Objective: To evaluate the stress distribution on bone adjacent to an implant under the vertical load, oblique load and horizontal load.
Methods: Obtained three dimensional radiographic data of the jaw by dental CT scan. Based on the scanning sections, the three-dimensional finite element analysis mandible model was established. Loading vertical, oblique and horizontal forces on the implant, calculated the maximum stress, minimum stress and von mises stress.
Results: The peak stress occurred at the cervical bone margin adjacent to the implants;the stress concentration under the vertical loading is easily concentrated than that of vertical loading.
Conclusion: In the clinical designation,not only the force of bite but also the direction of the force should both be emphasised.