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Treatment stability with the eruption guidance appliance
Guilherme Janson1, Alexandre Nakamura, Kelly Chiqueto
1Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil. jansong@travelnet.com.br
Summary
The eruption guidance appliance offers stable long-term correction for Class II malocclusions, though some relapse in overbite and anterior crowding may occur. Overall occlusion remains stable post-treatment.
Area of Science:
- Orthodontics
- Dental Malocclusion Correction
- Long-term Treatment Stability
Background:
- Eruption guidance appliances are established for Class II malocclusion correction.
- Limited research exists on the long-term stability of changes induced by these appliances.
Purpose of the Study:
- To evaluate the long-term stability of dentoskeletal and occlusal changes following eruption guidance appliance therapy.
Main Methods:
- Thirty-nine patients were assessed using cephalometric, peer assessment rating (PAR), and Little irregularity indices.
- Data collected pre-treatment, post-treatment, and post-retention.
- Statistical analysis included one-way ANOVA and t-tests.
Main Results:
- Cephalometrically, overjet and molar relationships were stable long-term; overbite showed significant relapse.
- Occlusal outcomes, measured by PAR index, were stable.
- Anterior tooth crowding, assessed by Little irregularity index, significantly relapsed.
Conclusions:
- Eruption guidance appliance therapy provides stable long-term overjet and molar relationship correction.
- Relapse observed in overbite and anterior tooth crowding requires attention.
- Overall occlusal correction stability is demonstrated.
