The three-dimensional nonlinear finite element analysis of force system of the "rocking-chair archwire".
- Author:
Li CHEN
1
;
Ding ZHANG
;
Min-kui FU
;
Shu-li SUN
;
Ying LIANG
Author Information
- Publication Type:Journal Article
- MeSH: Dental Stress Analysis; Finite Element Analysis; Humans; Malocclusion; therapy; Orthodontic Appliance Design; Orthodontic Wires; Orthodontics, Corrective; methods
- From: Chinese Journal of Stomatology 2004;39(3):239-241
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVEThe purpose of this study was to qualitatively and quantitatively analyze the initial force system of "rocking-chair archwire" on every tooth.
METHODSThree-dimensional finite element model of "rocking-chair archwire" was set up, and nonlinear method was used to analyze the force system.
RESULTSThe archwire exerted intruding force, labial force, lingual-root torque and mesial-labial moment on incisors; Extruding force, lingual-root torque and mesial-labial moment were applied on canines and premolars; The archwire also created intruding force, buccal force, buccal-root torque and mesial-labial moment on molars.
CONCLUSIONS"rocking-chair archwire" produced a complicated force system. While intruding incisors, molars and extruding premolars. It has a tendency to induce tooth rotation and tipping.
