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Orthodontic relapse, apical root resorption, and crestal alveolar bone levels
Summary
Orthodontic relapse is linked to increased root resorption and decreased bone support. Even minor tooth movement may increase tissue loss, impacting long-term stability after orthodontic treatment.
Area of Science:
- Orthodontics
- Periodontology
- Dental Imaging
Background:
- Orthodontic treatment aims for stable, functional, and aesthetic results.
- Post-treatment relapse and associated tissue changes are significant clinical concerns.
Purpose of the Study:
- To investigate the relationship between orthodontic relapse and crestal alveolar bone support.
- To examine the association between relapse and root resorption in patients after orthodontic treatment.
Main Methods:
- Retrospective study of 36 patients at least 10 years post-orthodontic retention.
- Radiographic assessment (periapical, bitewing, cephalometric) of root resorption and crestal alveolar bone levels.
- Comparison between relapse (≥2mm mandibular anterior crowding) and non-relapse groups.
Main Results:
- Relapse group showed longer treatment duration and higher prevalence of root resorption.
- Significantly greater crestal alveolar bone loss observed in the relapse group.
- Smaller amounts of tooth translation were associated with increased root resorption and bone loss.
Conclusions:
- Orthodontic relapse may be associated with increased root resorption.
- Decreased crestal alveolar bone levels are linked to post-orthodontic relapse.
- Tooth movement distance may influence the extent of root resorption and bone loss.