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Inverse finite element analysis for an axisymmetric model of vertical tooth extraction.
Gadzella, Timothy J; Westover, Lindsey; Addison, Owen; Romanyk, Dan L.
Afiliación
  • Gadzella TJ; University of Alberta, Department of Mechanical Engineering, Edmonton, Canada.
  • Westover L; University of Alberta, Department of Mechanical Engineering, Edmonton, Canada.
  • Addison O; University of Alberta, School of Dentistry, Edmonton, Canada; King's College London, Faculty of Dentistry, Oral and Craniofacial Sciences, Kent, UK.
  • Romanyk DL; University of Alberta, Department of Mechanical Engineering, Edmonton, Canada; University of Alberta, School of Dentistry, Edmonton, Canada. Electronic address: dromanyk@ualberta.ca.
J Mech Behav Biomed Mater ; 157: 106641, 2024 Sep.
Article en En | MEDLINE | ID: mdl-38941913
ABSTRACT
BACKGROUND AND

OBJECTIVE:

Tooth extraction is a common clinical procedure with biomechanical factors that can directly influence patient outcomes. Recent development in atraumatic extraction techniques have endeavoured to improve treatment outcomes, but the characterization of extraction biomechanics is sparse. An axisymmetric inverse finite element (FE) approach is presented to represent the biomechanics of vertical atraumatic tooth extraction in an ex-vivo swine model.

METHODS:

Geometry and boundary conditions from the model are determined to match the extraction of swine incisors in a self-aligning ex vivo extraction experiment. Material parameters for the periodontal ligament (PDL) model are determined by solving an inverse FE problem using clusters of data obtained from 10 highly-controlled mechanical experiments. A seven-parameter visco-hyperelastic damage model, based on an Arruda-Boyce framework, is used for curve fitting. Three loading schemes were fit to obtain a common set of material parameters.

RESULTS:

The inverse FE results demonstrate good predictions for overall force-time curve shape, peak force, and time to peak force. The fit model parameters are sufficiently consistent across all three cases that a coefficient-averaged model was taken that compares well to all three cases. Notably, the initial modulus ,u, converged across trials to an average value of 0.472 MPa with an average viscoelastic constant g of 0.561.

CONCLUSIONS:

The presented model is found to have consistent parameters across loading cases. The capability of this model to represent the fundamental mechanical characteristics of the dental complex during vertical extraction loading is a significant advancement in the modelling of extraction procedures. Future work will focus on verifying the model as a predictive design tool for assessing new loading schemes in addition to investigating its applications to subject-specific problems.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Extracción Dental / Análisis de Elementos Finitos Límite: Animals Idioma: En Revista: J Mech Behav Biomed Mater Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Extracción Dental / Análisis de Elementos Finitos Límite: Animals Idioma: En Revista: J Mech Behav Biomed Mater Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Países Bajos