Three-dimensional stress analysis of periodontal ligament of mandible incisors fixed bridge abutments under dynamic loads by finite element method / 华西口腔医学杂志
West China Journal of Stomatology
; (6): 591-594, 2007.
Artigo
em Chinês
| WPRIM (Pacífico Ocidental)
| ID: wpr-296739
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>Three-dimensional finite method was used to analyze stress and strain distributions of periodontal ligament of abutments under dynamic loads.</p><p><b>METHODS</b>Finite element analysis was performed on the model under dynamic loads with vertical and oblique directions. The stress and strain distributions and stress-time curves were analyzed to study the biomechanical behavior of periodontal ligament of abutments.</p><p><b>RESULTS</b>The stress and strain distributions of periodontal ligament under dynamic load were same with the static load. But the maximum stress and strain decreased apparently. The rate of change was between 60%-75%. The periodontal ligament had time-dependent mechanical behaviors. Some level of residual stress in periodontal ligament was left after one mastication period. The stress-free time under oblique load was shorter than that of vertical load.</p><p><b>CONCLUSION</b>The maximum stress and strain decrease apparently under dynamic loads. The periodontal ligament has time-dependent mechanical behaviors during one mastication. There is some level of residual stress left after one mastication period. The level of residual stress is related to the magnitude and the direction of loads. The direction of applied loads is one important factor that affected the stress distribution and accumulation and release of abutment periodontal ligament.</p>
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Assunto principal:
Ligamento Periodontal
/
Dente
/
Análise de Elementos Finitos
/
Prótese Parcial Fixa
/
Incisivo
/
Mandíbula
/
Mastigação
Tipo de estudo:
Estudo prognóstico
Limite:
Humanos
Idioma:
Chinês
Revista:
West China Journal of Stomatology
Ano de publicação:
2007
Tipo de documento:
Artigo