Assessment of hard and soft tissue thickness at mandibular symphysis in skeletal Class III patients with different vertical patterns

IF 2.4 3区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Orthodontics & Craniofacial Research Pub Date : 2024-07-02 DOI:10.1111/ocr.12829

Jiyoung Oh, Lyun Kwang Ham, Hyemin Shin, Sung-Hoon Han, Yoonji Kim

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引用次数: 0

Abstract

Introduction

This study aimed to assess the bony and soft tissue parameters at mandibular symphysis among skeletal Class III patients with different vertical growth patterns, using cone-beam computed tomography (CBCT).

Materials and Methods

CBCT images of 60 skeletal Class III non-growing patients were evaluated (mean age 24.9 ± 8.4 years). Study samples were classified into three facial types based on the mandibular plane angle (SN-MP angle): low, normal, and high angle. The bony and soft tissue parameters at the mandibular symphysis were evaluated.

Results

Among hard tissue variables, symphysis and pogonion width were significantly narrower in the high-angle group (P < .05). The thickness of the buccal cortex at pogonion was also significantly thinner in subjects with high angles (P < .01). Symphysis height showed an increasing tendency from the low-angle to the high-angle group. However, no significant differences were found in chin width and height according to vertical patterns. Across all soft tissue measurements, the low-angle group exhibited the highest thickness, which gradually decreased in the high-angle group. Statistically significant differences in soft tissue thickness were observed at Menton (Me) and Gnathion (Gn) (P < .05). A significant negative correlation was observed between the SN-MP angle and the thickness of both hard and soft tissues.

Conclusions

In skeletal Class III subjects, significant differences existed in both hard and soft tissues at the mandibular symphysis, depending on the vertical patterns. These results provide a comprehensive evaluation of symphyseal area, which can aid clinicians in identifying appropriate treatment approaches, especially for combined orthognathic and orthodontic treatment.

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评估骨骼Ⅲ级患者下颌骨骨骺处的软硬组织厚度，采用不同的垂直模式。

简介：本研究旨在使用锥束计算机断层扫描（CBCT）技术评估不同垂直生长模式的骨骼三级患者下颌骨干骺端的骨骼和软组织参数：本研究旨在使用锥形束计算机断层扫描（CBCT）评估具有不同垂直生长模式的骨骼III级患者下颌骨干骺端的骨骼和软组织参数：评估了 60 名骨骼 III 级非生长型患者（平均年龄为 24.9 ± 8.4 岁）的 CBCT 图像。研究样本根据下颌平面角度（SN-MP 角度）分为三种面部类型：低角度、正常角度和高角度。对下颌骨干骺端的骨骼和软组织参数进行了评估：结果：在硬组织变量中，高角度组的干骺端和骺端宽度明显较窄（P 结论：高角度组的干骺端和骺端宽度明显较窄（P）：在骨骼Ⅲ级受试者中，下颌骨干骺端的硬组织和软组织均存在明显差异，这取决于垂直模式。这些结果提供了对干骺端面积的全面评估，有助于临床医生确定适当的治疗方法，尤其是正颌和正畸联合治疗。

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

Orthodontics & Craniofacial Research 医学-牙科与口腔外科

CiteScore

5.30

自引率

3.20%

发文量

审稿时长

>12 weeks

期刊介绍： Orthodontics & Craniofacial Research - Genes, Growth and Development is published to serve its readers as an international forum for the presentation and critical discussion of issues pertinent to the advancement of the specialty of orthodontics and the evidence-based knowledge of craniofacial growth and development. This forum is based on scientifically supported information, but also includes minority and conflicting opinions. The objective of the journal is to facilitate effective communication between the research community and practicing clinicians. Original papers of high scientific quality that report the findings of clinical trials, clinical epidemiology, and novel therapeutic or diagnostic approaches are appropriate submissions. Similarly, we welcome papers in genetics, developmental biology, syndromology, surgery, speech and hearing, and other biomedical disciplines related to clinical orthodontics and normal and abnormal craniofacial growth and development. In addition to original and basic research, the journal publishes concise reviews, case reports of substantial value, invited essays, letters, and announcements. The journal is published quarterly. The review of submitted papers will be coordinated by the editor and members of the editorial board. It is policy to review manuscripts within 3 to 4 weeks of receipt and to publish within 3 to 6 months of acceptance.