弓丝更换间隔时间对使用固定矫治器治疗的正畸患者牙槽骨预期扩张的影响 :前瞻性对照临床试验。

IF 1.3 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Murilo Henrique Cruz, David Normando, Marcos Rogério de Mendonça, Eloísa Peixoto Soares Ueno, José Rino Neto, João Batista de Paiva
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引用次数: 0

摘要

目的分析更换弓丝之间的时间间隔对牙弓横向扩张量的影响。设计为前瞻性对照临床试验。通过计算机生成的分配表进行随机分配:共对 35 名患者进行了评估,分为三组,分别使用固定矫治器和相同的四根连续矫治弓丝,但更换周期不同:28 天(4 周[4W] 组)、56 天(8 周[8W] 组)和 84 天(12 周[12W] 组)。数字模型在治疗前(T0)和评估期结束时(T1)由盲人操作员使用 OrthoAnalyzer® 软件(3-Shape,丹麦哥本哈根)进行测量,并使用 MANOVA 进行比较。此外,还使用多元线性回归评估了年龄、初始牙齿拥挤、切牙倾斜度和面部形态对扩张量的影响:结果:在 12W 组中,上牙弓和下牙弓的平均扩弓量分别为 2.77 ± 0.84 毫米(上牙弓)和 3.12 ± 0.88 毫米(下牙弓);在 8W 组中,上牙弓和下牙弓的平均扩弓量分别为 1.96 ± 0.82 毫米和 2.27 ± 0.96 毫米;在 4W 组中,上牙弓和下牙弓的平均扩弓量分别为 1.11 ± 0.93 毫米和 1.32 ± 0.91 毫米。在两个牙弓的犬齿、第一前臼齿和第二前臼齿区域,各组之间的扩展量差异很大。年龄较大的患者的扩展程度较小。最初的牙齿拥挤、门牙倾斜和面部形态对牙齿扩张没有影响:结论:更换弓丝的时间间隔越长,扩弓量越大,而年龄与扩弓量成反比,年轻患者的扩弓量更大。结果还表明,固定矫治器的扩张主要表现在犬齿和前磨牙部位。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of time between archwire changes on intended dentoalveolar expansion in orthodontic patients treated with fixed appliances : A prospective controlled clinical trial.

Objective: To analyze the effects of the time span between archwire changes on the amount of transverse dental arch expansion. The design was a prospective, controlled clinical trial. Randomization was performed by computer-generated allocation tables.

Methods: In all, 35 patients were evaluated in three groups treated with fixed appliances and the same four sequential leveling archwires, however, with different replacement periods: 28 days (4-week [4W] group), 56 days (8-week [8W] group), and 84 days (12-week [12W] group). Digital models were measured before the treatment (T0) and at the end of the evaluation period (T1) by a blinded operator with OrthoAnalyzer® software (3-Shape, Copenhagen, Denmark) and compared using MANOVA. A multiple linear regression was also used to evaluate the influences of age, initial dental crowding, incisor inclination, and facial pattern on the amount of expansion.

Results: Mean expansion was 2.77 ± 0.84 mm (upper arch) and 3.12 ± 0.88 mm (lower arch) in the 12W group; 1.96 ± 0.82 mm and 2.27 ± 0.96 mm in the 8W group, and 1.11 ± 0.93 mm and 1.32 ± 0.91 mm in the 4W group, respectively for the upper and lower arches. The amount of expansion varied significantly between the groups in the area of the canines, first premolars, and second premolars for both arches. Expansion was less in older patients. Initial dental crowding, incisor inclination and facial pattern had no influence on dental expansion.

Conclusion: Longer time spans between archwire changes provided greater amounts of expansion, while age is inversely related, with younger patients expressing greater amounts of expansion. The results also suggest that the expansion provided by the fixed appliances is expressed mainly in the canine and premolar areas.

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来源期刊
CiteScore
3.90
自引率
0.00%
发文量
64
审稿时长
>12 weeks
期刊介绍: The Journal of Orofacial Orthopedics provides orthodontists and dentists who are also actively interested in orthodontics, whether in university clinics or private practice, with highly authoritative and up-to-date information based on experimental and clinical research. The journal is one of the leading publications for the promulgation of the results of original work both in the areas of scientific and clinical orthodontics and related areas. All articles undergo peer review before publication. The German Society of Orthodontics (DGKFO) also publishes in the journal important communications, statements and announcements.
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