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Madfa AA, Al-Hamzi MA, Al-Sanabani FA, et al. 3D FEA of cemented glass fiber and cast posts with various dental cements in a maxillary central incisor. Springerplus. 2015;4:598doi: 10.1186/s40064-015-1345-4.
Madfa, A. A., Al-Hamzi, M. A., Al-Sanabani, F. A., Al-Qudaimi, N. H., & Yue, X. G. (2015). 3D FEA of cemented glass fiber and cast posts with various dental cements in a maxillary central incisor. SpringerPlus, 4598. https://doi.org/10.1186/s40064-015-1345-4
Madfa, Ahmed A, et al. "3D FEA of cemented glass fiber and cast posts with various dental cements in a maxillary central incisor." SpringerPlus vol. 4 (2015): 598. doi: https://doi.org/10.1186/s40064-015-1345-4
Madfa AA, Al-Hamzi MA, Al-Sanabani FA, Al-Qudaimi NH, Yue XG. 3D FEA of cemented glass fiber and cast posts with various dental cements in a maxillary central incisor. Springerplus. 2015 Oct 13;4:598. doi: 10.1186/s40064-015-1345-4. eCollection 2015. PMID: 26543733; PMCID: PMC4627971.
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Springerplus. 2015 Oct 13;4:598. doi: 10.1186/s40064-015-1345-4. eCollection 2015.

3D FEA of cemented glass fiber and cast posts with various dental cements in a maxillary central incisor.

SpringerPlus

Ahmed A Madfa, Mohsen A Al-Hamzi, Fadhel A Al-Sanabani, Nasr H Al-Qudaimi, Xiao-Guang Yue

Affiliations

  1. Department of Conservative Dentistry, Faculty of Dentistry, University of Thamar, Dhamar, Yemen.
  2. Department of Pediatric Dentistry, Preventive Dentistry and Orthodontics, Faculty of Dentistry, University of Thamar, Dhamar, Yemen.
  3. Department of Safety Science and Engineering, Wuhan University of Technology, Wuhan, China.

PMID: 26543733 PMCID: PMC4627971 DOI: 10.1186/s40064-015-1345-4

Abstract

This study aimed to analyse and compare the stability of two dental posts cemented with four different luting agents by examining their shear stress transfer through the FEM. Eight three-dimensional finite element models of a maxillary central incisor restored with glass fiber and Ni-Cr alloy cast dental posts. Each dental post was luted with zinc phosphate, Panavia resin, super bond C&B resin and glass ionomer materials. Finite element models were constructed and oblique loading of 100 N was applied. The distribution of shear stress was investigated at posts and cement/dentine interfaces using ABAQUS/CAE software. The peak shear stress for glass fiber post models minimized approximately three to four times of those for Ni-Cr alloy cast post models. There was negligible difference in peak of shear stress when various cements were compared, irrespective of post materials. The shear stress had same trend for all cement materials. This study found that the glass fiber dental post reduced the shear stress concentration at interfacial of post and cement/dentine compared to Ni-Cr alloy cast dental post.

Keywords: Biomechanics; Dental cement; Dental post; Finite element method; Shear stress

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