Biomechanical Effects of Various Bone-Implant Interfaces on the Stability of Orthodontic Miniscrews: A Finite Element Study

Overview

Journal J Healthc Eng

Specialty Biomedical Engineering

Date 2017 Oct 26

PMID 29065641

Citations 1

Authors

FaBing Tan

Chao Wang

Chongshi Yang

Yuanding Huang

Yubo Fan

Affiliations

Soon will be listed here.

Abstract

Introduction: Osseointegration is required for prosthetic implant, but the various bone-implant interfaces of orthodontic miniscrews would be a great interest for the orthodontist. There is no clear consensus regarding the minimum amount of bone-implant osseointegration required for a stable miniscrew. The objective of this study was to investigate the influence of different bone-implant interfaces on the miniscrew and its surrounding tissue.

Methods: Using finite element analysis, an advanced approach representing the bone-implant interface is adopted herein, and different degrees of bone-implant osseointegration were implemented in the FE models. A total of 26 different FE analyses were performed. The stress/strain patterns were calculated and compared, and the displacement of miniscrews was also evaluated.

Results: The stress/strain distributions are changing with the various bone-implant interfaces. In the scenario of 0% osseointegration, a rather homogeneous distribution was predicted. After 15% osseointegration, the stress/strains were gradually concentrated on the cortical bone region. The miniscrew experienced the largest displacement under the no osseointegra condition. The maximum displacement decreases sharply from 0% to 3% and tends to become stable.

Conclusion: From a biomechanical perspective, it can be suggested that orthodontic loading could be applied on miniscrews after about 15% osseointegration without any loss of stability.

Citing Articles

Shape Optimization of Bone-Bonding Subperiosteal Devices with Finite Element Analysis.

Ogasawara T, Uezono M, Takakuda K, Kikuchi M, Suzuki S, Moriyama K Biomed Res Int. 2018; 2017:3609062.

PMID: 29392133 PMC: 5748129. DOI: 10.1155/2017/3609062.

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