Numerical study on the stability of micro-implant with different pitchs for immediate loading
- VernacularTitle:螺距对微植体即刻加载稳定性影响的数值研究
- Author:
Yongqiang XU
;
Daiquan ZHANG
;
Wentao JIANG
;
Yubo FAN
- Publication Type:Journal Article
- Keywords:
Micro-implant;
Pitch;
Finite element;
Immediate loading
- From:
Journal of Medical Biomechanics
2009;24(6):439-443
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the stability of micro-implant orthodontic anchorage(MA)with different pitch in the case of immediate loading.Method Employing 3D finite element analysis method,the stress and dis-placement distribution on the bone interface of MIA with different pitch(0.3 mm、0.5 mm、0.7 mm and 1.0 mm,respectively),which was 1.47 N loaded vertically in the major axis direction,were analyzed.Result The pitch affected the stress distribution significantly,because the maximum stress increased with the pitch decreasing and the impact of pitch on stress distribution on neck and central locations of MIA were different;to decrease the pitch could reduce the max displacement of the jaw,but the impact of pitch on displacement distribution of MIA was not significant.Condusions In the case of immediate loading.MIA with pitch 0.5 mm-0.7 mm is suggested to be selected as orthodontic anchorage in the clinic.
