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

Madfa AA, Al-Hamzi MA, Al-Sanabani FA, Al-Qudaimi NH, Yue XG - Springerplus (2015)

Bottom Line: Finite element models were constructed and oblique loading of 100 N was applied.There was negligible difference in peak of shear stress when various cements were compared, irrespective of post 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.

View Article: PubMed Central - PubMed

Affiliation: Department of Conservative Dentistry, Faculty of Dentistry, University of Thamar, Dhamar, Yemen.

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.

No MeSH data available.


Related in: MedlinePlus

Schematic illustration of the three dimensional geometric model
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Fig1: Schematic illustration of the three dimensional geometric model

Mentions: Finite element method (FEM) has been used by several studies for attempting to know the process of stress dissipation in teeth restored by various restorations (Pegoretti et al. 2002; Boschian Pest et al. 2006; Abu Kasim et al. 2011; Madfa et al. 2014). Therefore, this study aimed to analyze and compare the stability of two dental post materials (Ni–Cr alloy cast and glass fiber) cemented with four different luting materials (zinc phosphate, Panavia™ resin, superbond, C&B resin and glass ionomer) by investigating their shear stress transfer through the FEM (Fig. 1).Fig. 1


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

Madfa AA, Al-Hamzi MA, Al-Sanabani FA, Al-Qudaimi NH, Yue XG - Springerplus (2015)

Schematic illustration of the three dimensional geometric model
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4627971&req=5

Fig1: Schematic illustration of the three dimensional geometric model
Mentions: Finite element method (FEM) has been used by several studies for attempting to know the process of stress dissipation in teeth restored by various restorations (Pegoretti et al. 2002; Boschian Pest et al. 2006; Abu Kasim et al. 2011; Madfa et al. 2014). Therefore, this study aimed to analyze and compare the stability of two dental post materials (Ni–Cr alloy cast and glass fiber) cemented with four different luting materials (zinc phosphate, Panavia™ resin, superbond, C&B resin and glass ionomer) by investigating their shear stress transfer through the FEM (Fig. 1).Fig. 1

Bottom Line: Finite element models were constructed and oblique loading of 100 N was applied.There was negligible difference in peak of shear stress when various cements were compared, irrespective of post 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.

View Article: PubMed Central - PubMed

Affiliation: Department of Conservative Dentistry, Faculty of Dentistry, University of Thamar, Dhamar, Yemen.

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.

No MeSH data available.


Related in: MedlinePlus