Morphological variation of gubernacular tracts for permanent mandibular canines in eruption: a three-dimensional analysis.

IF 2.9 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Dento maxillo facial radiology Pub Date : 2024-01-11 DOI:10.1093/dmfr/twad008

Pei Liu, Renpeng Li, Yong Cheng, Bo Li, Lili Wei, Wei Li, Xiaolong Guo, Hang Li, Fang Wang

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引用次数: 0

Abstract

Objectives: This study aims to evaluate the morphological features of gubernacular tract (GT) for erupting permanent mandibular canines at different ages from 5 to 9 years old with a three-dimensional (3D) measurement method.

Methods: The cone-beam CT images of 50 patients were divided into five age groups. The 3D models of the GT for mandibular canines were reconstructed and analysed. The characteristics of the GT, including length, diameter, ellipticity, tortuosity, superficial area, volume, and the angle between the canine and GT, were evaluated using a centreline fitting algorithm.

Results: Among the 100 GTs that were examined, the length of the GT for mandibular canines decreased between the ages of 5 and 9 years, while the diameter increased until the age of 7 years. Additionally, the ellipticity and tortuosity of the GT decreased as age advanced. The superficial area and volume exhibited a trend of initially increasing and then decreasing. The morphological variations of the GT displayed heterogeneous changes during different periods.

Conclusions: The 3D measurement method effectively portrayed the morphological attributes of the GT for mandibular canines. The morphological characteristics of the GT during the eruption process exhibited significant variations. The variations in morphological changes may indicate different stages of mandibular canine eruption.

查看原文本刊更多论文

恒下颌犬齿萌出时龈沟的形态变化：三维分析。

目的：本研究旨在通过三维测量方法，评估5至9岁不同年龄段下颌恒牙萌出沟的形态特征：本研究旨在通过三维（3D）测量方法，评估5至9岁不同年龄段下颌恒牙萌出沟的形态特征：方法：将 50 名患者的锥束 CT 图像分为五个年龄组。方法：将 50 名患者的锥束 CT 图像分为 5 个年龄组，重建并分析下颌犬齿 GT 的三维模型。采用中心线拟合算法评估 GT 的特征，包括长度、直径、椭圆度、迂曲度、表面积、体积以及犬齿与 GT 之间的角度：结果：在检测的 100 个牙槽骨中，下颌犬齿的牙槽骨长度在 5 到 9 岁之间有所减少，而直径在 7 岁之前有所增加。此外，随着年龄的增长，牙槽骨的椭圆度和迂曲度也在下降。表面积和体积呈现出先增大后减小的趋势。GT的形态变化在不同时期呈现出异质性变化：结论：三维测量方法有效地描述了下颌犬齿GT的形态特征。下颌犬齿GT的形态特征在萌出过程中表现出明显的变化。形态变化的差异可能预示着下颌犬牙萌出的不同阶段。

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

Dento maxillo facial radiology 医学-核医学

CiteScore

5.60

自引率

9.10%

发文量

审稿时长

4-8 weeks

期刊介绍： Dentomaxillofacial Radiology (DMFR) is the journal of the International Association of Dentomaxillofacial Radiology (IADMFR) and covers the closely related fields of oral radiology and head and neck imaging. Established in 1972, DMFR is a key resource keeping dentists, radiologists and clinicians and scientists with an interest in Head and Neck imaging abreast of important research and developments in oral and maxillofacial radiology. The DMFR editorial board features a panel of international experts including Editor-in-Chief Professor Ralf Schulze. Our editorial board provide their expertise and guidance in shaping the content and direction of the journal. Quick Facts: - 2015 Impact Factor - 1.919 - Receipt to first decision - average of 3 weeks - Acceptance to online publication - average of 3 weeks - Open access option - ISSN: 0250-832X - eISSN: 1476-542X