The design of bone-borne maxillary expander affects the different dentoalveolar inclination and expansion pattern: A CBCT study

IF 2.2 4区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Seminars in Orthodontics Pub Date : 2024-05-16 DOI:10.1053/j.sodo.2024.05.002

Jin Bai , Jin-Young Choi , Seong-Hun Kim

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引用次数: 0

Abstract

Objective

This study compared the skeletal and dentoalveolar changes induced by tissue-bone-borne expander (C-expander) and pure-bone-borne expander (ATOZ-expander) using CBCT analysis. We aimed to identify their distinct expansion patterns and potential clinical implications.

Materials and Methods

A total of 60 subjects, comprising 14 males and 46 females with an average age of 18.5 ± 7.36 years, were divided into two groups: the tissue-bone-borne expander group (CEXP group, N = 30, average age 19.16 ± 7.09 years) and the pure-bone-borne expander group (ATOZ group, N = 30, average age 17.83 ± 7.56 years). CBCT scans were obtained before (T1) and after expansion (T2). Zygomatic, palatal, and dentoalveolar dimensions were measured and analyzed using paired T-tests and Kruskal-Wallis tests.

Results

The CEXP group demonstrated significantly greater dental expansion and an increase in dentoalveolar inclination. In contrast, the ATOZ group exhibited significantly less zygomatic expansion and a decrease in dentoalveolar inclination. In horizontal plane, the CEXP group showed more parallel expansion pattern than the ATOZ group. Both groups showed similar amount of palatal expansion.

Conclusion

The tissue-bone-borne C-expander demonstrated more pronounced dentoalveolar effects with a vertically pyramidal and sagittally parallel pattern of expansion. In contrast, the pure bone-borne ATOZ-expander exhibited more substantial skeletal effects with a vertically parallel and sagittally trapezoid expansion.

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骨性上颌扩张器的设计会影响不同的牙槽倾角和扩张模式：CBCT 研究

目的应用CBCT分析比较组织骨扩张器（C-expander）和纯骨扩张器（ataz -expander）对骨和牙槽骨的影响。我们的目的是确定其独特的扩张模式和潜在的临床意义。材料与方法60例患者，男14例，女46例，平均年龄18.5±7.36岁，分为组织骨载扩张器组（CEXP组，N = 30，平均年龄19.16±7.09岁）和纯骨载扩张器组（ATOZ组，N = 30，平均年龄17.83±7.56岁）。ct扫描分别在扩张前（T1）和扩张后（T2）进行。使用配对t检验和Kruskal-Wallis检验测量和分析颧骨、腭和牙槽尺寸。结果CEXP组牙扩展明显增大，牙槽倾角明显增加。相比之下，ATOZ组表现出明显较少的颧骨扩张和牙槽倾角下降。在水平面上，CEXP组比ATOZ组表现出更多的平行扩张模式。两组的腭扩张量相近。结论组织骨运载的c型扩张器对牙槽的影响更明显，呈垂直锥体和矢状平行扩张。相比之下，纯骨载atoz -扩张器表现出更实质性的骨骼效应，具有垂直平行和矢状梯形扩张。

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

Seminars in Orthodontics DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

2.20

自引率

4.80%

发文量

审稿时长

10 days

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