Journal of Prosthetic Dentistry
Volume 91, Issue 2 , Pages 144-150, February 2004

The influence of occlusal loading location on stresses transferred to implant-supported prostheses and supporting bone: a three-dimensional finite element study

  • Gurcan Eskitascioglu, DDS, PhD

      Affiliations

    • Professor, Department of Prosthodontics, Selcuk University, Konya, Turkey
    • ,
  • Aslihan Usumez, DDS, PhD

      Affiliations

    • Assistant Professor, Department of Prosthodontics, Selcuk University, Konya, Turkey
    • Corresponding Author InformationReprint requests to: Dr Aslıhan Usumez, Selcuk University, Faculty of Dentistry, Department of Prosthodontics, Campus/Konya, Turkey, Fax: +90-332-2410062
    • ,
  • Mujde Sevimay, DDS, PhD

      Affiliations

    • Research Fellow, Department of Prosthodontics, Selcuk University, Konya, Turkey
    • ,
  • Emel Soykan, DDS, PhD

      Affiliations

    • Research Fellow, Department of Periodontology, University of Ankara, Ankara, Turkey
    • ,
  • Elif Unsal, DDS, PhD

      Affiliations

    • Professor, Department of Periodontology, University of Ankara, Ankara, Turkey

Abstract 

Statement of problem

Information about the influence of occlusal loading by location on the stress distribution in an implant-supported fixed partial denture and supporting bone tissue is limited.

Purpose

The purpose of this study was to investigate the effect of loading at 1 to 3 different locations on the occlusal surface of a tooth on the stress distributions in an implant-supported mandibular fixed partial denture (FPD) and surrounding bone, using 3-dimensional finite element analysis.

Material and methods

A 3-dimensional finite element model of a mandibular section of bone (Type 2) with missing second premolar and its superstructures were used in this study. A 1-piece 4.1 × 10-mm screw-shape ITI dental implant system (solid implant) was modeled for this study. Cobalt-Chromium (Wiron 99) was used as the crown framework material and porcelain was used for occlusal surface.The implant and its superstructure were simulated in a Pro/Engineer 2000i program. Total loads at 300 N were applied at the following locations: 1) tip of buccal cusp (300 N); 2) tip of buccal cusp (150 N) and distal fossa (150 N); or 3) tip of buccal cusp (100 N), distal fossa (100 N), and mesial fossa (100 N).

Results

The results demonstrated that vertical loading at 1 location resulted in high stress values within the bone and implant. Close stress levels were observed within the bone for loading at 2 locations and 3 locations; the former created the most extreme stresses and the latter the most even stresses within the bone. With loading at 2 or 3 locations, stresses were concentrated on the framework and occlusal surface of the FPD, and low stresses were distributed to the bone.

Conclusion

For the loading conditions investigated, the optimal combination of vertical loading was found to be loading at 2 or 3 locations which decreased the stresses within the bone. In this situation, von Mises stresses were concentrated on the framework and occlusal surface of the FPD.

To access this article, please choose from the options below

Login to an existing account or Register a new account.

  • Purchase this article for 15.00 USD (You must login/register to purchase this article)

    Online access for 24 hours. The PDF version can be downloaded as your permanent record.

  • Subscribe to this title

    Get unlimited online access to this article and all other articles in this title 24/7 for one year.

  • Claim access now

    For current subscribers with Society Membership or Account Number.

  • Visit SciVerse ScienceDirect to see if you have access via your institution.
 

PII: S0022-3913(03)00741-8

doi:10.1016/j.prosdent.2003.10.018

Journal of Prosthetic Dentistry
Volume 91, Issue 2 , Pages 144-150, February 2004

Article Tools

* Image Usage & Resolution