Publication detail
Micro finite element analysis of dental implants under different loading conditions
MARCIÁN, P. WOLFF, J. HORÁČKOVÁ, L. KAISER, J. ZIKMUND, T. BORÁK, L.
Czech title
Analýza různých zátěžných stavů dentálních implantátů na mikro úrovni pomocí MKP
English title
Micro finite element analysis of dental implants under different loading conditions
Type
journal article in Web of Science
Language
en
Original abstract
Osseointegration is paramount for the longevity of dental implants and is significantly influenced by biomechanical stimuli. The aim of the present study was to assess the micro-strain and displacement induced by loaded dental implants at different stages of osseointegration using finite element analysis (FEA). Computational models of two mandible segments with different trabecular densities were constructed using microCT data. Three different implant loading directions and two osseointegration stages were considered in the stress-strain analysis of the bone-implant assembly. The bony segments were analyzed using two approaches. The first approach was based on Mechanostat strain intervals and the second approach was based on tensile/compression yield strains. The results of this study revealed that bone surrounding dental implants is critically strained in cases when only a partial osseointegration is present and when an implant is loaded by buccolingual forces. In such cases, implants also encounter high stresses. Displacements of partially-osseointegrated implant are significantly larger than those of fully-osseointegrated implants. It can be concluded that the partial osseointegration is a potential risk in terms of implant longevity.
Czech abstract
Osseointegrace je nejdůležitější pro dlouhověkost zubních implantátů a je výrazně ovlivněna biomechanickými podněty. Cílem této studie bylo posoudit mikro-přetvoření a posun vyvolaný silami zatežující zubní implantáty v různých fázích osseointegrace pomocí analýzy konečných prvků (FEA).
English abstract
Osseointegration is paramount for the longevity of dental implants and is significantly influenced by biomechanical stimuli. The aim of the present study was to assess the micro-strain and displacement induced by loaded dental implants at different stages of osseointegration using finite element analysis (FEA). Computational models of two mandible segments with different trabecular densities were constructed using microCT data. Three different implant loading directions and two osseointegration stages were considered in the stress-strain analysis of the bone-implant assembly. The bony segments were analyzed using two approaches. The first approach was based on Mechanostat strain intervals and the second approach was based on tensile/compression yield strains. The results of this study revealed that bone surrounding dental implants is critically strained in cases when only a partial osseointegration is present and when an implant is loaded by buccolingual forces. In such cases, implants also encounter high stresses. Displacements of partially-osseointegrated implant are significantly larger than those of fully-osseointegrated implants. It can be concluded that the partial osseointegration is a potential risk in terms of implant longevity.
Keywords in Czech
Mikro analýza metodou konečných prvků; zubní implantáty; osseointegrace; intenzita napětí; intenzita přetvoření
Keywords in English
Micro finite element analysis; Dental implants; Osseointegration; Stress intensity; Strain intensity
Released
01.05.2018
ISSN
0010-4825
Number
96
Pages from–to
157–165
Pages count
9
BIBTEX
@article{BUT146684,
author="Petr {Marcián} and Jan {Wolff} and Ladislava {Horáčková} and Jozef {Kaiser} and Tomáš {Zikmund} and Libor {Borák},
title="Micro finite element analysis of dental implants under different loading conditions",
year="2018",
number="96",
month="May",
pages="157--165",
issn="0010-4825"
}