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Finite-element analysis of the shift in center of resistance of the maxillary dentition in relation to alveolar bone loss

Title
Finite-element analysis of the shift in center of resistance of the maxillary dentition in relation to alveolar bone loss
Authors
Sung S.-J.Kim I.-T.Kook Y.-A.Chun Y.-S.Kim S.-H.Mo S.-S.
Ewha Authors
전윤식
SCOPUS Author ID
전윤식scopus
Issue Date
2009
Journal Title
Korean Journal of Orthodontics
ISSN
1225-5610JCR Link
Citation
vol. 39, no. 5, pp. 278 - 288
Indexed
SCOPUS; KCI WOS scopus
Abstract
Objective: The aim of this study was to investigate the changes in the center of resistance of the maxillary teeth in relation to alveolar bone loss. Methods: A finite element model, which included the upper dentition and periodontal ligament, was designed according to the amount of bone loss (0 mm, 2 mm, 4 mm). The teeth in each group were fixed with buccal and lingual arch wires and splint wires. Retraction and intrusion forces of 200 g for 4 and 6 anterior teeth groups and 400 g for the full dentition group were applied. Results: The centers of resistance were at 13.5 mm, 14.5 mm, 15 mm apical and 12 mm, 12 mm, 12.5 mm posterior in the 4 incisor group; 13.5 mm, 14.5 mm, 15 mm apical and 14 mm, 14 mm, 14.5 mm posterior in the 6 anterior teeth group; and 11 mm, 13 mm, 14.5 mm apical and 26.5 mm, 27 mm, 25.5 mm posterior in the full dentition group respectively according to 0 mm, 2 mm, 4 mm bone loss. Conclusions: The center of resistance shifted apically and posteriorly as alveolar bone loss increased in 4 and 6 anterior teeth groups. However, in the full dentition group, the center of resistance shifted apically and anteriorly in the 4 mm bone loss model.
DOI
10.4041/kjod.2009.39.5.278
Appears in Collections:
의학전문대학원 > 의학과 > Journal papers
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