Orthodontic treatment of impacted maxillary canines: an appraisal of prognostic factors.

Aim: The aim of the study was to evaluate the influence of pre-treatment radiographic features (alpha-angle, d-distance and s-sector) on the duration of active orthodontic traction of impacted maxillary canines treated by a combined surgical (flap approach) and orthodontic (direct traction to the center of the ridge) treatment.

Material And Methods: A study population of 168 patients (168 canines) was evaluated. Multiple regression analysis was used.

Results: Pre-treatment radiographic variables were associated significantly with the duration of orthodontic traction. Age, gender and site of impaction did not affect the duration of traction significantly.

Conclusions: Alpha-angle, d-distance and s-sector are valid indicators for the duration of orthodontic traction.