Implant Vertical Fractures Provoked by Laboratory Procedures : A Finite Element Analysis Inspired from Clinical Cases

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Implant Vertical Fractures Provoked by Laboratory Procedures : A Finite Element Analysis Inspired from Clinical Cases

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Publication Article, peer reviewed scientific
Title Implant Vertical Fractures Provoked by Laboratory Procedures : A Finite Element Analysis Inspired from Clinical Cases
Author Takeshita, Kenji ; Toia, Marco ; Jinno, Yohei ; Sumi, Takashi ; Takahashi, Tetsu ; Halldin, Anders ; Jimbo, Ryo
Date 2016
English abstract
Purpose: To investigate the causes for internal implant fractures, which is suggested to be one of the reasons for marginal bone loss. Materials and Methods: From a 14-year database of 6051 implants, 10 single implant vertical fractures were identified and the abutments were all castable abutments. The abutments presented contamination and irregularities at the internal connecting areas. The hypothesis was that perfect fit was disturbed by laboratory polishing procedures, and finite element analysis (FEA) using overcorrected and undercorrected castable abutment models were created and tested against a perfect fit model Results: The results from the FEA presented that both overcorrected and undercorrected models presented nonuniform excessive plastic strain distribution in the neck portion of the implants where clinically an implant fracture was noted Conclusions: The results suggested that laboratory procedures could induce plastic strain of the implant-abutment complex, which increases the risk of fracture
DOI https://doi.org/10.1097/ID.0000000000000392 (link to publisher's fulltext.)
Publisher Lippincott Williams & Wilkins
Host/Issue Implant Dentistry;3
Volume 25
ISSN 1056-6163
Pages 361-366
Language eng (iso)
Subject implant fracture
castable abutments
misfit
internal connection
Medicine
Research Subject Categories::ODONTOLOGY
Handle http://hdl.handle.net/2043/23029 Permalink to this page
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