Publication detail

Finite Element Analysis of Dental Implant Loading on Atrophic and Non-atrophic Cancellous and Cortical Mandibular Bone - a Feasibility Study

MARCIÁN, P. BORÁK, L. VALÁŠEK, J. KAISER, J. FLORIAN, Z. WOLFF, J.

Original Title

Finite Element Analysis of Dental Implant Loading on Atrophic and Non-atrophic Cancellous and Cortical Mandibular Bone - a Feasibility Study

English Title

Finite Element Analysis of Dental Implant Loading on Atrophic and Non-atrophic Cancellous and Cortical Mandibular Bone - a Feasibility Study

Type

journal article in Web of Science

Language

en

Original Abstract

The first aim of this study is to assess displacements and micro-strain induced on different grades of atrophic cortical and trabecular mandibular bone by axially loaded dental implants using finite element analysis (FEA). The second aim was to assess the micro-strain induced by different implant geometries and the levels of bone-to-implant contact (BIC) on the surrounding bone. Six mandibular bone segments demonstrating different grades of mandibular bone atrophy and various bone volume fractions (from 0.149 to 0.471) were imaged using a micro-CT device. The acquired bone STL models and implant (Brånemark, Straumann, and Ankylos) were merged into a three-dimensional finite elements structure. The mean displacement value for all implants was 3.1 um. Displacements were lower in the group with a strong BIC. The results indicated that the maximum strain values of cortical and cancellous bone increased with lower bone density. Strain distribution is the first and foremost dependent on the shape of bone and architecture of cancellous bone. The geometry of the implant, thread patterns, grade of bone atrophy and BIC all affect the displacement and micro-strain on the mandible bone. Preoperative finite element analysis could offer improved predictability in the long-term outlook of dental implant restorations.

English abstract

The first aim of this study is to assess displacements and micro-strain induced on different grades of atrophic cortical and trabecular mandibular bone by axially loaded dental implants using finite element analysis (FEA). The second aim was to assess the micro-strain induced by different implant geometries and the levels of bone-to-implant contact (BIC) on the surrounding bone. Six mandibular bone segments demonstrating different grades of mandibular bone atrophy and various bone volume fractions (from 0.149 to 0.471) were imaged using a micro-CT device. The acquired bone STL models and implant (Brånemark, Straumann, and Ankylos) were merged into a three-dimensional finite elements structure. The mean displacement value for all implants was 3.1 um. Displacements were lower in the group with a strong BIC. The results indicated that the maximum strain values of cortical and cancellous bone increased with lower bone density. Strain distribution is the first and foremost dependent on the shape of bone and architecture of cancellous bone. The geometry of the implant, thread patterns, grade of bone atrophy and BIC all affect the displacement and micro-strain on the mandible bone. Preoperative finite element analysis could offer improved predictability in the long-term outlook of dental implant restorations.

Keywords

Dental Implant, Micro-CT, Mandible, Finite Element Analysis, Bone-Implant-Contact

RIV year

2014

Released

18.12.2014

Publisher

ELSEVIER SCI LTD

Location

ENGLAND, OXFORD

ISBN

0021-9290

Periodical

JOURNAL OF BIOMECHANICS

Year of study

47

Number

16

State

GB

Pages from

3830

Pages to

3836

Pages count

7

URL

Documents

BibTex


@article{BUT110058,
  author="Petr {Marcián} and Libor {Borák} and Jiří {Valášek} and Jozef {Kaiser} and Zdeněk {Florian} and Jan {Wolff}",
  title="Finite Element Analysis of Dental Implant Loading on Atrophic and Non-atrophic Cancellous and Cortical Mandibular Bone - a Feasibility Study",
  annote="The first aim of this study is to assess displacements and micro-strain induced on different grades of atrophic cortical and trabecular mandibular bone by axially loaded dental implants using finite element analysis (FEA). The second aim was to assess the micro-strain induced by different implant geometries and the levels of bone-to-implant contact (BIC) on the surrounding bone. Six mandibular bone segments demonstrating different grades of mandibular bone atrophy and various bone volume fractions (from 0.149 to 0.471) were imaged using a micro-CT device. The acquired bone STL models and implant (Brånemark, Straumann, and Ankylos) were merged into a three-dimensional finite elements structure. The mean displacement value for all implants was 3.1 um. Displacements were lower in the group with a strong BIC. The results indicated that the maximum strain values of cortical and cancellous bone increased with lower bone density. Strain distribution is the first and foremost dependent on the shape of bone and architecture of cancellous bone. The geometry of the implant, thread patterns, grade of bone atrophy and BIC all affect the displacement and micro-strain on the mandible bone. Preoperative finite element analysis could offer improved predictability in the long-term outlook of dental implant restorations.",
  address="ELSEVIER SCI LTD",
  chapter="110058",
  doi="10.1016/j.jbiomech.2014.10.019",
  institution="ELSEVIER SCI LTD",
  number="16",
  volume="47",
  year="2014",
  month="december",
  pages="3830--3836",
  publisher="ELSEVIER SCI LTD",
  type="journal article in Web of Science"
}