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Updated: Jun 25, 2026
07:32
Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition
Published on: February 23, 2024
Incisor inclination--risk factor for palatally-impacted canines
Gabriele Lüdicke1, Winfried Harzer, Eve Tausche
1Department of Orthodontics, University Hospital Carl Gustav Carus, Technical University Dresden, Germany.
Summary
Patients with impacted canines often exhibit Class II, Division 2 malocclusion, characterized by specific upper incisor and maxillary size measurements. This suggests a higher risk for canine impaction in these individuals.
Area of Science:
- Orthodontics
- Dental Imaging
- Craniofacial Development
Background:
- Impacted canines are a common orthodontic concern.
- Understanding associated dental and skeletal patterns is crucial for diagnosis and treatment planning.
Purpose of the Study:
- To assess upper incisor torque and sagittal maxillary dimensions in patients with impacted canines.
- To identify potential risk factors for canine impaction.
Main Methods:
- Evaluation of panoramic radiographs, cephalograms, and study models in 199 patients with impacted canines.
- Determination of malocclusion prevalence, canine and incisor inclination, and maxillary size.
Main Results:
- 45% of patients presented with Class II, Division 2 malocclusion symptoms.
- Lower upper incisor inclination (U1/NA angle of 18.5°) and higher SNA angle (81.3°) were observed compared to neutral cases.
Conclusions:
- Upper incisor labial root torque does not appear to guide erupting canines in impaction cases.
- Patients exhibiting Class II, Division 2 malocclusion traits are identified as a risk group for canine impaction.
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