שימוש בשתלים ליישור שיניים הולך ותופס תאוצה שנים האחרונות .

שתל יכול לשמש כעיגון מצוין מיד עם החדרתו (העמסה מידית).

ריכוז הכוחות שמופעלים עליו מתפזר לרב בעצם הקומפקטית סביב צוואר השתל מכאן  ההמלצה לעגון השתלים בעצם d1 או d2 

The European Journal of Orthodontics 2005 27(1):12-16; doi:10.1093/ejo/cjh066
© European Orthodontic Society 2005; all rights reserved

Three-dimensional numerical simulation of dental implants as orthodontic anchorage

M. M. Gallas1, M. T. Abeleira2, J. R. Fernández3 and M. Burguera3

1 Department of Adult Comprehensive Dentistry, University of Santiago de Compostela, Spain, 2 Department of Orthodontics and Paediatric Dentistry, University of Santiago de Compostela, Spain, 3 Department of Applied  athematics, University of Santiago de Compostela, Spain

Endosseous oral implants have been used as orthodontic anchorage in

subjects with multiple tooth agenesis, and their application under orthodontic loading has been demonstrated clinically andexperimentally.

The aim of this investigation was to examine three-dimensional (3D) bone and implant finite element (FE) models.

The first model assumed that there was no osseointegration and the second that full osseointegration had occurred.

These models were used to determine the pattern and distribution of stresses within the ITI-Bonefit® endosseous implant and its supporting tissues when used as an orthodontic anchorage unit.

The study examined a threaded implant placed in an edentulous segment of a human mandible with cortical and cancellous bone. The results, using both models, indicated that the maximum stresses were always located around the neck of the implant, in the marginal bone.

Thus, this area should be preserved clinically in order to maintain the bone-implant interface structurally and functionally.