Study on angle of immediate loading of immediate implant placement.
OBJECTIVE
To investigate the clinical immediate load at an angle after immediate placement of the implant.


METHODS
Select 4 adult dogs; through establishing the angle loading animal experiment model, perform lateral loading on 32 implants respectively at vertical and 0°, 10°, and 20°, with which as a basis for grouping, determine the osseointegration index and new bone growth rate; and observe the peri-implant bone remodeling conditions.


RESULTS
The 20° group is found with the most obvious bone absorption, and compared with other groups, its osseointegration index and new bone growth rate are statistically significant (P < 0.01); bone remodeling under 0° load stress is the best, with the formation of new bone and the highest bone contact ratio, which is the most reasonable under this the stress distribution compared with other angles.


CONCLUSIONS
The implant stress distribution at 0° against the occlusal force direction is closer to physiologic optimum stress on the implant bone interface, and it is permitted for the long axis of the immediately implanted and immediately loaded implant to be tilted within about 10° against the load angle.
*Department of Oral and Maxillofacial Surgery, The Second Hospital of Shandong University †Stomatology School of Shandong University, Jinan, People's Republic of China.
Sheng-Lei
SL
Luo
Kui-Feng
KF
Yuan
Qing-Guo
QG
Lai
Zhong-Jun
ZJ
Yang
Xiao-Peng
XP
Tang
Xin
X
Xu
D000818:Animals; D001732:Bite Force; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D003799:Dental Stress Analysis / Q000379:methods*; D004285:Dogs; D005260:Female; D008297:Male; D016348:Osseointegration / Q000502:physiology*
D015921:Dental Implants