Korean J Orthod.
2009 Oct;39(5):278-288.
Finite-element analysis of the shift in center of resistance of the maxillary dentition in relation to alveolar bone loss
- Affiliations
-
- 1Department of Orthodontics, University of Ulsan College of Medicine, Asan Medical Center, Korea.
- 2Graduate School of Clinical Dental Science, The Catholic University of Korea, Korea.
- 3Division of Orthodontics, Department of Dentistry, College of Medicine, The Catholic University of Korea, Seoul St. Mary's Hospital, Korea.
- 4Division of Orthodontics, Department of Dentistry, School of Medicine, Ewha Womans University, Korea.
- 5Division of Orthodontics, Department of Dentistry, College of Medicine, The Catholic University of Korea, Uijongbu St. Mary's Hospital, Korea.
- 6Division of Orthodontics, Department of Dentistry, College of Medicine, The Catholic University of Korea, St. Mary's Hospital, Korea. dmoss1@hanmail.net
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.
- Full Text Links
-
- Actions
-
Cited
- CITED
-
- Close
- Share
-
- Similar articles
-
- A finite element analysis of the center of resistance of a maxillary first molar
- Finite-element investigation of the center of resistance of the maxillary dentition
- Three-dimensional finite element analysis on intrusion of upper anterior teeth by three-piece base arch appliance according to alveolar bone loss
- A three-dimensional finite element analysis on the location of center of resistance during intrusion of upper anterior teeth
- Finite-element analysis of the center of resistance of the mandibular dentition
