Title
Compare and evaluate fracture strength of endodontically treated mandibular premolar teeth restored using different fiber post and core systems: An in vitro study
Authors
Sai Tejaswi Devarapalli1,*, Bharathi Munagapati2, Y. Poojitha1, Challa Deepika1, Saroja Amaladinna1 & Sreelekha Cigicherla2
Affiliation
1Department of Prosthodontic Crown and Bridge, Narayana Dental College and Hospital, Nellore, Andhra Pradesh, India; 2Department of Prosthodontics Crown and Bridge, G. Pulla Reddy Dental College and Hospital, Kurnool, Andhra Pradesh, India; *Corresponding author
Sai Tejaswi Devarapalli - E-mail: devarapallisaitejaswi@gmail.com
Bharathi Munagapati - E-mail: munagapatibharathi@gmail.com
Y. Poojitha - E - mail: pooja1991nlr@gmail.com
Challa Deepika - E-mail: deepika.c44@gmail.com
Saroja Amaladinna - E-mail: amaladinnasaroja@gmail.com
Sreelekha Cigicherla - E-mail: sreelekha459@gmail.com
Article Type
Research Article
Date
Received March 1, 2026; Revised March 31, 2026; Accepted March 31, 2026, Published March 31, 2026
Abstract
The optimal method for restoring endodontically treated teeth remains a subject of ongoing clinical debate. While prefabricated posts are frequently recommended to support final restorations, their necessity and overall effectiveness continue to be a point of professional controversy. Therefore, it is of interest to evaluate the effect of fiber posts on the fracture resistance of endodontically treated mandibular premolars, where 60 standardized mandibular premolars were restored using and divided into three groups: Group A (no post), Group B (glass fiber post) and Group C (carbon fiber post). A universal testing machine was used to apply axial force and determine the failure point of each specimen. Thus, we show that the highest fracture strength is maintained when teeth are restored without a post, provided sufficient natural tooth structure is preserved. In cases where a post is required, glass fiber systems demonstrated statistically significant superiority over carbon fiber alternatives. Consequently, the study concludes that posts do not reinforce the tooth structure but are primarily for restoration retention, with glass fiber being the preferred material for its strength and aesthetic properties.
Keywords
Endodontically treated teeth, post and core, glass fiber post, carbon fiber post, fracture strengt
Citation
Devarapalli et al. Bioinformation 22(3): 1540-1545 (2026)
Edited by
Rashmi Laddha
ISSN
0973-2063
Publisher
License
This is an Open Access article which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. This is distributed under the terms of the Creative Commons Attribution License.
