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논문 기본 정보

자료유형
학술저널
저자정보
Sun-Hye Baek (University of Ulsan College of Medicine) Hyun-Suk Cha (University of Ulsan College of Medicine) Jung-Yul Cha (Yonsei University) Yoon-Shik Moon (University of Ulsan College of Medicine) Sang-Jin Sung (University of Ulsan College of Medicine)
저널정보
대한치과교정학회 대한치과교정학회지 대한치과교정학회지 제42권 제4호
발행연도
2012.8
수록면
159 - 168 (10page)

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초록· 키워드

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Objective: The aims of this study were to investigate mandibular deformation under clenching and to estimate its effect on the stability f orthodontic mini-implants (OMI). Methods: Three finite element models were constructed using computed tomography (CT) images of 3 adults with different mandibular plane angles (A, low; B, average; and C, high). An OMI was placed between #45 and #46 in each model. Mandibular deformation under premolar and molar clenching was simulated. Comparisons were made between peri-orthodontic mini-implant compressive strain (POMI-CSTN) under clenching and orthodontic traction forces (150 g and 200 g). Results: Three models with different mandibular plane angles demonstrated different functional deformation characteristics. The compressive strains around the OMI were distributed mesiodistally rather than occlusogingivally. In model A, the maximum POMI-CSTN under clenching was observed at the mesial aspect of #46 (1,401.75 microstrain [μE]), and similar maximum POMI-CSTN was observed under a traction force of 150 g (1,415 μE). Conclusions: The maximum POMI-CSTN developed by clenching failed to exceed the normally allowed compressive cortical bone strains; however, additional orthodontic traction force to the OMI may increase POMI-CSTN to compromise OMI stability.

목차

INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSION
CONCLUSION
REFERENCES

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UCI(KEPA) : I410-ECN-0101-2014-515-000447495