The Stability of Anterior Open Bite Closure After Bimaxillary Osteotomy.

Autor: Ellabban I; Oral and Maxillofacial Surgery Department, North Cumbria Integrated Care NHS Trust, Cumberland Infirmary, Newton Street, Carlisle, Cumbria CA2 7HY UK., Germain S; Orthodontic Department, North Cumbria Integrated Care NHS Trust, Cumberland Infirmary, Newton Street, Carlisle, UK., Jenkins G; Oral and Maxillofacial Surgery Department, Newcastle upon Tyne NHS Trust, Newcastle upon Tyne, UK., Paterson A; Oral and Maxillofacial Surgery Department, North Cumbria Integrated Care NHS trust, Carlisle, UK.
Jazyk: angličtina
Zdroj: Journal of maxillofacial and oral surgery [J Maxillofac Oral Surg] 2023 Dec; Vol. 22 (4), pp. 893-899. Date of Electronic Publication: 2021 Sep 16.
DOI: 10.1007/s12663-021-01642-w
Abstrakt: Introduction: The aim of this study was to evaluate the long-term success rate of combined surgical-orthodontic therapy of skeletal anterior open bite.
Materials and Methods: A total of 11 patients with an anterior open bite treated with a combined surgical-orthodontic therapy were retrospectively analysed via lateral cephalometric radiographs and models before treatment, 7-10 days after surgery (T1), one year post-operatively (T2) and two years post-operatively (T3).
Results: Ten patients continued to experience a positive overbite at T2. This decreased to 8 at T3. Three patients experienced relapse and had a negative overbite at T3. The average pre-treatment overbite was greater in the positive overbite group compared to the relapse group. Spearman's correlation analysis revealed a correlation between preoperative maxilla-mandibular plane angle (MMPA) with the overall change in overbite. Friedman's test followed by Bonferroni post-hoc analysis was carried out to identify any statistical significance.
Conclusion: In conclusion, combined surgical-orthodontic treatment achieves good results for anterior open bite. Patients with a high pre-operative MMPA have a higher risk of relapse. Lower anterior facial height ratio to total anterior facial height (LAFH/TAFH) and the amount of impaction do not significantly contribute to the risk of relapse. Long-term stability of overbite for anterior open bite patients should be around 75%.
Competing Interests: Conflict of interestNo conflict of interest related to this study.
(© The Association of Oral and Maxillofacial Surgeons of India 2021.)
Databáze: MEDLINE
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