Study on canine impaction of adolescents in Luzhou through X-ray flims

Objective:To investigate the canine impaction of adolescents in Luzhou through X-ray flims. Method:1800 panoramic radiographs of adolescents aged 12 ~14 were chosen to identify impacted canine and to anlyze the sites,types and gender ratio for canine impaction. Result:The incidence of canine impaction was 3.72 %. The ratio between male and female Was 1:1.79;The incidence of maxillary canine impaction was 3.33 % and the incidence of impacted mandibular canines was 0.33 %. There was only one patient had impacted maxillary and mandibular canines. The incidence of mesial impacted canines was found to be 92 % and the incidence of canine transmigration was 0.22 %. Conclusion:There were more unilateral maxillary canine impaction and more women in patients,and the most frequently impacted type was mesial impaction.