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A three-dimensional finite-element stress analysis of an endodontically prepared maxillary central incisor.
Ricks-Williamson, L J; Fotos, P G; Goel, V K; Spivey, J D; Rivera, E M; Khera, S C.
Afiliação
  • Ricks-Williamson LJ; Department of Endodontics, University of Iowa, Iowa City 52242, USA.
J Endod ; 21(7): 362-7, 1995 Jul.
Article em En | MEDLINE | ID: mdl-7499976
This study is an application of a three-dimensional Finite-Element Method to investigate the changes in stress characteristics of a prepared maxillary central incisor. The purpose of this study was to analyze stress distributions in this tooth after simulated canal preparation and static loading. A maxillary central incisor was embedded in acrylic, sectioned, photographed, and digitized. A three-dimensional finite-element model was generated by a computer and appropriately modified to simulate canal preparation. Data identified the highest stress magnitudes to be located between the middle and coronal thirds of the root; an area clinically observed to be prone to fracture during treatment. In addition, the magnitude of generated stresses was directly correlated with the simulated prepared canal diameter. The development of a validated three-dimensional finite-element method could identify areas that may predispose a tooth to structural failure during condensation loads.
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Obturação do Canal Radicular / Análise do Estresse Dentário / Incisivo Tipo de estudo: Etiology_studies / Prognostic_studies Idioma: En Ano de publicação: 1995 Tipo de documento: Article
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Obturação do Canal Radicular / Análise do Estresse Dentário / Incisivo Tipo de estudo: Etiology_studies / Prognostic_studies Idioma: En Ano de publicação: 1995 Tipo de documento: Article