Three-dimensional finite element analysis of factors affecting stability of anchorage in zygomatic alveolar ridge
10.13591/j.cnki.kqyx.2025.02.004
- VernacularTitle:颧牙槽嵴支抗稳定性影响因素的三维有限元分析
- Author:
Ke LIU
1
;
Shijie XUAN
;
Xin LIU
Author Information
1. 口颌系统重建与再生全国重点实验室,国家口腔疾病临床医学研究中心,陕西省口腔疾病临床医学研究中心,第四军医大学第三附属医院正畸科,陕西西安(710032)
- Publication Type:Journal Article
- Keywords:
micro-implant;
three dimensional finite element analysis;
screw angle;
length
- From:
STOMATOLOGY
2025;45(2):100-104
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the influence of micro-implant length and screw angle on stress distribution and displacement of micro-implant bone interface when micro-implant was implanted in zygomatic alveolar ridge and bear a certain load,in order to provide certain theoretical basis for micro-implant selection and further optimization design in clinical practice.Methods A three-dimensional finite element model of the jaw in the zygomatic alveolar ridge region was established using ANSYS software.At the same time,35 kinds of micro-threaded implants with length of 8,9,10,11,12 mm and angle of 30°,45°,60°,75°,90°,105°,120° were estab-lished.The micro-implant was simulated to be implanted in the jaw bone,and the implantation model was established.Stress analysis was performed on the bone interface of the micro-implant.Results The maximum stress of micro-implant bone interface occurred in the bone cortex.The maximum stress value of buccal cortical bone,cancellous bone and micro-implant displacement decreased with the increase of screw length.The angle of screw had little effect on the maximum stress and displacement of micro-implant-bone interface.Conclusion The screw length has an impact on stress distribution of micro-implant bone interface.The micro-implant with longer length can improve its stability in zygomatic alveolar ridge.
