부정교합 환자에 있어 Facial axis와 상악치아의 위치관계에 관한 연구
A Study on the Positional Relationship Between the Facial Axis and Maxillary Teeth in Malocclusion
이동주, 문근,
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이동주 ( Lee Dong-Joo ) - 조선대학교 치과대학 교정학교실
문근 ( Moon Keun ) - 조선대학교 치과대학 교정학교실
KMID : 0353319890130010069
Abstract
This study was undertaken to examine the relationship between the facial axis and maxillary teeth and to,offer aids to diagnosis and treatment planning of malocclusion. Cephalometric headplates of 60 persons were traced and divided into three groups of Angle´s Class Ⅰ , ClassⅡ, Class [. Mean, standard deviation, t-test, and simple correlation coefficient were used to compare three groups.
The following results were obtained.
1. Facial axis angle was smallest in Class Ⅰ malocclusion and great in Class Ⅰ and Class Ⅱ malocclusion, but there was no significant difference statistcally.
2. Horizontal position of maxillary first molar did not show the significant difference among the malocclusions.
3. In Class 1 and Class I malocclusion, when the facial axis angle was more increased the maxillary first molar was positioned more posteriorly.
4. Distance between the facial axis and upper incisor was shortest in Class a malocclusion.
5. Facial convexity was greatest in Class I malocclusion and smallest in Class I malo cclusion, and there was significant difference among the each groups.
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