American Journal of Orthodontics and Dentofacial Orthopedics
Original articleInfluence of maxillary canine impaction characteristics and factors associated with orthodontic treatment on the duration of active orthodontic traction
Section snippets
Material and methods
This follow-up and retrospective study was approved by the Ethics and Research Committee of the Universidad Científica del Sur, Lima, Perú (00021). The sample involved 30 patients (11 male, 19 female; overall mean age 18.16 ± 7.32) attending a private clinic in Bogotá, Colombia, from 2010 to 2018 and treated by a single experienced orthodontist (G.A.R.-M.). The subjects included 45 MICs orthodontically tractioned to the occlusal plane with the use of a standardized protocol. The minimum sample
Results
The average duration of active orthodontic traction of the 45 MICs was an 8.40 ± 3.26 months (range 4-16 months). Tables II and III present descriptive statistics of all qualitative and quantitative variables evaluated as independent variables (predictors) in the MIC traction time (outcome variable).
A multiple linear regression model was used to evaluate the influence of the predictive variables on the duration of MIC traction (Table IV). Seven variables had a value of P <0.25 according to the
Discussion
An approximate prediction of orthodontic traction time of an MIC is useful for orthodontists because they could plan their treatment more accurately regarding the time involved in this traction and the patients could know in how much time they could have a harmonious smile. This duration of traction could be influenced by the characteristics of canine impaction and by factors associated with orthodontic treatment. Therefore, the purpose of the present study was to evaluate the influence of MIC
Conclusions
The duration of orthodontic traction of maxillary impacted canines of this study subjects is mainly influenced by the sex of the patient, the condition of bilateral impaction, canines impacted bicortically, and sectors close to the midline, and these factors may increase the traction time by a few months. Nevertheless, further independent studies with greater sample sizes are needed to confirm our results.
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All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest, and none were reported.