthognathic surgical treatment.
    Author: Jensen U, Ruf S.
    Journal: Am J Orthod Dentofacial Orthop; 2010 Dec; 138(6):716-9. PubMed ID: 21130329.
    Abstract:
    INTRODUCTION: 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.
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