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

被引：1

作者：

Liu, Pei ^{[1
]}

Li, Renpeng ^{[1
]}

Cheng, Yong ^{[1
,2
]}

Li, Bo ^{[1
,2
]}

Wei, Lili ^{[1
,2
]}

Li, Wei ^{[1
,2
]}

Guo, Xiaolong ^{[1
,2
]}

Li, Hang ^{[1
,2
]}

Wang, Fang ^{[1
,2
,3
]}

机构：

[1] Wuhan Univ, Sch & Hosp Stomatol, Hubei Key Lab Stomatol, State Key Lab Oral & Maxillofacial Reconstruct & R, Wuhan 430079, Hubei, Peoples R China

[2] Wuhan Univ, Sch & Hosp Stomatol, Dept Oral Radiol, Wuhan 430079, Hubei, Peoples R China

[3] Wuhan Univ, Sch & Hosp Stomatol, Key Lab Oral Biomed, Minist Educ,State Key Lab Oral & Maxillofacial Rec, 237 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China

来源：

DENTOMAXILLOFACIAL RADIOLOGY | 2024年 / 53卷 / 01期

关键词：

gubernacular tract; mandibular canine; eruption; cone-beam computed tomography; three-dimensional measurement; CONE-BEAM;

D O I：

10.1093/dmfr/twad008

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

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.

引用

页码：60 / 66

页数：7

共 31 条

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