Tooth movement analysis of maxillary dentition distalization using clear aligners with buccal and palatal mini-screw anchorages: A finite element study

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

Orthodontics & Craniofacial Research Pub Date : 2024-06-22 DOI:10.1111/ocr.12826

Runzhi Guo, Linwei Li, Xiang Yao Lam, Qianyi Qin, Yunfei Zheng, Yiping Huang, Yifan Lin, Weiran Li

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引用次数: 0

Abstract

Objective

To assess the tooth movement trends during the three stages of maxillary dentition distalization with clear aligners (CA) and to compare the efficacy of different mini-screw anchorage systems.

Materials and Methods

Three-dimensional (3D) finite element models of three anchorage systems (A, control group; B, buccal mini-screw anchorage group; C, palatal mini-screw anchorage group) were established. Three stages of simulating maxillary dentition distalization with CA included maxillary molar distalization (stage 1), maxillary premolar distalization (stage 2) and maxillary anterior teeth retraction (stage 3). Therefore, a total of nine models were constructed to analyse the 3D displacement of maxillary teeth during the distalization process.

Results

The displacement pattern of maxillary dentition during distalization was similar across the three groups, but with varying magnitudes. During stage 1, groups B and C exhibited greater amounts of molar distalization compared to group A. Group C also demonstrated the least amount of labial movement of the maxillary central incisor compared to the other two groups. During stage 2, the mesial displacement of the maxillary first molar was less significant in groups B and C than in group A. In the final stage, group C exhibited a greater amount of maxillary anterior retraction compared to groups A and B.

Conclusion

The palatal mini-screw anchorage system was effective in reducing anchorage loss and improving the efficacy of maxillary dentition distalization with CA.

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使用带有颊颌和腭颌微型螺钉固定装置的透明矫治器进行上颌牙远端矫治的牙齿移动分析：有限元研究

材料与方法建立了三种锚固系统（A，对照组；B，颊侧微型螺钉锚固组；C，腭侧微型螺钉锚固组）的三维（3D）有限元模型。用 CA 模拟上颌牙体远端化的三个阶段包括上颌磨牙远端化（阶段 1）、上颌前磨牙远端化（阶段 2）和上颌前牙后缩（阶段 3）。因此，我们共构建了九个模型来分析上颌牙齿在远化过程中的三维位移。与其他两组相比，C 组上颌中切牙的唇侧移动量最小。在第二阶段，B 组和 C 组上颌第一磨牙的中线移位没有 A 组明显。在最后阶段，与 A 组和 B 组相比，C 组表现出更大的上颌前缩。

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.