3D-FE analysis of functionally graded structured dental posts

Abu Kasim, N.H.; MADFA, A.A.; HAMDI, M.; RAHBARI, G.R. (2011) 3D-FE analysis of functionally graded structured dental posts. Dental Materials Journal, 30 (6). pp. 869-880. ISSN 0287-4547

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      Abstract

      This study aimed to compare the biomechanical behaviour of functionally graded structured posts (FGSPs) and homogenous-type posts in simulated models of a maxillary central incisor. Two models of FGSPs consisting of a multilayer xTi-yHA composite design, where zirconia and alumina was added as the first layer for models A and B respectively were compared to homogenous zirconia post (model C) and a titanium post (model D). The amount of Ti and HA in the FGSP models was varied in gradations. 3D-FEA was performed on all models and stress distributions were investigated along the dental post. In addition, interface stresses between the posts and their surrounding structures were investigated under vertical, oblique, and horizontal loadings. Strain distribution along the post-dentine interface was also investigated. The results showed that FGSPs models, A and B demonstrated better stress distribution than models C and D, indicating that dental posts with multilayered structure dissipate localized and interfacial stress and strain more efficiently than homogenous-type posts.

      Item Type: Article
      Creators:
      1. Abu Kasim, N.H.(Department of Conservative Dentistry, Faculty of Dentistry Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA)
      2. MADFA, A.A.
      3. HAMDI, M.
      4. RAHBARI, G.R.
      Journal or Publication Title: Dental Materials Journal
      Additional Information: Associate Prof. Dr. Noor Hayaty Binti Abu Kasim Department of Conservative Dentistry, Faculty of Dentistry, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
      Uncontrolled Keywords: Heterogeneous Structure; Functionally Graded Design; Multilayer Post; Interfacial Stress; Simulated Model; Self-Repair; Culture-Conditions; Composite Resin; Dental Pulp Stem Cell; Functionally Graded Design; Multi Layered Post; Functionally Graded Dental Post; Soft Skills; Clinical Pairing; Dental Pulp Stromal Cells; Long-Term Expansion
      Subjects: R Medicine
      R Medicine > R Medicine (General)
      R Medicine > RK Dentistry
      Divisions: Faculty of Dentistry > Dept of Conservative Dentistry
      Depositing User: Associate Prof. Dr. Noor Hayaty Abu Kasim
      Date Deposited: 02 Feb 2012 17:07
      Last Modified: 02 Feb 2012 17:07
      URI: http://eprints.um.edu.my/id/eprint/2533

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