Three-Dimensional Comparative Analysis of Root Parallelism in First Premolar Extraction Cases: Clear Aligner Versus Fixed Orthodontic Appliance

IF 2.4 3区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Orthodontics & Craniofacial Research Pub Date : 2024-11-27 DOI:10.1111/ocr.12874

Waseem S. Al-Gumaei, Fan Jian, Xiaoqi Zhang, Yufei Tang, Yi Yang, Haoxin Zhang, Wenli Lai, Hu Long

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引用次数: 0

Abstract

Objective

To compare the three-dimensional root parallelism (mesiodistally and buccolingually) between orthodontic therapy with the Invisalign clear aligners (CA) and fixed appliances (FA) among the first premolar-extraction patients, using cone-beam computed tomography (CBCT).

Materials and Methods

Sixty participants with similar American Board of Orthodontics discrepancy index scores as baseline characteristics were included and divided into CA and FA groups (30 per group). Post-treatment mesiodistal and buccolingual root parallelisms were analysed through CBCT using Invivo 6.0.3 software. Descriptive and analytical statistics were performed with a p < 0.05, considered statistically significant.

Results

Mesiodistal dental root parallelism in the U1-U2 and L1-L2 pairings between CA and FA groups were found to be significantly different with inferior parallelism in the CA group (p < 0.05). Conversely, the U3-U5 and L5-L6 pairings exhibited superior parallelism in the CA group (p < 0.05). However, other pairings, including U1-U1, U2-U3, U5-U6, U6-U7, L1-L1, L2-L3, L3-L5, and L6-L7, showed no significant differences in mesiodistal parallelism between groups (p > 0.05). Regarding the buccolingual dental root parallelism, significant differences were also noted in the U5-U6 and L5-L6 pairings with superior parallelism in the CA group (p < 0.05). However, in the U1-U1, U2-U3, U3-U5, U6-U7, L1-L1, L2-L3, L3-L5, and L6-L7 pairings, no significant differences in buccolingual parallelism were observed (p > 0.05).

Conclusion

In this study, our findings indicate that in cases involving the extraction of first premolars, Invisalign clear aligners may offer comparable or even superior three-dimensional root parallelism compared to fixed orthodontic appliances, with the exception of the mesiodistal dimension in upper and lower incisors, where their performance is less effective.

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第一前磨牙拔除病例牙根平行度的三维比较分析：透明矫治器与固定矫治器的比较。

目的使用锥形束计算机断层扫描（CBCT），比较第一前磨牙拔除患者使用隐适美透明矫治器（CA）和固定矫治器（FA）进行正畸治疗时牙根的三维平行度（牙体间和颊舌侧）：将基线特征与美国正畸委员会差异指数评分相似的 60 名参与者分为 CA 组和 FA 组（每组 30 人）。使用 Invivo 6.0.3 软件通过 CBCT 分析治疗后的牙间和颊舌根平行度。用 p 结果进行描述性和分析性统计：发现 CA 组和 FA 组 U1-U2 和 L1-L2 配对的中轴牙根平行度有显著差异，CA 组的平行度较差（P 0.05）。在颊舌侧牙根平行度方面，CA 组在 U5-U6 和 L5-L6 配对方面也存在显著差异，平行度较高（P 0.05）：在这项研究中，我们的研究结果表明，在拔除第一前磨牙的病例中，隐适美透明矫治器与固定矫治器相比，可以提供相当甚至更优越的牙根三维平行度，但上下切牙的中轴维度除外，因为在该维度上，隐适美透明矫治器的效果较差。

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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来源期刊

Orthodontics & Craniofacial Research 医学-牙科与口腔外科

CiteScore

5.30

自引率

3.20%

发文量

审稿时长

>12 weeks

期刊介绍： Orthodontics & Craniofacial Research - Genes, Growth and Development is published to serve its readers as an international forum for the presentation and critical discussion of issues pertinent to the advancement of the specialty of orthodontics and the evidence-based knowledge of craniofacial growth and development. This forum is based on scientifically supported information, but also includes minority and conflicting opinions. The objective of the journal is to facilitate effective communication between the research community and practicing clinicians. Original papers of high scientific quality that report the findings of clinical trials, clinical epidemiology, and novel therapeutic or diagnostic approaches are appropriate submissions. Similarly, we welcome papers in genetics, developmental biology, syndromology, surgery, speech and hearing, and other biomedical disciplines related to clinical orthodontics and normal and abnormal craniofacial growth and development. In addition to original and basic research, the journal publishes concise reviews, case reports of substantial value, invited essays, letters, and announcements. The journal is published quarterly. The review of submitted papers will be coordinated by the editor and members of the editorial board. It is policy to review manuscripts within 3 to 4 weeks of receipt and to publish within 3 to 6 months of acceptance.