Distalization pattern of whole maxillary dentition according to force application points
성의향, 김성진, Chung Youn-Sic, 박영철, Yu Hyang-Seog, 이기준,
소속 상세정보
성의향 ( Sung Eui-Hyang ) - Yonsei University School of Dentistry Department of Orthodontics
김성진 ( Kim Sung-Jin ) - Yonsei University School of Dentistry Department of Orthodontics
( Chung Youn-Sic ) - Ewha Womans University Medical Center Department of Dentistry Division of Orthodontics
박영철 ( Park Young-Chel ) - Yonsei University School of Dentistry Department of Orthodontics
( Yu Hyang-Seog ) - Yonsei University School of Dentistry Department of Orthodontics
이기준 ( Lee Kee-Joon ) - Yonsei University School of Dentistry Department of Orthodontics
KMID : 0361920150450010020
Abstract
Objective: The purpose of this study was to observe stress distribution and displacement patterns of the entire maxillary arch with regard to distalizing force vectors applied from interdental miniscrews.
Methods: A standard three-dimensional finite element model was constructed to simulate the maxillary teeth, periodontal ligament, and alveolar process. The displacement of each tooth was calculated on x, y, and z axes, and the von Mises stress distribution was visualized using color-coded scales.
Results: A single distalizing force at the archwire level induced lingual inclination of the anterior segment, and slight intrusive distal tipping of the posterior segment. In contrast, force at the high level of the retraction hook resulted in lingual root movement of the anterior segment, and extrusive distal translation of the posterior segment. As the force application point was located posteriorly along the archwire, the likelihood of extrusive lingual inclination of the anterior segment increased, and the vertical component of the force led to intrusion and buccal tipping of the posterior segment. Rotation of the occlusal plane was dependent on the relationship between the line of force and the possible center of resistance of the entire arch.
Conclusions: Displacement of the entire arch may be dictated by a direct relationship between the center of resistance of the whole arch and the line of action generated between the miniscrews and force application points at the archwire, which makes the total arch movement highly predictable.
키워드
Distalization; Entire arch; Finite element; Occlusal plane; Displacement
원문 및 링크아웃 정보
등재저널 정보