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Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition
Published on: February 23, 2024
Long-term stability of unilateral posterior crossbite correction
Theodosia Bartzela1, Irmtrud Jonas
1Department of Orthodontics and Oral Biology, Radboud University Nijmegen Medical Centre, The Netherlands. t.bartzela@dent.umcn.nl
The Angle Orthodontist
|February 27, 2007
Summary
Orthodontic treatment for unilateral posterior crossbite shows high long-term stability. Tailoring treatment to individual needs, considering both upper and lower arches, is key for successful crossbite correction.
Area of Science:
- Orthodontics
- Pediatric Dentistry
- Craniofacial Development
Background:
- Unilateral posterior crossbite is a common malocclusion in the mixed dentition.
- Early intervention is often recommended, but treatment timing and stability require further investigation.
Purpose of the Study:
- To assess the long-term stability of unilateral posterior crossbite correction.
- To compare treatment outcomes between rapid and slow maxillary expansion.
- To evaluate the influence of treatment timing (early vs. late mixed dentition) on stability.
Main Methods:
- Longitudinal study evaluating patients treated with rapid or slow maxillary expansion.
- Plaster cast analysis at multiple time points over approximately 8 years.
- Assessment of midline deviation and skeletal classification.
Main Results:
- Approximately 80% of patients achieved long-term stability of corrected unilateral posterior crossbite.
- Over 70% of patients required treatment for mandibular midline deviation.
- 50% exhibited skeletal Class III morphology at the end of active treatment.
Conclusions:
- Individualized treatment planning is crucial for successful unilateral crossbite correction.
- Consideration of both maxillary and mandibular arches is essential, especially when a broad lower arch contributes to the etiology.
