[Experimental study of biomechanics after mandibular outer cortex osteotomy].
OBJECTIVE
To investigate the local changes of biomechanics after osteotomy of mandibular outer cortex in body and angle areas.


METHODS
Six minitype pigs at the age of 8 to 12 months were selected. The mandibular outer cortex that involves angle and part of body was removed in one side. The animals were killed 24 weeks after operation. Bone strut was taken from mandibular angle region bilaterally and sent for biomechanical test


RESULTS
There was no biomechanical difference between the two angle areas of experimental and normal sides 24 weeks after mandibular outer cortex osteotomy (maximum load P > 0.05, rigidity P > 0.05).


CONCLUSIONS
Mandibular outer cortex osteotomy had no influence on local biomechanics.
Zhao
Yan-Feng
YF
Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Science, Beijing 100044, China.
Gui
Lai
L
D000818:Animals; D001696:Biomechanical Phenomena; D005260:Female; D008297:Male; D008334:Mandible / Q000502:physiology* / Q000601:surgery*; D010027:Osteotomy; D011184:Postoperative Period; D013552:Swine; D013556:Swine, Miniature