[Study of three-dimensional model on biomechanical characteristics of mandibular fractures in different site].
OBJECTIVE
To determine the biomechanical characteristics of mandibular fractures in different site.


METHODS
Nine adult mandibular specimens were measured precisely. The data was used to establish a three-dimensional model. When mandibular was under functional loading, the bending and torsion moment as well as shear force of angle, body and symphyseal fracture was calculated. The data were analyzed by Origin 6.0 software.


RESULTS
Angle fracture had relatively high positive bending moment and high shear force. Body fracture had positive as well as negative bending moment and the highest torsion moments. Symphyseal fracture had only negative bending moment and relatively low shear force.


CONCLUSIONS
Angle, body and symphyseal fractures each have a biomechanics characteristic. These biomechanics characteristic should have an important meaning in the treatment of mandibular fractures and instructing patient how to bite correctly.
Liu
Chun-li
CL
Dept. of Oral and Maxillofacial Surgery, College of Stomatology, Jilin University, Changchun 130000, China.
Wu
An-ping
AP
Piao
Zheng-guo
ZG
Wu
Hong
H
Peng
Tie-nan
TN
Liu
Lei
L
D000328:Adult; D001696:Biomechanical Phenomena; D006801:Humans; D008334:Mandible; D008337:Mandibular Fractures