Spring의 lumen size와 helical coil 형성 위치 변화가 교정력에 미치는 영향
Impact of Lumen Size and Helical Coil Place Change in Spring on Orthodontic Force
이규선, 이선경, 김복동,
소속 상세정보
이규선 ( Lee Gyu-Sun ) - 동남보건대학 치기공과
이선경 ( Lee Sun-Kyoung ) - 경희대학교 치과대학 예방사회치과학교실 및 구강생물연구소
김복동 ( Kim Bok-Dong ) - (주)진성기업 특수선사업부
KMID : 0362120110330040331
Abstract
Purpose: The purpose of this study was to impact of force system change in finger spring that add helical coil one round on orthodontic force. Methods: The following conclusions were drawn from the experiment conducted after bending 90 samples with a CNC wire forming machine while changing the height and lumen size to 1mm - 3mm - 5mm and 2mm - 3mm - 4mm respectively in the coil of the force system in finger spring added with one wheel of helical coil of 18-8 stainless steel round wire (, spring hard) from Jinsung Co. in domestic market under the following conditions: Laboratory name = Instron 5942; Temperature() = 18.00; Humidity(%) = 50.00; Rate 1 = 10.00000 mm/min; Compressive extension = 5.0mm. Results: When Coil height is 1, 3, 5mm and lumen size is 2, 3, 4mm reduce finger spring as mean value of compressive extension occasion maximum load(mN) increases as coil height rises, and lumen size grows to 5.0mm. And was expose that compressive load(mN) increases as coil position of finger spring rises and increase as lumen size is decrescent. Conclusion: As the adherence height of coil was raised from 1mm through 3mm to 5mm, compressive load increased. As the lumen size increased from 2mm through 3mm to 4mm, compressive load decreased. Therefore, these results suggest that it is desirable to lower the coil height and enlarge the lumen size to enhance the biomechanical efficiency of finger spring when manufacturing the finger spring for removable orthodontic devices.
키워드
finger spring; force system; lumen size; orthodontic force
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