Stability of anterior open bite cases treated with upper and lower extrusion arches in adults: a follow-up study.

The Angle orthodontist Pub Date : 2023-11-01 DOI:10.2319/030623-155.1

Tasneem Hammad, Alaaeldin Elraggal, Hassan Moussa, Wessam Marzouk, Hanan Ismail

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Abstract

Objectives: To investigate the post-treatment stability of anterior open bite (AOB) cases treated with upper and lower extrusion arches in adults.

Materials and methods: 23 patients with AOB were treated with extrusion arches and evaluated for dentoskeletal changes using lateral cephalometric radiographs before treatment (T0), after treatment (T1), and 12 months post-treatment (T2). Patients received bondable tongue spurs and vacuum-formed retainers as post-treatment retention/stability measures for 12 months. Post-treatment stability was further assessed qualitatively by the Photographic Openbite Severity Index.

Results: All the cases showed positive overlap between the anterior teeth at the end of orthodontic treatment, and 20 of 23 treated patients attended the recall visit after 12 months. A total of 85% of the cases maintained positive overlap at least 1 year post-treatment, 10% showed edge-to-edge bite, and only 5% showed no overbite.

Conclusions: Treatment of AOB in adults with extrusion arches proved to be stable 1 year post-treatment. Changes in the overbite after 1 year of follow-up were not significant.

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成人上下挤压弓治疗前部开放性咬合病例的稳定性：一项随访研究。

目的：研究成人上下挤压弓治疗前部开放性咬合（AOB）患者的治疗后稳定性。材料和方法：23例AOB患者接受挤压弓治疗，并在治疗前（T0）、治疗后（T1）和治疗后12个月（T2）使用侧位头影测量片评估牙骨骼变化。患者接受可粘合的舌刺和真空形成的固位器作为治疗后的固位/稳定性措施，为期12个月。通过摄影咬合严重程度指数对治疗后的稳定性进行了进一步的定性评估。结果：所有病例在正畸治疗结束时都显示出前牙之间的正重叠，23名接受治疗的患者中有20名在12个月后参加了召回访视。共有85%的病例在治疗后至少1年保持阳性重叠，10%的病例出现边缘到边缘的咬合，只有5%的病例没有出现覆牙。结论：成人挤压足弓AOB的治疗在治疗后1年证明是稳定的。随访1年后，覆牙的变化并不显著。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The Angle orthodontist

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