Clinical analysis of orthodontic traction of impacted upper incisors
10.12016/j.issn.2096-1456.2024.04.005
- Author:
GUO Suying
1
;
LU Shijun
1
;
DING Yuanfeng
1
Author Information
1. First Department of Orthodontics, Suzhou Stomatological Hospital
- Publication Type:Journal Article
- Keywords:
impacted teeth / keratinized gingiva width / alveolar bone width / root length / cone beam CT / orthodontic traction / anterior tooth aesthetics / gingival biotype
- From:
Journal of Prevention and Treatment for Stomatological Diseases
2024;32(4):273-279
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the effect of orthodontic traction on the roots and periodontal soft and hard tissues of buried obstructed upper incisors.
Methods:This study was reviewed and approved by the ethics committee, and informed consent was obtained from the patients. From January 2018 to December 2022, 40 patients who underwent orthodontic traction on impacted upper incisors were selected; those whose contralateral homonymous apical foramen was not developed were placed in group A (23 cases), and those whose contralateral homonymous apical foramen was developed were placed in group B (17 cases). Software was used to measure the root length of the impacted upper incisors in groups A and B on cone beam CT (CBCT) images before and after traction and compare the changes in alveolar bone (alveolar bone width, labral bone plate thickness, and horizontal height of alveolar bone) and keratinized gingival width between each impacted upper incisor and the corresponding contralateral tooth immediately and one year after traction
Results:The root length of the impacted upper incisors increased after traction compared to before traction (P<0.05). The width of the alveolar bone at the completion of traction in group A was similar to that of the contralateral homonymous tooth (P>0.05), whereas the width of the alveolar bone at the completion of traction in group B did not reach that of the contralateral homonymous tooth, with a significant difference in width (P<0.05). Neither the labial bone plate height or width in group A or B reached that of the contralateral homonymous tooth after traction (P<0.05). The keratinized gingival width on the affected side was also significantly smaller than that on the contralateral side (P<0.05), but it was increased significantly in group A at the one-year follow-up visit (P<0.05).
Conclusion:Tooth traction is conducive to impacted upper incisor root growth, alveolar bone reconstruction and keratinized gingival growth but cannot produce complete symmetry with respect to the contralateral side.
- Full text:埋伏上切牙正畸牵引的临床分析.pdf
