骨性 III 类错（牙合）伴下颌偏斜及单侧后牙反（牙合）成年患者经微螺钉辅助快速腭扩展后面部形态和髁突位置的变化。

Condylar morphology and position changes after miniscrew-assisted rapid palatal expansion in skeletal Class III malocclusion adult patients with mandibular deviation and unilateral posterior crossbite.

机构信息

Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, 250012, China.

The Center of Stomatology, Qingdao Municipal Hospital Affiliated to Qingdao University, #5 Donghai Middle Road, Qingdao, 266000, China.

出版信息

Prog Orthod. 2022 Sep 1;23(1):30. doi: 10.1186/s40510-022-00425-4.

DOI:10.1186/s40510-022-00425-4

PMID:36045260

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9433628/

Abstract

BACKGROUND

To evaluate the morphological and positional changes of mandibular condyle after miniscrew-assisted rapid palatal expansion (MARPE) in skeletal Class III malocclusion adult patients with horizontal mandibular deviation (MD).

METHODS

The sample consisted of 15 patients with MD (6 males and 9 females, mean age 21.58 ± 3.12 years). The CBCT scans were taken before and after MARPE immediately. The pre- and post-registered images of the cranial base and mandible were measured, respectively, by Mimics.

RESULTS

After expansion, the distance between superior condylar point and the Frankfort horizontal plane on the deviated side and the non-deviated side increased by 0.96 ± 0.60 mm (P = 0.011) and 0.70 ± 0.65 mm (P = 0.046); coronal condylar angle of the deviated side increased by 0.39° ± 0.34 (P = 0.028) and 0.06° ± 0.49 (P = 0.917) on the non-deviated side. No statistically significant differences were found when comparing the condylar position on both sides before and after treatment. The degree of mandibular deviation decreased 0.43 mm (P = 0.270).

CONCLUSIONS

This study suggested that for skeletal Class III malocclusion adult patients with horizontal MD, the condyle on the deviated side rotated toward the non-deviated side in the coronal direction; the condylar remodeling occurred mainly on the deviated side after MARPE in the vertical direction.

摘要

背景

评估水平下颌偏斜的骨性 III 类错（牙合）畸形成年患者接受微螺钉辅助快速腭扩展（MARPE）后下颌髁突的形态和位置变化。

方法

本研究纳入 15 例下颌偏斜的 MD 患者（男 6 例，女 9 例，平均年龄 21.58 ± 3.12 岁）。在 MARPE 治疗前后即刻分别进行 CBCT 扫描。通过 Mimics 分别测量颅底和下颌的预注册和后注册图像。

结果

扩展后，患侧和非患侧的上髁突点与法兰克福平面的距离分别增加了 0.96 ± 0.60mm（P=0.011）和 0.70 ± 0.65mm（P=0.046）；患侧冠状髁突角增加了 0.39°±0.34（P=0.028）和 0.06°±0.49（P=0.917）。治疗前后两侧髁突位置比较，差异无统计学意义。下颌偏斜程度减小了 0.43mm（P=0.270）。