Comparison of stress distribution in teeth restored with fiber post and dentin post by applying orthotropic properties: A three-dimensional finite element analysis.

Autor:	Tammineedi S; Department of Conservative Dentistry and Endodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India., Kakollu S; Department of Conservative Dentistry and Endodontics, Government Dental College and Hospital, Vijayawada, Andhra Pradesh, India., Thota MM; Department of Conservative Dentistry and Endodontics, Government Dental College and Hospital, RIMS, Kadapa, Andhra Pradesh, India., Basam RC; Department of Conservative Dentistry and Endodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India., Basam LC; Department of Orthodontics and Dentofacial Orthopedics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India., Vemuri S; Department of Conservative Dentistry and Endodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India.
Jazyk:	angličtina
Zdroj:	Journal of conservative dentistry : JCD [J Conserv Dent] 2020 Nov-Dec; Vol. 23 (6), pp. 589-592. Date of Electronic Publication: 2021 Feb 11.
DOI:	10.4103/JCD.JCD_551_20
Abstrakt:	Aim of the Study: We aimed to compare stress distribution in a tooth restored with fiber post and dentin post after applying the orthotropic properties using three-dimensional finite element analysis (3D-FEA). Materials and Methods: Two 3D-FEA models were constructed. The material properties were assigned, and a load of 100 N was applied at 45° to the long axis of the model onto the lingual surface incisal to the cingulum. The FEA was done by applying orthotropic properties of dentin and fiber post. The maximum stresses produced in the tooth and post referred to as von Mises stress were recorded. The Ansys software was used which depicts the stress concentrations. Results: Von Mises values showed that glass fiber post (331 MPa) and dentin post (338 MPa)-restored tooth models presented similar stress values. Conclusion: Although both fiber post and dentin post presented similar von Mises stress values, the pattern of stress distribution is more favorable in dentin post. More favorable fracture could be expected in case of dentin post. Thus, the dentin post is a promising alternative post material for rehabilitating endodontically treated teeth. Clinical Significance: Ascribing the orthotropic properties in a FEA study means that the computational simulation was similar to that of clinical scenario, and hence simulates the dynamic intraoral conditions, thereby giving the accurate results. Competing Interests: There are no conflicts of interest. (Copyright: © 2021 Journal of Conservative Dentistry.)
Databáze:	MEDLINE
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