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논문 기본 정보

자료유형
학술저널
저자정보
Sewoong Oh (Pusan National University Dental Hospital) Youn-Kyung Choi (Pusan National University Hospital) Sung-Hun Kima (Pusan National University Dental Hospital) Ching-Chang Ko (The Ohio State University) Ki Beom Kimd (Saint Louis University) Yong-Il Kim (Pusan National University Dental Hospital)
저널정보
대한치과교정학회 대한치과교정학회지 대한치과교정학회지 제53권 제6호
발행연도
2023.11
수록면
420 - 430 (11page)

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초록· 키워드

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Objective: The purpose of this finite element method (FEM) study was to analyze the biomechanical differences and tooth displacement patterns according to the traction direction, methods, and sites for total distalization of the mandibular dentition using clear aligner treatment (CAT). Methods: A finite element analysis was performed on four FEM models using different traction methods (via a precision cut hook or button) and traction sites (mandibular canine or first premolar). A distalization force of 1.5 N was applied to the traction site by changing the direction from –30 to +30° to the occlusal plane. The initial tooth displacement and von Mises stress on the clear aligners were analyzed. Results: All CAT-based total distalization groups showed an overall trend of clockwise or counterclockwise rotation of the occlusal plane as the force direction varied. Mesiodistal tipping of individual teeth was more prominent than that of bodily movements. The initial displacement pattern of the mandibular teeth was more predominant based on the traction site than on the traction method. The elastic deformation of clear aligners is attributed to unintentional lingual tipping or extrusion of the mandibular anterior teeth. Conclusions: The initial tooth displacement can vary according to different distalization strategies for CAT-based total distalization. Discreet application and biomechanical understanding of traction sites and directions are necessary for appropriate mandibular total distalization.

목차

INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSION
CONCLUSIONS
REFERENCES

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