[Three-dimensional finite element analysis of stress in supporting bone of mandibular posterior fixed bridge. I. Stress analysis of the surface of alveolar bone around bridge abutments].
OBJECTIVE
Stress levels of the surface of alveolar bone around bridge abutment of posterior fixed bridge were studied.


METHODS
The three-dimensional finite element model was developed on the basis of a try adult mandible. 6 vertical and 1 horizontal loadings were applied respectively, and the Maximum stress(epsilon max) and the Minimum stress(epsilon min) of the surface of alveolar bone around bridge abutment were calculated.


RESULTS
The stress concentration exhibited at the apical and cervical regions. The stress of the bicuspid was about 2.1 times as high as that of the molar. When transverse loading was applied, the stress level was about 3.5 times as high as that when vertical loading was applied.


CONCLUSIONS
The results were greatly valuable to design of posterior fixed bridge.
Tang
L
L
Department of Stomatology, Medical College, Jinan University.
Chen
G
G
D000539:Alveolar Process / Q000502:physiology*; D000044:Dental Abutments; D003830:Denture, Partial, Fixed; D020342:Finite Element Analysis; D006801:Humans; D013314:Stress, Mechanical; D013499:Surface Properties