Finite-element analysis of the shift in center of resistance of the maxillary dentition in relation to alveolar bone loss / 대한치과교정학회지
Korean Journal of Orthodontics
;
: 278-288, 2009.
Article
in Korean
| WPRIM
| ID: wpr-651329
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:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Periodontal Ligament
/
Splints
/
Tooth
/
Alveolar Bone Loss
/
Finite Element Analysis
/
Dentition
/
Incisor
Language:
Korean
Journal:
Korean Journal of Orthodontics
Year:
2009
Type:
Article
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