使用锥形束计算机断层扫描对双颌前突成人患者进行微型螺钉支撑整体牵引后的气道形态进行三维评估：单臂临床试验

IF 1.8 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

International Orthodontics Pub Date : 2024-10-29 DOI:10.1016/j.ortho.2024.100936

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引用次数: 0

摘要

材料和方法21名受试者（平均年龄为23.8 ± 4.6岁）参加了这项研究，他们需要拔除四颗第一前磨牙，并使用最大锚定法对前牙前段进行整体牵引，平均治疗时间为19.9个月。CBCT 扫描分别在治疗前（前）和整体牵引后（后）进行。气道容积通过 Relu 软件进行测量。使用 Romexis 1 软件对治疗前和治疗后的 CBCT 扫描进行叠加。测量硬腭、软腭和会厌水平的横截面积（CSA）。记录最大收缩面积（MCA）。通过 5 次线性测量评估舌骨位置。测量牵拉前后上下切牙与法兰克福水平面（FH）的角度。采用配对 t 检验分析测量结果，并使用斯皮尔曼秩相关系数 (rs) 进行相关性分析。结果21 名参与者（16 名女性，5 名男性）符合纳入标准并参加了分析。治疗前和整体牵拉后，气道容积、横截面积和舌骨位置均无明显差异（P >0.05）。治疗后门牙明显后缩（P< 0.001）。最大收缩面积的变化与气道容积的变化（rs = 0.509*）和软腭面积的变化（rs = 0.653*）呈显著正相关。

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Three-dimensional evaluation of the airway morphology after miniscrew-supported en masse retraction in adult bimaxillary protrusion patients by using cone beam computed tomography: A single-arm clinical trial

Objective

This study aimed to assess the changes in the pharyngeal airway morphology after premolar extraction and maximum anchorage retraction of the anterior segments in adult bimaxillary protrusion patients by using CBCT.

Material and methods

Twenty-one subjects (mean age 23.8 ± 4.6 years) requiring extraction of four first premolars and en masse retraction of the anterior segments using maximum anchorage participated in the study from July 2022 to May 2024 with an average treatment duration of 19.9 months. CBCT scans were taken before treatment (pre) and after en masse retraction (post). Airway volume was measured by using Relu software. The pre- and post-CBCT scans were superimposed by using Romexis 1 software. The cross-sectional area (CSA) was measured at the level of the hard palate, soft palate, and epiglottis. The most constricted area (MCA) was recorded. The hyoid bone position was evaluated by using 5 linear measurements. The upper and lower incisor angulations to the Frankfort horizontal plane (FH) were measured before and after retraction. Paired t-test was used to analyse the measurements and correlation analyses were made using Spearman's rank-order correlation coefficient (rs). The significance level was set at P < 0.05 within all tests.

Results

Twenty-one participants (16 females, 5 males) followed the inclusion criteria and enrolled in the analysis. There were no significant differences in airway volume, cross-sectional areas, or hyoid bone position between before treatment and after en masse retraction (P > 0.05). There was a significant retraction of the incisors after treatment (P < 0.001). The change in the most constricted area had a large positive correlation with the change in the airway volume (rs = 0.509*) and the area of the soft palate (rs = 0.653*).

Conclusion

Maximum anchorage retraction had no significant effect on airway volume, cross-sectional area, or hyoid bone position.

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来源期刊

International Orthodontics DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

2.50

自引率

13.30%

发文量

审稿时长

26 days

期刊介绍： Une revue de référence dans le domaine de orthodontie et des disciplines frontières Your reference in dentofacial orthopedics International Orthodontics adresse aux orthodontistes, aux dentistes, aux stomatologistes, aux chirurgiens maxillo-faciaux et aux plasticiens de la face, ainsi quà leurs assistant(e)s. International Orthodontics is addressed to orthodontists, dentists, stomatologists, maxillofacial surgeons and facial plastic surgeons, as well as their assistants.