Evaluation of cortical limitation of the mandibular second molar distalization with cone beam computed tomography
Objective To measure the bone mass around the root of mandibular second molar and explore the limiting factors and related factors affecting the distal movement of mandibular second molar. Methods CBCT samples of patients before orthodontic treatment were collected. The alveolar bone width, root wid...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Stomatology
2024-12-01
|
| Series: | Kouqiang yixue |
| Subjects: | |
| Online Access: | https://www.stomatology.cn/fileup/1003-9872/PDF/1735180919057-417513159.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841542589310828544 |
|---|---|
| author | CHENG Ye, ZENG Weihao, LI Huang, LEI Lang |
| author_facet | CHENG Ye, ZENG Weihao, LI Huang, LEI Lang |
| author_sort | CHENG Ye, ZENG Weihao, LI Huang, LEI Lang |
| collection | DOAJ |
| description | Objective To measure the bone mass around the root of mandibular second molar and explore the limiting factors and related factors affecting the distal movement of mandibular second molar. Methods CBCT samples of patients before orthodontic treatment were collected. The alveolar bone width, root width, as well as the distance between root and bone cortex were measured at different levels. Distance between distal edge of crown and anterior edge of mandibular ascending branchwas also measured.The lateral cephalic film was generated for routine projection measurement. The correlation of the measurement index and the measurement level, patients age, gender and the shape of mandibular shape were also analyzed. Results Lingual distance and lingual distal distance of the root and bone cortex were the most limiting factors in value. The lingual distance was smaller in levels at the crown side than that in the apical level. There was a positive correlation between the distal distance and the lingual distal distance. There was no significant correlation between lingual distal distance and distance between distal edge of crown and anterior edge of mandibular ascending branch.There was no significant correlation between the lingual distal distance and the age, genderor the projection measures related to mandibular morphology. Conclusion The distance between the root and the lingual distal cortical bone may be the limiting factor for distal movement of mandibular molars. The distance between the mandibular second molar and the anterior edge of the mandibular ascending branch does not reflect the spatial situation of the distal movement of the molars. There is no significant correlation between the distal movement space of mandibular molars and the age, genderor mandibular morphology of patients. |
| format | Article |
| id | doaj-art-e1bfd16373474276a6ffd6585dab7342 |
| institution | Kabale University |
| issn | 1003-9872 |
| language | zho |
| publishDate | 2024-12-01 |
| publisher | Editorial Office of Stomatology |
| record_format | Article |
| series | Kouqiang yixue |
| spelling | doaj-art-e1bfd16373474276a6ffd6585dab73422025-01-14T01:01:06ZzhoEditorial Office of StomatologyKouqiang yixue1003-98722024-12-01441288789110.13591/j.cnki.kqyx.2024.12.002Evaluation of cortical limitation of the mandibular second molar distalization with cone beam computed tomographyCHENG Ye, ZENG Weihao, LI Huang, LEI Lang0Department of Orthodontics, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing 210000, ChinaObjective To measure the bone mass around the root of mandibular second molar and explore the limiting factors and related factors affecting the distal movement of mandibular second molar. Methods CBCT samples of patients before orthodontic treatment were collected. The alveolar bone width, root width, as well as the distance between root and bone cortex were measured at different levels. Distance between distal edge of crown and anterior edge of mandibular ascending branchwas also measured.The lateral cephalic film was generated for routine projection measurement. The correlation of the measurement index and the measurement level, patients age, gender and the shape of mandibular shape were also analyzed. Results Lingual distance and lingual distal distance of the root and bone cortex were the most limiting factors in value. The lingual distance was smaller in levels at the crown side than that in the apical level. There was a positive correlation between the distal distance and the lingual distal distance. There was no significant correlation between lingual distal distance and distance between distal edge of crown and anterior edge of mandibular ascending branch.There was no significant correlation between the lingual distal distance and the age, genderor the projection measures related to mandibular morphology. Conclusion The distance between the root and the lingual distal cortical bone may be the limiting factor for distal movement of mandibular molars. The distance between the mandibular second molar and the anterior edge of the mandibular ascending branch does not reflect the spatial situation of the distal movement of the molars. There is no significant correlation between the distal movement space of mandibular molars and the age, genderor mandibular morphology of patients.https://www.stomatology.cn/fileup/1003-9872/PDF/1735180919057-417513159.pdf|mandibular second molar|orthodontic tooth movement|roots|bone limitation|cbct |
| spellingShingle | CHENG Ye, ZENG Weihao, LI Huang, LEI Lang Evaluation of cortical limitation of the mandibular second molar distalization with cone beam computed tomography Kouqiang yixue |mandibular second molar|orthodontic tooth movement|roots|bone limitation|cbct |
| title | Evaluation of cortical limitation of the mandibular second molar distalization with cone beam computed tomography |
| title_full | Evaluation of cortical limitation of the mandibular second molar distalization with cone beam computed tomography |
| title_fullStr | Evaluation of cortical limitation of the mandibular second molar distalization with cone beam computed tomography |
| title_full_unstemmed | Evaluation of cortical limitation of the mandibular second molar distalization with cone beam computed tomography |
| title_short | Evaluation of cortical limitation of the mandibular second molar distalization with cone beam computed tomography |
| title_sort | evaluation of cortical limitation of the mandibular second molar distalization with cone beam computed tomography |
| topic | |mandibular second molar|orthodontic tooth movement|roots|bone limitation|cbct |
| url | https://www.stomatology.cn/fileup/1003-9872/PDF/1735180919057-417513159.pdf |
| work_keys_str_mv | AT chengyezengweihaolihuangleilang evaluationofcorticallimitationofthemandibularsecondmolardistalizationwithconebeamcomputedtomography |