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Finite element modelling of implant designs and cortical bone thickness on stress distribution in maxillary type IV bone

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  • Chou I-Chiang
  • Lee Shyh-Yuan
  • Wu Ming-Chang
  • Chia-Wei Sun
  • Cho-Pei Jiang

Abstract

The aims of this study were to examine the effect of implant neck design and cortical bone thickness using 3D finite element analysis and to analyse the stability of clinical evidence based on micromotion and principal stress. Four commercial dental implants for a type IV bone and maxillary segments were created. Various parameters were considered, including the osseointegration condition, loading direction and cortical bone thickness. Micromotion and principal stresses were used to evaluate the failure of osseointegration and bone overloading, respectively. It was found that the maximum stress of the peri-implant bone decreased as cortical bone thickness increased. The micromotion level in full osseointegration is less than that in non-osseointegration and it also decreases as cortical bone thickness increases. The cortical bone thickness should be measured before surgery to help select a proper implant. In the early stage of implantation, the horizontal loading component induces stress concentration in bone around the implant neck more easily than does the vertical loading component, and this may result in crestal bone loss.

Suggested Citation

  • Chou I-Chiang & Lee Shyh-Yuan & Wu Ming-Chang & Chia-Wei Sun & Cho-Pei Jiang, 2014. "Finite element modelling of implant designs and cortical bone thickness on stress distribution in maxillary type IV bone," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 17(5), pages 516-526, April.
    • Handle: RePEc:taf:gcmbxx:v:17:y:2014:i:5:p:516-526
    DOI: 10.1080/10255842.2012.697556
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