ArticleJournal of conservative dentistry and endodontics2026
Comparative analysis of stress distribution in teeth restored with glass fiber post, short fiber-reinforced composite post, and ribbond fiber post: A three-dimensional finite element study.
Article in Journal of conservative dentistry and endodontics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Context: Endodontically treated teeth are biomechanically compromised and require posts to restore strength. Postmaterial elasticity influences stress distribution and long-term prognosis. Aims: To compare stress distribution in teeth restored with glass fiber post, short fiber-reinforced composite (SFRC) post, and ribbond fiber post: A three-dimensional (3D) finite element analysis. Materials and Methods: 3D finite element models of maxillary central incisors were developed using ANSYS software based on Wheeler's Dental Anatomy, incorporating enamel, dentin, cementum, periodontal ligament, gutta-percha, composite resin, and ceramic crown. Three models-glass fiber post, SFRC post, and ribbond fiber post - were analyzed with 4-mm gutta-percha seal. Material properties were assigned from the literature and a 100 N oblique load at 45° was applied. Stress distribution was evaluated using von Mises criteria. Results: All postsystems showed similar deformation (≈0.1428 mm). Internal stresses within post were 12.28 MPa (Glass Fiber), 5.22 MPa (SFRC), and 9.73 MPa (Ribbond). Cervical stresses were 5.21, 5.15, and 5.20 MPa, and stresses at the post end were 3.61, 1.49, and 1.95 MPa. Maximum stress occurred cervically, with SFRC post showing lowest stresses. Conclusions: Within the study limitations, SFRC posts exhibited favorable stress distribution, better dentin compatibility, reduced fracture risk, and enhanced restoration longevity.
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