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单侧上颌阻生尖牙的特征及其对周围组织的影响：一项锥形束计算机断层扫描（CBCT）研究

Characteristics of Unilaterally Impacted Maxillary Canines and Effect on Environmental Tissues: A CBCT Study.

作者信息

Kucukkaraca Ebru

机构信息

Department of Orthodontics, Faculty of Dentistry, Ankara Yildirim Beyazit University, 06220 Ankara, Turkey.

出版信息

Children (Basel). 2023 Oct 16;10(10):1694. doi: 10.3390/children10101694.

DOI:10.3390/children10101694
PMID:37892358
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10605828/
Abstract

BACKGROUND

The prognosis of orthodontic treatment for a patient with impacted canine teeth can be affected by many factors and understanding some of the characteristics of impacted teeth can increase the effectiveness and reduce the duration of treatment. This study aims to explore the effects of positions and dentoalveolar morphological characteristics of impacted maxillary canines on the prognosis of orthodontic treatment.

METHODS

In this study, forty-six adolescent individuals who applied for treatment of impacted teeth were divided into three groups: CC (no impacted maxillary canine group), BC (unilateral buccally positioned impacted maxillary canine group), and PC (unilateral palatally positioned impacted maxillary canine group). The impacted canine and adjacent teeth were evaluated in terms of position, angulation, inclination, mesiodistal and buccolingual widths, root length, dilaceration angle, and root resorption.

RESULTS

The mean values of U3 Ang (angulation of the maxillary impacted canine) and U3/U2 angles (maxillary impacted canine and lateral incisor angle) were statistically significantly higher in the BC and PC groups ( < 0.001). The mean values of U2 RL (lateral incisor root length) and U3 RD (canine root dilaceration angle) were statistically significantly lower in the BC and PC groups.

CONCLUSIONS

The results of this study suggest that shorter root lengths and increased angulation values may lead to the ectopic eruption of canines. The higher canine angulations in the PC group increase the degree of root resorption.

摘要

背景

阻生尖牙患者正畸治疗的预后会受到多种因素影响，了解阻生牙的一些特征可提高治疗效果并缩短治疗时间。本研究旨在探讨上颌阻生尖牙的位置及牙槽骨形态特征对正畸治疗预后的影响。

方法

本研究将46名申请阻生牙治疗的青少年个体分为三组：CC组（无上颌阻生尖牙组）、BC组（单侧颊侧阻生上颌尖牙组）和PC组（单侧腭侧阻生上颌尖牙组）。对阻生尖牙及相邻牙齿的位置、角度、倾斜度、近远中及颊舌径宽度、牙根长度、弯曲角度和牙根吸收情况进行评估。

结果

BC组和PC组的U3角（上颌阻生尖牙的角度）及U3/U2角（上颌阻生尖牙与侧切牙的角度）平均值在统计学上显著更高（<0.001）。BC组和PC组的U2 RL（侧切牙根长度）及U3 RD（尖牙牙根弯曲角度）平均值在统计学上显著更低。

结论

本研究结果表明，较短的牙根长度和增大的角度值可能导致尖牙异位萌出。PC组中较高的尖牙角度增加了牙根吸收程度。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ff/10605828/45bd34628dce/children-10-01694-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ff/10605828/5102f18ce9de/children-10-01694-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ff/10605828/085cd33ebe3b/children-10-01694-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ff/10605828/c59a17b1fd3f/children-10-01694-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ff/10605828/1bf88cfd41f5/children-10-01694-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ff/10605828/1965a5150d63/children-10-01694-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ff/10605828/45bd34628dce/children-10-01694-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ff/10605828/5102f18ce9de/children-10-01694-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ff/10605828/085cd33ebe3b/children-10-01694-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ff/10605828/c59a17b1fd3f/children-10-01694-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ff/10605828/1bf88cfd41f5/children-10-01694-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ff/10605828/1965a5150d63/children-10-01694-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/21ff/10605828/45bd34628dce/children-10-01694-g006.jpg

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Investigation of the Relationship of Impacted Maxillary Canines with Orthodontic Malocclusion: A Retrospective Study.上颌阻生尖牙与正畸错牙合关系的调查：一项回顾性研究
Children (Basel). 2023 May 26;10(6):950. doi: 10.3390/children10060950.
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Evaluation of skeletal and dentoalveolar dimensions in patients with maxillary unilateral impacted canine: a cone beam computed tomographic study.上颌单侧埋伏尖牙患者的骨骼和牙牙槽尺寸评估：锥形束 CT 研究。
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使用全景X线摄影参数预测上颌埋伏尖牙正畸治疗的成功率：一项回顾性横断面研究。
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Comparisons of Two Different Treatment Methods for Impacted Maxillary Canines: A Retrospective Study.上颌阻生尖牙两种不同治疗方法的比较：一项回顾性研究
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Morphometric Comparison and Prognostic Analysis of Permanent Maxillary Central Incisors with Eruption Disturbances-A Cross-Sectional Study.恒牙上颌中切牙萌出障碍的形态计量学比较与预后分析——一项横断面研究
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低风险患者中潜在阻生犬齿的临床预测因素：一项混合牙列的回顾性研究
Korean J Orthod. 2023 Mar 25;53(2):106-115. doi: 10.4041/kjod22.179.
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Am J Orthod Dentofacial Orthop. 2022 Sep;162(3):318-330. doi: 10.1016/j.ajodo.2021.03.025. Epub 2022 Apr 13.
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Association Between Impacted Maxillary Canines and Adjacent Lateral Incisors: A Retrospective Study With Cone Beam Computed Tomography.上颌埋伏尖牙与相邻侧切牙之间的关系：一项基于锥形束计算机断层扫描的回顾性研究
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Am J Orthod Dentofacial Orthop. 2021 Feb;159(2):167-174. doi: 10.1016/j.ajodo.2019.12.019. Epub 2020 Dec 18.