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Risk factors for orthodontic fixed retention failure: A retrospective controlled study
Kaat Verschueren1, Amit Arvind Rajbhoj1, Giacomo Begnoni1
1Department of Oral Health Sciences-Orthodontics, KU Leuven and Dentistry, University Hospitals Leuven, Leuven, Belgium.
Korean Journal of Orthodontics
|August 31, 2023
Summary
Fixed orthodontic retention failure is linked to habits like nail biting and abnormal tongue function. Further research with larger groups is recommended to confirm these findings on retainer success.
Area of Science:
- Orthodontics
- Dental Research
Background:
- Fixed orthodontic retainers are crucial for maintaining treatment outcomes.
- Retention failure can lead to relapse, necessitating further intervention.
Purpose of the Study:
- To explore the relationship between fixed orthodontic retention failure and patient- or treatment-related factors.
- Identify key predictors of orthodontic retainer failure.
Main Methods:
- Retrospective and prospective study design including patients with and without retention failure.
- Comparison of demographic, occlusal, and habit-related factors between groups.
- Statistical analysis using Fisher exact test and Mann-Whitney U test.
Main Results:
- Significant correlations found between mandibular retention failure and arch length discrepancy, post-treatment growth, nail biting, and abnormal tongue function.
- Maxillary retention failure associated with mandibular interproximal reduction and abnormal tongue function.
Conclusions:
- Parafunctional habits, including nail biting and abnormal tongue function, are correlated with fixed retention failure.
- Larger prospective studies are needed to validate these associations and improve retention strategies.

