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Understanding mechanisms and factors related to implant fixation: a model study of removal torque
RISE, SP – Sveriges Tekniska Forskningsinstitut, Glafo Glasforskningsinstitutet.
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2014 (English)In: Journal of The Mechanical Behavior of Biomedical Materials, ISSN 1751-6161, E-ISSN 1878-0180, Vol. 34, 83-92 p.Article in journal (Refereed)
Abstract [en]

Osseointegration is a prerequisite for achieving a stable long-term fixation and load-bearing capacity of bone anchored implants. Removal torque measurements are often used experimentally to evaluate the fixation of osseointegrated screw-shaped implants. However, a detailed understanding of the way different factors influence the result of removal torque measurements is lacking. The present study aims to identify the main factors contributing to anchorage. Individual factors important for implant fixation were identified using a model system with an experimental design in which cylindrical or screw-shaped samples were embedded in thermosetting polymers, in order to eliminate biological variation. Within the limits of the present study, it is concluded that surface topography and the mechanical properties of the medium surrounding the implant affect the maximum removal torque. In addition to displaying effects individually, these factors demonstrate interplay between them. The rotational speed was found not to influence the removal torque measurements within the investigated range. © 2014 Elsevier Ltd.

Place, publisher, year, edition, pages
2014. Vol. 34, 83-92 p.
Keyword [en]
Chemical engineering
Keyword [sv]
Kemiteknik
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Chemical Engineering
Identifiers
URN: urn:nbn:se:ri:diva-901DOI: 10.1016/j.jmbbm.2014.02.006PubMedID: 24566379Scopus ID: 2-s2.0-84894333338OAI: oai:DiVA.org:ri-901DiVA: diva2:958442
Available from: 2016-09-07 Created: 2016-09-07 Last updated: 2017-11-21Bibliographically approved

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