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Transverse skeletal base adaptations with Bionator therapy: a pilot implant study
Adriano Marotta Araujo1, Peter H Buschang, Ana Claudia Moreira Melo
1Department of Orthodontics, Araraquara School of Dentistry, Universidade Estadual Paulista, Araraquara, São Paolo, Brazil.
Summary
Bionator therapy significantly increased transverse width in the maxilla for Class II malocclusion patients. This orthodontic treatment shows potential for skeletal base adaptations in growing children.
Area of Science:
- Orthodontics
- Craniofacial Biology
- Pediatric Dentistry
Background:
- Class II Division 1 malocclusion is a common dental anomaly affecting facial growth.
- Early orthodontic intervention aims to guide skeletal development.
- The Bionator appliance is used to modify jaw growth patterns.
Purpose of the Study:
- To evaluate transverse skeletal base adaptations in children with Class II Division 1 malocclusion treated with a Bionator appliance.
- To compare maxillary and mandibular width changes between a Bionator treatment group and an untreated control group.
Main Methods:
- Randomized controlled trial with 25 patients (aged 6.9–11.2 years) with Class II Division 1 malocclusion.
- Patients were allocated to either a Bionator treatment group (n=14) or a control group (n=11).
- Cephalometric analysis using implants measured transverse changes in the maxilla and mandible over approximately 12 months.
Main Results:
- Both groups showed significant increases in posterior maxillary width.
- The Bionator treatment group exhibited significantly greater increases in posterior maxillary width compared to the control group.
- Greater, though not statistically significant, increases in mandibular width were observed in the treated group.
Conclusions:
- Bionator therapy induces significant transverse skeletal adaptations in the maxilla.
- The findings suggest that Bionator therapy can influence craniofacial development in patients with Class II Division 1 malocclusion.