Title
Fracture resistance among post and core systems: An in vitro study
Authors
Kamil Shahnawaz1,*, Swati Sagar2, Kartik Salaria3, Ankita Grace Vijay4, R Vignesh5 & Avantika Vijaysingh Jadhav6
Affiliation
1Department of Dentistry, Darbhanga Medical College, Laheriasarai, Bihar-846003, India; 2Department of Dentistry, Darbhanga Medical College & Hospital, Laheriasarai, Darbhanga, Bihar-846003, India; 3Department of Conservative Dentistry & Endodontics, Himachal Dental College, Sundernagar, Himachal Pradesh-175019, India; 4Department of Conservative Dentistry and Endodontics, Senior Lecturer, Sri Aurobindo College of Dentistry, Sri Aurobindo University, Indore, Madhya Pradesh-452001, India; 5Department of Conservative Dentistry & Endodontics, Sree Balaji Dental College & Hospital, Pallikaranai, Chennai-600100, Tamil Nadu, India; 6Department of Prosthodontics, Bharati Vidyapeeth Dental College and Hospital, Sector7, CBD Belapur Navi Mumbai, Maharashtra, India; *Corresponding author
Kamil Shahnawaz - E-mail: drkamil.health@gmail.com; Phone: +91 7396312791
Swati Sagar - E-mail: doctor.swatisagar@gmail.com; Phone: +91 7396312791
Kartik Salaria - E-mail: kkrsalaria@gmail.com; Phone: +91 9797138687
Ankita Grace Vijay - E-mail: gracylall@gmail.com; Phone: +91 9691409381
R Vignesh - E-mail: vigneshravi800@gmail.com; Phone: +91 73059 22902
Avantika Vijaysingh Jadhav - E-mail: avantika.jadhav@bharatividyapeeth.edu; Phone: +91 8369885626
Article Type
Research Article
Date
Received April 1, 2026; Revised April 30, 2026; Accepted April 30, 2026, Published April 30, 2026
Abstract
Endodontically treated teeth are highly susceptible to fracture due to loss of structural integrity. Therefore, it is of interest to compared fracture resistance and failure patterns among cast metal, prefabricated metal and fiber post-and-core systems under standardized conditions. Thirty mandibular premolars were endodontically treated, restored and subjected to oblique compressive loading at 135° until failure. Fiber posts showed the highest fracture resistance (615 ± 50 N) and predominantly favorable, repairable fractures (80%), whereas metal posts exhibited lower resistance and mainly unfavorable root fractures (p < 0.001). Thus, we show controlled biomechanical evidence supporting fiber posts as a superior restorative option for preserving root integrity.
Keywords
Fracture resistance; endodontically treated teeth; post-and-core systems; fiber posts; cast metal posts; prefabricated metal posts
Citation
Shahnawaz et al. Bioinformation 22(4): 1986-1990 (2026)
Edited by
A Prashanth
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.
