Influence of post design and elastic modulus mismatch between dentin and post-core on stress distribution in endodontically treated teeth: a finite element analysis study


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Published: Mar 30, 2024
DOI: https://doi.org/10.37983/IJDM.2024.6104
Keywords:
Fiberlux, Taperlux, Parapost, Finite element analysis
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Original Articles
Statistic

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Sharmista Reddy Sirigam
G Pulla Reddy Dental College and Hospital
Dinakar Karnatam
G Pulla Reddy Dental College and Hospital
Upendra Natha Reddy
G Pulla Reddy Dental College and Hospital
Sathish Kumar Neshaneni
G Pulla Reddy Dental College and Hospital
Anusha Yalamanchi
G Pulla Reddy Dental College and Hospital
Satyavathi Sri
G Pulla Reddy Dental College and Hospital

Abstract

Background: ParaPost Fiber Posts are made to use resin-based cement and core build-up materials to provide an optimal Monoblock between the dentin-post-crown, resulting in one cohesive restoration.


Aim: To evaluate the stress distribution pattern of a Severely damaged maxillary central incisor restored with ParaPost Taper lux, fiber lux and E-max crown using Finite element analysis. 


Materials and methods: Two 3-D FEA models of maxillary central incisor were simulated with anatomy-based geometric structures. Different Glass Fiber reinforced composite posts (PTL and PFL) and full coverage restorations (Lithium disilicate) were used. The paracore (dual-cured glass-reinforced composite material) was used for core build-up and cementation of both the Posts and full coronal restorations to create an optimal Monoblock effect.


MODEL 1: Parapost Taper Lux (PTL), Paracore & Lithium disilicate Full coverage restoration. (LidiS).


 MODEL 2: Parapost Fiber Lux (PFL), Paracore & Lithium disilicate Full coverage restoration. (LidiS).


A 3D model of the maxillary central incisor area, including restorative components, was created. The normal masticatory load of 100 N were applied at a 5mm distance from the incisal edge, at an angle of 45? in relation to the long axis of the tooth was simulated onto the imported models. Von Mises [Vm] stresses generated at the Post–Core assembly, Coronal & Radicular dentin were numerically recorded, color-coded, and compared.


Results: The maximum stresses were evidenced both at the mid and coronal thirds of the labial aspects of radicular dentin, and the least stresses were observed at the palatal aspect of apical 3rd.


Conclusion: Parallel-sided post (Parapost Fiber Lux) showed the greatest stress distribution on the middle third of the labial radicular dentin.

Article Details


How to Cite
Sirigam, S. R., Karnatam, D., Reddy, U. N., Neshaneni, S. K., Yalamanchi, A., & Sri, S. (2024). Influence of post design and elastic modulus mismatch between dentin and post-core on stress distribution in endodontically treated teeth: a finite element analysis study. International Journal of Dental Materials, 6(1), 16–21. https://doi.org/10.37983/IJDM.2024.6104
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This work is licensed under a Creative Commons Attribution 4.0 International License.

This work is licensed under a Creative Commons Attribution 4.0 International License.

Author Biographies

Sharmista Reddy Sirigam, G Pulla Reddy Dental College and Hospital

Postgraduate Student, Department of Conservative Dentistry and Endodontics, G Pulla Reddy Dental College and Hospital, Kurnool, Andhra Pradesh, India.

Dinakar Karnatam, G Pulla Reddy Dental College and Hospital

Postgraduate Student, Department of Conservative Dentistry and Endodontics, G Pulla Reddy Dental College and Hospital, Kurnool, Andhra Pradesh.

Upendra Natha Reddy, G Pulla Reddy Dental College and Hospital

Professor, Department of Conservative Dentistry and Endodontics, G Pulla Reddy Dental College and Hospital, Kurnool, Andhra Pradesh, India.

Sathish Kumar Neshaneni, G Pulla Reddy Dental College and Hospital

Reader, Department of Conservative Dentistry and Endodontics, G Pulla Reddy Dental College and Hospital, Kurnool, Andhra Pradesh, India.

Anusha Yalamanchi, G Pulla Reddy Dental College and Hospital

Reader, Department of Conservative Dentistry and Endodontics, G Pulla Reddy Dental College and Hospital, Kurnool, Andhra Pradesh, India.

Satyavathi Sri, G Pulla Reddy Dental College and Hospital

Senior Lecturer, Department of Conservative Dentistry and Endodontics, G Pulla Reddy Dental College and Hospital, Kurnool, Andhra Pradesh, India.

 

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