Vertical changes in the hard tissues after space closure by miniscrew sliding mechanics: a three-dimensional modality analysis.

IF 2.4 2区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Head & Face Medicine Pub Date : 2023-12-04 DOI:10.1186/s13005-023-00388-9

Hong Su, Zimeng Zhuang, Bing Han, Tianmin Xu, Gui Chen

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引用次数: 0

Abstract

Objectives: This study aimed to investigate vertical changes in the maxillary central incisor and the maxillary first molar, along with alterations in the mandibular plane angle during space closure using miniscrew sliding mechanics.

Methods: Twenty adult patients treated at Peking University Hospital of Stomatology between 2008 and 2013 were included. Digital dental models and craniofacial cone-beam computed tomography (CBCT) scans were obtained at the start of treatment (T0) and immediately after space closure (T1). Stable miniscrews were used for superimposing maxillary digital dental models (T0 and T1), and vertical changes in the maxillary first molar and the maxillary central incisor were measured. Three-dimensional changes in the mandibular plane were assessed through CBCT superimposition.

Results: The maxillary central incisor exhibited an average extrusion of 2.56 ± 0.18 mm, while the maxillary first molar showed an average intrusion of 1.25 ± 1.11 mm with a distal movement of 0.97 ± 0.99 mm. Additionally, the mandibular plane angle decreased by an average of 0.83 ± 1.65°. All three indices exhibited statistically significant differences.

Conclusion: During space closure using the miniscrew sliding technique, significant changes occurred in both the sagittal and vertical dimensions of the upper dentition. This included extrusion of the maxillary central incisors, intrusion of the maxillary first molars, and a slight counterclockwise rotation of the mandibular plane.

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空间闭合后硬组织垂直变化的微滑动力学:三维模态分析。

目的:本研究旨在探讨上颌中切牙和上颌第一磨牙在空间闭合过程中的垂直变化，以及下颌平面角的变化。方法:选取2008 - 2013年在北京大学口腔医院就诊的成人患者20例。在治疗开始(T0)和间隙闭合后(T1)立即获得数字牙齿模型和颅面锥束计算机断层扫描(CBCT)。用稳定的微型牙钉叠加上颌数字牙模型(T0和T1)，测量上颌第一磨牙和上颌中切牙的垂直变化。通过CBCT叠加评估下颌平面三维变化。结果:上颌中切牙平均外移2.56±0.18 mm，上颌第一磨牙平均外移1.25±1.11 mm，远端外移0.97±0.99 mm。下颌平面角平均下降0.83±1.65°。3个指标差异均有统计学意义。结论:在使用微型滑动技术闭合间隙时，上牙列矢状面和垂直面都发生了明显的变化。这包括上颌中切牙的挤压，上颌第一磨牙的侵入，以及下颌平面轻微的逆时针旋转。

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

Head & Face Medicine DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

4.70

自引率

3.30%

发文量

审稿时长

>12 weeks

期刊介绍： Head & Face Medicine is a multidisciplinary open access journal that publishes basic and clinical research concerning all aspects of cranial, facial and oral conditions. The journal covers all aspects of cranial, facial and oral diseases and their management. It has been designed as a multidisciplinary journal for clinicians and researchers involved in the diagnostic and therapeutic aspects of diseases which affect the human head and face. The journal is wide-ranging, covering the development, aetiology, epidemiology and therapy of head and face diseases to the basic science that underlies these diseases. Management of head and face diseases includes all aspects of surgical and non-surgical treatments including psychopharmacological therapies.