Skeletal and dentoalveolar effects of miniscrew-assisted rapid palatal expansion based on the length of the miniscrew: a randomized clinical trial.

IF 3 2区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Angle Orthodontist Pub Date : 2023-07-01 DOI:10.2319/072322-512.1
Eun-Hack Andrew Choi, Kee-Joon Lee, Sung-Hwan Choi, Hwi-Dong Jung, Hyung-Joon Ahn, Toru Deguchi, Jung-Yul Cha
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引用次数: 1

Abstract

Objectives: To compare skeletal and dentoalveolar changes of miniscrew-assisted rapid palatal expansion (MARPE) according to the length of the miniscrews.

Materials and methods: This two-arm parallel-randomized controlled trial included 32 adult patients aged 19-35 years who received orthodontic treatment with MARPE. Patients were allocated to two groups, group long (L) and short (S), through block randomization according to the length of the miniscrews installed in MARPE. Cone-beam computed tomography was performed before expansion and after removal of the MARPE; superimposition of the images was conducted. The primary outcome included the amount of bone expansion and the change in the inclination of the anchorage teeth. The secondary outcome included the success rate of midpalatal suture opening and stability of the miniscrews. Blinding was performed during outcome assessment.

Results: The final sample comprised 31 patients. There was no significant difference in patient characteristics between group L (n = 16) and group S (n = 15). The change in the width of the processus zygomaticus (P = .010) and ectocanine (P = .001) was significantly higher in group L. A significantly higher success rate of the posterior miniscrews was seen in group L (P = .024). There was no statistically significant difference in the success rate of suture separation or change in tooth inclination. Notable complications were not reported.

Conclusions: MARPE with longer miniscrews can increase the amount of expansion of the maxillary basal bone and canine alveolar bone. Although it also aided in miniscrew stability, it did not guarantee successful midpalatal suture separation.

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基于微型支架长度的微型支架辅助快速腭扩张对骨骼和牙槽的影响:一项随机临床试验。
目的:比较微钉辅助快速腭扩张术(MARPE)在不同长度微钉辅助快速腭扩张术中骨骼和牙槽牙的变化。材料和方法:本研究纳入32例年龄19-35岁接受MARPE正畸治疗的成人患者。根据MARPE中安装的微型螺钉的长度,通过分组随机将患者分为长组(L)和短组(S)。在扩张前和切除MARPE后分别进行锥束计算机断层扫描;对图像进行叠加。主要结果包括骨扩张量和支抗牙的倾斜度变化。次要结果包括中腭缝线打开的成功率和微型螺钉的稳定性。结果评估时采用盲法。结果:最终样本包括31例患者。L组(n = 16)与S组(n = 15)患者特征无显著差异。L组颧突宽度变化(P = 0.010)和外突宽度变化(P = 0.001)显著高于L组,L组后侧微型螺钉成功率显著高于L组(P = 0.024)。两组间缝线分离成功率及牙倾角变化无统计学差异。未见明显并发症。结论:长钉MARPE可以增加上颌基骨和犬牙槽骨的扩张量。虽然它也有助于微钉的稳定性,但它并不能保证成功的中腭缝线分离。
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来源期刊
Angle Orthodontist
Angle Orthodontist 医学-牙科与口腔外科
CiteScore
6.40
自引率
5.90%
发文量
95
审稿时长
3 months
期刊介绍: The Angle Orthodontist is the official publication of the Edward H. Angle Society of Orthodontists and is published bimonthly in January, March, May, July, September and November by The EH Angle Education and Research Foundation Inc. The Angle Orthodontist is the only major journal in orthodontics with a non-commercial, non-profit publisher -- The E. H. Angle Education and Research Foundation. We value our freedom to operate exclusively in the best interests of our readers and authors. Our website www.angle.org is completely free and open to all visitors.
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