Influence of insertion torque on biomechanical characteristics at implant-bone interface
- VernacularTitle:不同植入扭矩对种植体骨界面生物力学特性的影响
- Author:
Xi DING
1
;
Xing-hao ZHU
1
;
Zhi LIN
1
;
Sheng-hui LIAO
2
;
Jian-jing HUANG
1
;
Xiu-hua ZHANG
1
Author Information
1. Department of Stomatology, the First Hospital Affiliated to Wenzhou Medical College
2. School of Information Science and Engineering, Central South University
- Publication Type:Journal Article
- Keywords:
Dental implants;
Torque;
Finite element analysis;
Stress;
Strain;
Loads
- From:
Journal of Medical Biomechanics
2013;28(2):E184-E188
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the influence of different insertion torque values on stress and strain distributions at implant-bone interface. Methods The three-dimensional finite element model of the whole mandible with dental implants for immediate loading was created by CT scanning and self-developed USIS (universal surgical integration system) software. The insertion torque values of dental implants were supposed to be 0、15、25 N•cm3, respectively. The values of Von Mises stress and strain at implant-bone interface were calculated with ANSYS software, when the dental implants were loaded with vertical and buccolingual force at a 45°oblique angle of 150 N. Results When the dental implants under the three insertion torques were loaded with the vertical force, the maximum Von Mises stress was 33.6, 56.4, 69.6 MPa and the maximum strain was 5 157, 8 645, 15 630 με, respectively, while loaded with the buccolingual force, the maximum Von Mises stress was 95.3, 100.6, 108.3 MPa and the maximum strain was 17 110, 18 690, 21 380 με, respectively. Conclusions With the increased torque value of dental implants, the stress and strain at the implant-bone interface were both increased, but the increase was much slower under buccolingual loading than that under vertical loading.
