Biomechanical analysis of distalization of mandibular molars by placing a mini-plate: A finite element study
박명순, Na Yong-Hyun, 박민봉, 안장훈,
소속 상세정보
박명순 ( Park Myung-Soon ) - Hallym University Dongtan Sacred Heart Hospital Department of Orthodontics
( Na Yong-Hyun ) - AbleMAX Inc.
박민봉 ( Park Min-Bong ) - Private practice
안장훈 ( Ahn Jang-Hoon ) - Hallym University Kangnam Sacred Heart Hospital Department of Orthodontics
KMID : 0361920170470050289
Abstract
Objective: The objective of this study was to analyze the patterns of toothmovements when distalization of mandibular molars using a mini-plate tookplace. A finite element analysis was applied to analyze patterns of toothmovements.
Methods: The model of the mandible and teeth were used to builda finite element analysis model, and a mini-plate was inserted in the mandibular ramus. Two different orthodontic forces were established for displacement of mandibular molars. Orthodontic forces were applied at the level of the bracket and at the level of the cemento-enamel junction in the mandibular canine respectively.
Results: Applying orthodontic forces at the level of the cementoenamel junction resulted in a greater biomechanical bodily movement in distalization of the mandibular molars compared to when the orthodontic forces were applied at the level of the bracket. Applying orthodontic forces to the cemento-enamel junction also resulted in unwanted greater extrusive movements in distalization of the mandibular molars compared to the bracket level.
Conclusions: With considering the mode of orthodontic teeth movement, applying different vertical orthodontic forces for distalization of mandibular molars can lead to more effective distalization of teeth.
키워드
Finite element analysis; Distalization; Mandibular molars; Mini-plate
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