Related Experiment Videos
[Stability of teeth alignment after orthodontic treatment]
Yan Liu1, Tian-min Xu, Jiu-xiang Lin
1Department of Orthodontics, Peking University School of Stomatology, Beijing 100081, China.
Summary
Orthodontic treatment relapse is more common in the lower arch than the upper arch. Factors like jaw changes and lower incisor position influence lower arch crowding stability after retention.
Area of Science:
- Orthodontics
- Dental Arch Stability
- Post-treatment Relapse
Context:
- Investigating long-term incisor alignment stability after orthodontic treatment is crucial for treatment success.
- Understanding factors contributing to relapse aids in developing more effective retention strategies.
Purpose:
- To evaluate the relapse of incisor alignment following orthodontic treatment.
- To identify potential factors associated with the stability of incisor alignment during the retention period.
Summary:
- A study of 72 orthodontic cases revealed that while both upper and lower incisor alignment improved post-treatment, relapse occurred during follow-up.
- The lower arch exhibited greater irregularity increase compared to the upper arch.
- Statistical analysis indicated significant correlations between lower arch crowding changes and factors such as sagittal/vertical jaw changes, lower incisor position, decreased lower canine arch width, Bolton Index, and sex.
Impact:
- The findings highlight that upper arch alignment is more stable post-orthodontic treatment than the lower arch.
- Identified factors provide insights into managing lower arch crowding relapse, potentially improving long-term orthodontic outcomes.