3D Nonlinear finite element analysis of suitable loading force during mandibular anterior teeth intrusing through improved segment arch
- VernacularTitle:改良片段弓技术压低下前牙过程中适宜加载力值的三维非线性有限元分析
- Author:
Shijun LU
;
Xiaoyu NI
;
You HUANG
;
Zhendong WANG
;
Lin WANG
- Publication Type:Journal Article
- Keywords:
Improved segmental arch;
Intrusive arch;
Intrusion of anterior teeth;
Nonlinear finite element analysis
- From:
Journal of Medical Postgraduates
2015;(1):74-78
- CountryChina
- Language:Chinese
-
Abstract:
Objective The Improved segmental arch technique can effectively intrude incisors and correct deep overbites. To research its biomechanical characteristics, we reconstruct 3D nonlinear finite element model of mandibular teeth with improved segmen-tal arch, study the biomechanical characteristics and the suitable loading force of intrusion arch. Methods Combined with the re-sults of previous research, we complete the reconstruction of 3D nonlinear finite element model of mandibular teeth with improved seg-mental arch.Then, we set loading force of intrusion arch five conditions from 0.2 N~0.6 N, calculate the movement trend and stress distribution of improved segmental arch. Results In the five conditions of improved segmental arch, lateral incisors and canines in-truded and tipped labially, first molars tipped distally and rotated. In addition, the moment the initial loading force of intrusive arch in-creased, the movement of these teeth increased. However, other teeth did not move clearly. When the initial loading force of improved segment arch was 0.5 N, it can achieve appropriate intrusion of anterior teeth. Conclusion Under an appropriate intrusive force, improved segment arch can effectively intrude incisors and control the extrusion of posterior teeth. It can be used to correct the deep overbites, especially with high mandibular planes, gummy smile or adult stage.
