Finite element approach to investigate the influence of the design configuration of the ITI solid implant on the bone stresses during the osseointegration process

Cha, Sang Bum; Lee, Kyu Bok; Jo, Kwang Hun

Abstract

STATEMENT OF PROBLEM: Standard type of ITI solid implant model in the 6.2mm thick jaw bone was axisymmetrically modelled for finite element stress analyses. PURPOSE: Primary objective was to investigate the influences of the characteristic design configuration of the ITI solid implant model on the bone stress with the course of osseointegration process at the bone/implant interfaces. To simulate the characteristics of the osseointegration process, five different stages of the bone/implant interface model were implemented. As load conditions, vertical load of 50N was taken into consideration. Bone at the cervical region of implant was the areas of concern where the higher level of stress were likely to take place.
RESULTS
The results indicated that rather slightly different stress level could be obtained as a function of the osseointegration conditions.
CONCLUSION
Under vertical load, the lower level of stress was observed at the cervical cortical bone in the initial and final stages of osseointegration. Relatively higher stress level, however, was observed during the transitional stages where the osseointegration at the cancellous bone interface were yet to fully develop.