Three-dimensional finite element analysis of the mechanical stress on root from orthodontic tooth movement by sliding mechanics

Abstract

In order to study mechanical stress on root from orthodontic tooth movement by sliding mechanics, a 3-dimensional finite element model incorporating all layers of a human mandibular dental arch with orthodontic appliance has been developed to simulate mechanical stress on root from the orthodontic tooth movement. Simulated orthodontic force of 2 N at 0, 30 and 45 degree from the horizontal axis was applied to the crown of the teeth. The finite element analysis showed when orthodontic forces were applied to the tooth, the stress was mainly concentrated at the neck of the tooth decreasing uniformly to the apex and crown. The highest stress on the root was 0.621 N/mm(2) for cervical margin of the canine, and 0.114 N/mm(2) for apical region of the canine. The top of canine crown showed the largest amount of displacement (2.417 microm), while the lowest amount of displacement was located at the apical region of canine (0.043 microm). In conclusion, this model might enable one to simulate orthodontic tooth movements clinically. Sliding force at 2 N is ideal to ensure the bodily orthodontic tooth movement. The highest stress concentration in the roots was always localized at the cervical margin when orthodontic force of 2 N at 0, 30 and 45 degree from the horizontal axis, so there may be the same risk of root resorption when orthodontic force of 2 N at 0, 30 and 45 degree was used in clinic cases.

Mathematical Modelling and Simulation of Periodontal Ligament Using COMSOL Multiphysics

“…So that it will helps dentists to learn details about the elasticity of periodontal ligament by referring this study. More details about the modelling and simulation of tooth movement can be find in [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17].…”

Finite element analysis of the stress state produced by an orthodontic skeletal anchorage system based on miniscrews

“…Some published studies already investigated the effects of orthodontic forces. e.g., Li et al [9] simulated by finite element method (FEM) the application of a linguo-labialy directed force of 2 N applied through an arch-wire on the lower arch, and obtained a maximum displacement of 2.42 × 10 −3 mm. Another study conducted by Driel et al [10] applied, ex vivo, a distally-mesially directed force of 3 N on the second premolar of dogs.…”

Análise por meio do método dos elementos finitos de um protetor bucal para atividades esportivas

“…Na Odontologia o método ou a análise por elementos finitos, seja em 2D ou 3D, apresenta vertentes diversas que vão desde a avaliação da movimentação ortodôntica durante o uso da aparatologia fixa (Lotti et al, 2006), até o estudo da remodelação óssea no caso de implantes frente à exposição destes sob carga excessiva (Li et al, 2007).…”

“…Assim, por meio desta metodologia podemos conhecer as tensões recebidas pelos tecidos dentários e de suporte no instante de um contato direto, de modo a se mostrar as alterações de comportamento das estruturas biológicas frente a um determinado esforço (Lotti et al, 2006;Li et al, 2007;Yang;Xiang, 2007) (Knapik et al, 2007;Santiago et al, 2008).…”