Intrusion arch wire activation시 상악 견치에 가해진 초기응력의 유한요소법을 통한 고찰
A FEM ANALYSIS FOR INITIAL STRESS ON THE UPPER CANINE BY ORTHODONTIC FORCE OF INTRUSION ARCH WIRE ACTIVATION
강정원, 이재환, 명나혜,
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강정원 ( ) - 단국대학교 치과대학 교정학교실
이재환 ( ) - 단국대학교 치과대학 교정학교실
명나혜 ( ) - 단국대학교 치과대학 교정학교실
KMID : 0361919980280030391
Abstract
The purpose of this study was to find the distribution and measurement of compressive and tensile stress when intrusi- on arch wire is forced engage with upper canine and to analysis stress at each section through FEM. And we compare compressive and tensile ratio at each section. The results were as follows.
1. At FA point and cemento-enamel junction of upper canine, compressive and tensile force ratio is about the same. 2. At apex, compressive force is the four times as tensile force. ; In intrusion, we show root resorption at apex. 3. At Cemento-enamel junction, the compressive and tensile force show the maximun value except FA point.
키워드
유한요소법;intrusion arch wire;압축력;인장력;FEM;intrusion arch wire;compressive stress;tensile stress
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