Mechanical Behaviour of Bioceramic Materials In Internal Resorptive Defects of the Root Canal – a Finite Element Analysis

Pooja Mahalakshmi Anavarathan; Rajasekaran Meenakshisundaram; Sharon Jessima Devasagayam

doi:10.5455/EJDR.20250930055748

Original Article
Online Published: 24 Jul 2026

Eu J Dent Res. 2026; 3(3): 35-43

doi: 10.5455/EJDR.20250930055748

Mechanical Behaviour of Bioceramic Materials In Internal Resorptive Defects of the Root Canal – a Finite Element Analysis

Pooja Mahalakshmi Anavarathan, Rajasekaran Meenakshisundaram, Sharon Jessima Devasagayam.

Abstract
Objective:
The aim of this study was to evaluate and compare the stress distribution in simulated mandibular premolars with an internal resorptive cavity (IRC) and obturated adopting a hybrid technique combining thermoplasticized gutta-percha with two different bioceramic materials – Mineral Trioxide Aggregate (MTA) and Biodentine – using Finite Element Analysis (FEA).
Methods:
Three finite element models of a mandibular premolar with an IRC at the mid-root level were geometrically modelled based on data from previous literature. The simulated teeth were obturated using different materials - thermoplasticized gutta-percha, MTA and Biodentine. The models were discretized using quadratic tetrahedral solid elements, yielding a mesh of 102830 elements and 189280 nodes. Using Ansys 15.0 software ( Ansys Inc., Canonsburg, PA, USA ) a force of 300N was applied at 45° angulation to the long axis of the tooth, on the buccal cusp tip.
Results :
The model obturated with gutta-percha exhibited the highest von mises stress concentration (162.79 MPa), while the Biodentine model showed the lowest (143.37 MPa). All three models demonstrated maximum stress concentration at the cervical region. Stress distribution within the IRC was more homogenous in the MTA and Biodentine models compared to gutta-percha.
Conclusion: Biodentine demonstrated the most favourable biomechanical behaviour, with lower peak stress concentration and more uniform stress distribution than gutta percha and MTA. Calcium silicate- based materials may provide biomechanical advantages when restoring teeth affected by internal resorption.

Key words: finite element analysis, root resorption, gutta-percha

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How to Cite this Article

Pubmed Style

Anavarathan PM, Meenakshisundaram R, Devasagayam SJ. Mechanical Behaviour of Bioceramic Materials In Internal Resorptive Defects of the Root Canal – a Finite Element Analysis. Eu J Dent Res. 2026; 3(3): 35-43. doi:10.5455/EJDR.20250930055748

Web Style

Anavarathan PM, Meenakshisundaram R, Devasagayam SJ. Mechanical Behaviour of Bioceramic Materials In Internal Resorptive Defects of the Root Canal – a Finite Element Analysis. https://www.wisdomgale.com/ejdr/?mno=287595 [Access: July 27, 2026]. doi:10.5455/EJDR.20250930055748

AMA (American Medical Association) Style

Anavarathan PM, Meenakshisundaram R, Devasagayam SJ. Mechanical Behaviour of Bioceramic Materials In Internal Resorptive Defects of the Root Canal – a Finite Element Analysis. Eu J Dent Res. 2026; 3(3): 35-43. doi:10.5455/EJDR.20250930055748

Vancouver/ICMJE Style

Anavarathan PM, Meenakshisundaram R, Devasagayam SJ. Mechanical Behaviour of Bioceramic Materials In Internal Resorptive Defects of the Root Canal – a Finite Element Analysis. Eu J Dent Res. (2026), [cited July 27, 2026]; 3(3): 35-43. doi:10.5455/EJDR.20250930055748

Harvard Style

Anavarathan, P. M., Meenakshisundaram, . R. & Devasagayam, . S. J. (2026) Mechanical Behaviour of Bioceramic Materials In Internal Resorptive Defects of the Root Canal – a Finite Element Analysis. Eu J Dent Res, 3 (3), 35-43. doi:10.5455/EJDR.20250930055748

Turabian Style

Anavarathan, Pooja Mahalakshmi, Rajasekaran Meenakshisundaram, and Sharon Jessima Devasagayam. 2026. Mechanical Behaviour of Bioceramic Materials In Internal Resorptive Defects of the Root Canal – a Finite Element Analysis. European Journal of Dental Research, 3 (3), 35-43. doi:10.5455/EJDR.20250930055748

Chicago Style

Anavarathan, Pooja Mahalakshmi, Rajasekaran Meenakshisundaram, and Sharon Jessima Devasagayam. "Mechanical Behaviour of Bioceramic Materials In Internal Resorptive Defects of the Root Canal – a Finite Element Analysis." European Journal of Dental Research 3 (2026), 35-43. doi:10.5455/EJDR.20250930055748

MLA (The Modern Language Association) Style

Anavarathan, Pooja Mahalakshmi, Rajasekaran Meenakshisundaram, and Sharon Jessima Devasagayam. "Mechanical Behaviour of Bioceramic Materials In Internal Resorptive Defects of the Root Canal – a Finite Element Analysis." European Journal of Dental Research 3.3 (2026), 35-43. Print. doi:10.5455/EJDR.20250930055748

APA (American Psychological Association) Style

Anavarathan, P. M., Meenakshisundaram, . R. & Devasagayam, . S. J. (2026) Mechanical Behaviour of Bioceramic Materials In Internal Resorptive Defects of the Root Canal – a Finite Element Analysis. European Journal of Dental Research, 3 (3), 35-43. doi:10.5455/EJDR.20250930055748