[Characteristics of stress distribution on bone adjacent to implants under three different loading directions].
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.


CONCLUSIONS
In the clinical designation,not only the force of bite but also the direction of the force should both be emphasised.
Lai
Hong-chang
HC
Center for Oral & Cranio-Maxillofacial Implantology, Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011, China. lhc9@hotmail.com
Zhang
Zhi-yong
ZY
Zhang
Bao-wei
BW
Zhang
Jian-zhong
JZ
Zhang
Fu-qiang
FQ
Xue
Miao
M