[Numeric simulation of functional remodeling of the anterior alveolar bone].
OBJECTIVE
To study the remodeling of the anterior alveolar bone with parodontium under physiology loading using finite element method (FEM) and theory of bone remodeling.


METHODS
A FEM model of the maxillary central incisor with parodontium was established, and the change of bone density during the remodeling of alveolar bone was investigated under physiology loading (60 - 150 N) based on the theory of bone remodeling about strain energy density (SED). The finite element analysis software Abaqus user material subroutine (UMAT) were used.


RESULTS
With the increase of physiology loading, the pressure stress on the buccal cervical margin increased gradually while the density was decreased gradually. The cortical bone was lower than its initial density 1.74 g/cm(3), which was 1.74 - 1.63 g/cm(3). The density of cancellous bone was 0.90 - 0.77 g/cm(3), which was lower than its intial density 0.90 g/cm(3). The lingual cervical margin was under tensile stress which also increased with loading, the density had no significant change. When the achieve to 120 N, the density of cortical bone was 1.74 - 1.73 g/cm(3). No significant change was found in the cancellous bone.


CONCLUSIONS
The simulation of the perodontium remodeling is achieved and proved to be effective by the relevant research based on the method of the study. And the result will be helpful to form the basis of analysis bone remodeling process and predict the results in the clinical work.
Department of Prosthodontics, College of Stomatology, The Fourth Military Medical University, Xi'an 710032, China.
Wei-feng
WF
Wang
Hai-tao
HT
Xin
Shun-lai
SL
Zang
Jie
J
Ding
D000539:Alveolar Process / Q000502:physiology*; D015519:Bone Density; D016723:Bone Remodeling / Q000502:physiology*; D003198:Computer Simulation; D003799:Dental Stress Analysis / Q000379:methods; D020342:Finite Element Analysis; D006801:Humans; D007180:Incisor / Q000502:physiology*; D008437:Maxilla / Q000502:physiology*; D010519:Periodontium / Q000502:physiology; D013314:Stress, Mechanical