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Updated: May 27, 2026
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Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition
Published on: February 23, 2024
Three-dimensional assessment of maxillary changes associated with bone anchored maxillary protraction
Tung Nguyen1, Lucia Cevidanes, Marie A Cornelis
1Department of Orthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC 27599-7450, USA. nguyentu@dentistry.unc.edu
Summary
Bone-anchored maxillary protraction significantly advances the maxilla and zygomas in growing Class III patients. This orthodontic treatment offers effective skeletal changes for malocclusion correction.
Area of Science:
- Orthodontics
- Craniofacial Surgery
- Biomaterials
Background:
- Class III malocclusion is a common skeletal discrepancy.
- Bone-anchored maxillary protraction (BAMP) is an effective treatment for Class III malocclusion.
- Understanding 3D changes in craniofacial structures is crucial for treatment optimization.
Purpose of the Study:
- To evaluate 3D changes in the maxilla and surrounding structures after BAMP.
- To assess hard and soft tissue alterations following BAMP.
- To analyze changes in circummaxillary sutures post-BAMP.
Main Methods:
- 25 Class III patients (9-13 years) underwent BAMP with miniplates.
- Cone-beam computed tomography (CBCT) scans were taken pre- and post-treatment.
- 3D models were generated, registered to the cranial base, and analyzed using color maps.
Main Results:
- The maxilla exhibited a mean forward displacement of 3.7 mm.
- Zygomas and maxillary incisors showed forward movement of 3.7 mm and 4.3 mm, respectively.
- Significant orthopedic changes were observed in the craniofacial complex.
Conclusions:
- BAMP effectively induces orthopedic changes in the maxilla and zygomas.
- This treatment modality is beneficial for growing patients with Class III malocclusions.
- BAMP offers a predictable approach for skeletal correction in orthodontics.
