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논문 기본 정보

자료유형
학술저널
저자정보
Bohm Choi (The Catholic University of Korea) Dong-Ok Lee (Private Practice) Sung-Seo Mo (The Catholic University of Korea) Seong-Hun Kim (Kyung Hee University) Ki-Ho Park (Kyung Hee University) Kyu-Rhim Chung (Ajou University) Gerald Nelson (University of California in San Francisco) Seong Ho Han (The Catholic University of Korea)
저널정보
대한치과교정학회 대한치과교정학회지 대한치과교정학회지 제41권 제6호
발행연도
2011.12
수록면
423 - 430 (8page)

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초록· 키워드

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Objective: To evaluate the extent and aspect of stress to the cortical bone after application of a lateral force to a two-component orthodontic mini-implant (OMI, mini-implant) by using three-dimensional finite element analysis (FEA). Methods: The 3D-finite element models consisted of the maxilla, maxillary first molars, second premolars, and OMIs. The screw part of the OMI had a diameter of 1.8 mm and length of 8.5 mm and was placed between the roots of the upper second premolar and the first molar. The cortical bone thickness was set to 1 mm. The head part of the OMI was available in 3 sizes: 1 mm, 2 mm, and 3 mm. After a 2 N lateral force was applied to the center of the head part, the stress distribution and magnitude were analyzed using FEA. Results: When the head part of the OMI was friction fitted (tapped into place) into the inserted screw part, the stress was uniformly distributed over the surface where the head part was inserted. The extent of the minimum principal stress suggested that the length of the head part was proportionate with the amount of stress to the cortical bone; the stress varied between 10.84 and 15.33 MPa. Conclusions: These results suggest that the stress level at the cortical bone around the OMI does not have a detrimental influence on physiologic bone remodeling. (Korean J Orthod 011;41(6): 423-430)

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INTRODUCTION
MATERIAL AND METHODSㅂ
RESULTS
DISCUSSION
CONCLUSION
REFERENCES

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UCI(KEPA) : I410-ECN-0101-2014-515-000447804