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上顎犬齒의 萌出路豫側 및 埋伏에 關한 累年的硏究
A LONGITUDINAL STUDY ON PREDICTION OF ERUPTIVE PATH AND IMPACTION OF MAXILLARY CANINE

Korean Journal of Orthodontics 1992년 22권 1호 p.159 ~ 168

손태원, 이동주,

소속 상세정보

손태원 ( Son Tae-Won ) - 조선대학교 치과대학 교정학교실
이동주 ( Lee Dong-Joo ) - 조선대학교 치과대학 교정학교실

KMID : 0361919920220010159

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 14.5。 distal tipping from initial stage 98.1。 to final stage 83.6。 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.