The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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Clinical predictors of potentially impacted canines in low-risk patients: A retrospective study in mixed dentition

  • Sergio Estelita Barros (Division of Orthodontics, Faculty of Dentistry, Federal University of Rio Grande do Sul) ;
  • Bianca Heck (Division of Orthodontics, Faculty of Dentistry, Federal University of Rio Grande do Sul) ;
  • Kelly Chiqueto (Division of Orthodontics, Faculty of Dentistry, Federal University of Rio Grande do Sul) ;
  • Eduardo Ferreira (Division of Orthodontics, Faculty of Dentistry, Federal University of Rio Grande do Sul)
  • Received : 2022.08.04
  • Accepted : 2022.12.28
  • Published : 2023.03.25
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Abstract

Objective: To evaluate the null hypothesis that there is no difference in a set of clinical predictors of potentially impacted canines between low-risk patients with and without displaced canines. Methods: The normal canine position group consisted of 30 patients with 60 normally erupting canines ranked in sector I (age, 9.30 ± 0.94 years). The displaced canine group comprised 30 patients with 41 potentially impacted canines ranked in sectors II to IV (age, 9.46 ± 0.78 years). Maxillary lateral incisor crown angulation, inclination, rotation, width, height, and shape, as well as palatal depth, arch length, width, and perimeter composed a set of clinical predictors, which were evaluated on digital dental casts. Statistical analyses consisted of group comparisons and variable correlations (p < 0.05). Results: There was a significant association between sex and mesially displaced canines. Unilateral canine displacement was more prevalent than bilateral displacement. The crown of the maxillary lateral incisors was significantly angulated more mesially and rotated mesiolabially in low-risk patients with displaced canines, who also had a shallower palate and shorter anterior dental arch length. Lateral incisor crown angulation and rotation, as well as palatal depth and arch length, were significantly correlated with the canine displacement severity. Conclusions: The null hypothesis was rejected. Maxillary lateral incisor angulation inconsistent with the "ugly duckling" stage as well as a shallow palate and short arch length are clinical predictors that can significantly contribute to the early screening of ectopic canines in low-risk patients.

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References

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