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Stability of anterior openbite treated with crib therapy
G J Huang1, R Justus, D B Kennedy
1Department of Orthodontics, School of Dentistry, University of Washington, Seattle 98195.
The Angle Orthodontist
|January 1, 1990
Summary
Crib therapy significantly increased overbite in openbite patients. Achieving a positive overbite during treatment ensures long-term stability, regardless of growth status, potentially due to tongue posture changes.
Area of Science:
- Orthodontics
- Dental Research
Background:
- Openbite malocclusion presents treatment challenges.
- Crib therapy is utilized for correcting openbite.
- Understanding long-term stability is crucial for treatment success.
Purpose of the Study:
- To evaluate the effectiveness of crib therapy in openbite patients.
- To assess the stability of overbite correction post-treatment.
- To compare treatment outcomes in growing versus nongrowing patients.
Main Methods:
- Retrospective analysis of 33 openbite patients treated with cribs.
- Division of patients into growing (n=26) and nongrowing (n=7) groups.
- Measurement of overbite changes during treatment and post-treatment follow-up.
Main Results:
- Significant overbite increase observed in both growing and nongrowing groups during treatment.
- Nongrowing group showed further overbite increase post-treatment.
- Relapse occurred in 17.4% of growing patients but none of the nongrowing patients.
- All patients achieving positive overbite during treatment maintained it post-treatment.
Conclusions:
- Crib therapy effectively increases overbite in openbite patients.
- Achieving a positive overbite during treatment predicts long-term stability.
- Treatment stability with cribs is favorable for both growing and nongrowing individuals, possibly linked to tongue posture modification.
