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Updated: Jul 18, 2026
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Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition
Published on: February 23, 2024
The displaced maxillary canine--a retrospective study
Torsten Grande1, Annemarie Stolze, Heiko Goldbecher
1Department of Orthodontics, University of Hamburg, 20246 Hamburg, Germany. torstengrande@hotmail.com
Summary
Orthodontic re-alignment of displaced maxillary canines averaged 1.9 years. Panoramic radiographs alone are insufficient for deciding between canine removal and orthodontic treatment due to lack of correlation with treatment duration.
Area of Science:
- Orthodontics
- Dentofacial Orthopedics
- Radiology
Background:
- Retained maxillary canines can present significant displacement.
- Decisions regarding treatment (surgical removal vs. orthodontic re-alignment) are crucial.
Purpose of the Study:
- To evaluate orthodontic re-alignment of displaced maxillary canines.
- To correlate canine displacement severity with treatment duration and side effects.
- To determine if panoramic radiographs alone can guide treatment decisions.
Main Methods:
- Analysis of 59 displaced maxillary canines on panoramic radiographs.
- Measurement of canine distance and inclination to the occlusal plane.
- Assessment of crown tip position, mesiodistal root deviations, treatment length, root resorptions, and marginal bone defects.
Main Results:
- Average treatment time was 1.9 years.
- No significant correlation found between displacement degree (inclination, distance, position) or root deviation and treatment duration.
- Root resorptions occurred in 15.3% and marginal bone defects in 40.7% of cases.
Conclusions:
- Orthodontic re-alignment of displaced maxillary canines is feasible but lengthy.
- Panoramic radiographs are inadequate for solely determining the need for surgical extraction versus orthodontic treatment.
- Comprehensive radiographic assessment is necessary for treatment planning.
