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Local factors relating to mandibular canine impaction: A retrospective study
Rosanna Guarnieri1, Francesca Germanò1, Giulia Sottile2
1Department of Oral and Maxillofacial Sciences, School of Dentistry, Sapienza University of Rome, Rome, Italy.
Summary
Impacted mandibular canines often present with persistent deciduous teeth and mesial inclination. This condition is significantly linked to increased mandibular incisor inclination (IMPA).
Area of Science:
- Dentistry
- Orthodontics
- Oral Surgery
Background:
- Mandibular canine impaction and transmigration are common orthodontic concerns.
- Understanding their characteristics and associations with local factors is crucial for diagnosis and treatment planning.
Purpose of the Study:
- To investigate the characteristics of impacted and transmigrated mandibular canines.
- To explore associations between these impactions and factors like mandibular incisor inclination, skeletal class, and symphysis width.
Main Methods:
- Retrospective observational study of 102 orthodontic patients.
- Analysis of panoramic radiographs and lateral cephalograms.
- Statistical analysis using chi-square, t-tests, and ANOVA.
Main Results:
- Unilateral, buccal impaction and deciduous canine presence were prevalent.
- 39.2% of impacted canines showed transmigration.
- Persistence of deciduous canine and mesial axial inclination of impacted canine were significant findings (P < 0.0001).
- Significant association found between mandibular canine impaction and increased incisor inclination (IMPA) (P = 0.009).
Conclusions:
- Mesial canine cusp movement and persistent deciduous canine are frequent in mandibular canine impaction.
- Accentuated vestibular inclination of mandibular incisors is significantly associated with mandibular canine impaction.
