A longitudinal study on prediction of eruptive path and impaction of maxillary canine.
- Author:
Tae Won SON
1
;
Dong Joo LEE
Author Information
1. Department of Orthodontics, College of Dentistry, Chosun University, Korea.
- Publication Type:Original Article
- MeSH:
Female;
Humans;
Longitudinal Studies*;
Male;
Malocclusion
- From:Korean Journal of Orthodontics
1992;22(1):159-168
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
To predict eruptive path of maxillary canine, 13 male and 11 female malocclusions were longitudinally studied for 4 years. And to study frequency and distribution of impaction of maxillary canine, 1500 malocclusions were studied. The path, velocity and duration of maxillary canine eruption were determined by periodic angular and linear measurement using periodic orthopantomograms and cephalograms. The following results were obtained. 1. Maxillary canine was erupted with 14.5degrees distal tipping from initial stage 98.1degrees to final stage 83.6degrees of axial inclination on orthopantomogram. 2. Eruptive velocity of maxillary canine was fastest on stage 4, and mean eruptive velocity was 10.5mm per year on stage 4. 3. Eruption of maxillary canine was completed 12 year 5 months in male and 11 years 8 months in female. 4. To predict the duration for eruption completion by position of maxillary canine on cephalogram, regression equation was obtained. 5. Frequency of impaction of maxillary canine was 1.47% in malocclusion and more frequent in male. Distribution of buccal and palatal, right and left impaction was no different, but unilateral impaction was more frequent.
