Evaluation of condylar dimension and position following rapid maxillary expansion with tooth- or tooth-bone-borne appliances.

IF 2.6 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Korean Journal of Orthodontics Pub Date : 2024-11-25 Epub Date: 2024-10-11 DOI:10.4041/kjod24.142

Merve Nur Eglenen, Seden Akan, Derya Germec-Cakan

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引用次数: 0

Abstract

Objective: To assess and compare changes in the dimension and position of the mandibular condyle after tooth-borne (Hyrax) and tooth-bone-borne (Hybrid Hyrax) expansion.

Methods: Twenty-five patients who underwent expansion with either tooth-borne appliances (8 girls, 5 boys; mean age 14.3 ± 2.3 years) or tooth-bone-borne appliances (6 girls, 6 boys; mean age 13.8 ± 2.2 years) were examined. Condylar and glenoid fossa morphology before (T0) and 3 months after (T1) expansion were evaluated using cone-beam computed tomography. Condylar measurements (anterior, posterior, and superior joint spaces; condylar height, length, and width), along with sagittal and vertical skeletal and maxillary transversal measurements, were analyzed using Dolphin Imaging software. Wilcoxon and Paired t tests were used for T0 and T1 evaluations, and the Mann-Whitney U test for intergroup comparisons.

Results: At both T0 and T1, no statistically significant differences were observed between the groups in terms of condylar dimensions or the position of the condyle within the glenoid fossa. Maxillary transversal measurements increased after expansion in both groups (P < 0.01), with a significantly greater increase in first premolar width in the Hyrax group (P < 0.05). The vertical position of the posterior teeth showed no noteworthy changes (P > 0.05), except for the right second premolar. Temporomandibular joint measurements did not significantly change in either group after treatment (P > 0.05).

Conclusions: Neither tooth-borne nor tooth-bone-borne expansion caused significant changes in the condylar dimensions and position at the end of treatment.

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使用牙齿或牙骨质矫形器快速扩张上颌骨后的髁状突尺寸和位置评估。

目的评估并比较牙源性（Hyrax）和牙骨性（Hybrid Hyrax）扩颌术后下颌髁状突尺寸和位置的变化：对 25 名使用牙源性矫治器（8 名女孩，5 名男孩；平均年龄为 14.3 ± 2.3 岁）或牙骨性矫治器（6 名女孩，6 名男孩；平均年龄为 13.8 ± 2.2 岁）进行扩容的患者进行了检查。使用锥形束计算机断层扫描对扩容前（T0）和扩容后 3 个月（T1）的髁突和盂窝形态进行评估。使用 Dolphin Imaging 软件分析了髁突测量值（前、后和上关节间隙；髁突高度、长度和宽度）以及矢状和垂直骨骼和上颌骨横向测量值。T0和T1评估采用Wilcoxon和配对t检验，组间比较采用Mann-Whitney U检验：结果：在T0和T1阶段，各组间在髁突尺寸或髁突在盂窝内的位置方面均无统计学意义上的显著差异。扩容后，两组的上颌骨横向测量值均有所增加（P < 0.01），其中 Hyrax 组第一前磨牙宽度的增加幅度更大（P < 0.05）。除右侧第二前磨牙外，后牙的垂直位置没有明显变化（P > 0.05）。治疗后，两组的颞下颌关节测量值均无明显变化（P > 0.05）：结论：治疗结束时，牙本质或牙骨质扩弓均未引起髁突尺寸和位置的显著变化。

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

Korean Journal of Orthodontics DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

3.50

自引率

10.50%

发文量

审稿时长

>12 weeks

期刊介绍： The Korean Journal of Orthodontics (KJO) is an international, open access, peer reviewed journal published in January, March, May, July, September, and November each year. It was first launched in 1970 and, as the official scientific publication of Korean Association of Orthodontists, KJO aims to publish high quality clinical and scientific original research papers in all areas related to orthodontics and dentofacial orthopedics. Specifically, its interest focuses on evidence-based investigations of contemporary diagnostic procedures and treatment techniques, expanding to significant clinical reports of diverse treatment approaches. The scope of KJO covers all areas of orthodontics and dentofacial orthopedics including successful diagnostic procedures and treatment planning, growth and development of the face and its clinical implications, appliance designs, biomechanics, TMJ disorders and adult treatment. Specifically, its latest interest focuses on skeletal anchorage devices, orthodontic appliance and biomaterials, 3 dimensional imaging techniques utilized for dentofacial diagnosis and treatment planning, and orthognathic surgery to correct skeletal disharmony in association of orthodontic treatment.