Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
The influence of stiffness of implant-abutment connection on load-deflection ratios of a screw-retained stiff cantilever beam. 3-D measurements in vitro
The Institute for Postgraduate Dental Education, Department of Periodontology, Jönköping.
The Institute for Postgraduate Dental Education, Department of Periodontology, Jönköping.
Jönköping University, School of Health Science, HHJ, Dep. of Rehabilitation. Jönköping University, School of Health Science, HHJ. Prosthetics and Orthotics.
2013 (English)In: Clinical Oral Implants Research, ISSN 0905-7161, E-ISSN 1600-0501, Vol. 24, no 11, 1251-1256 p.Article in journal (Refereed) Published
Abstract [en]

Aim: The purpose of this in vitro study was to investigate the influence of degree of stiffness of implant-abutment connection of a Brånemark implant system on load- deflection ratios in three dimensions of the beam-end of a screw-retained stiff cantilever beam when subjected to vertically directed loads.

Material and methods: Two different implant-abutment connections were tested; welded and screw-retained. One of the abutments (EsthetiCone 2.0; Nobel Biocare AB) was screwed with a torque force of 20 N cm and then laser welded around its entire periphery to one of two Brånemark implants (welded unit). This unit and the other implant were tightly screwed into each of two pre-threaded holes in a steel plate so that the implants became submerged in the plate. The remaining abutment was thereafter screwed to its implant with a torque force of 20 N cm (screw-retained unit). A cantilevered gold beam of 6 mm height and width comprising a gold cylinder (Nobel Biocare AB) was attached to each abutment with a slotted, flat headed, prosthetic gold screw (torque force 10 N cm). A force transducer, synchronized with a 3-D motion analysis system, was glued on the upper surface of each beam-end 19.4 mm from the implant, to register the loads transferred from a specially built loading device. The beam-ends were stepwise subjected to vertically directed loads from 14.9 to 40.3 N and the vertical and horizontal deflections of the beam-ends were registered with the 3-D motion analysis system.

Results: For load 14.9–40.3 N the vertical (z-axis) deflections of the beam-end were for the welded implant-abutment connection reduced with 18–46% compared with the screw-retained unit. After maximal loading (40.3 N) the horizontal counter-clockwise rotation of the beam around the screw joints (y-axis rotations) was reduced with 61% for the welded connection. The horizontal movements of the beam-end along the x-axis (x-axis deflections) were reduced with 49% at maximal loading.

Conclusion: It was concluded that increased implant-abutment stiffness will substantially reduce both vertical and horizontal deflections of a screw-retained stiff cantilever beam subjected to vertically directed loads.

Place, publisher, year, edition, pages
2013. Vol. 24, no 11, 1251-1256 p.
Keyword [en]
3-D deflections, biomechanics, cantilever loads, motion analysis system, screw joints, screw-joint stiffness
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:hj:diva-19784DOI: 10.1111/j.1600-0501.2012.02563.xPubMedID: 22906410OAI: oai:DiVA.org:hj-19784DiVA: diva2:565665
Available from: 2012-11-08 Created: 2012-11-08 Last updated: 2014-03-10Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Karlsson, Dan
By organisation
HHJ, Dep. of RehabilitationHHJ. Prosthetics and Orthotics
In the same journal
Clinical Oral Implants Research
Medical and Health Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 244 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf