Background: Endodontically treated teeth were known to present a higher risk of biomechanical failure compared to vital teeth. To restore back the strength of fractured root canal treated teeth, a post and core would serve as an ideal solution which protects the weakened tooth. Hence; we evaluated the fracture resistance of different post systems in endodontically treated teeth. Materials & Methods: Forty human maxillary central incisor teeth, extracted for periodontal reasons will be taken for the study with a minimum of 10 samples in each group: Group I – Custom made metal post; Group II – Custom fabricated glass fiber reinforced post; Group III – Prefabricated glass fiber post; Group IV – Carbon fiber reinforced post. All samples were decoronated at cementoenamel junction and endodontically treated. Post space was prepared and selected posts were cemented. The composite cores were prepared at a height of 5 mm. All specimens were mounted on the acrylic block, and subjected to the compressive force at 1 mm diameter at an angle of 45° to the long axis of the tooth using Instron Universal Testing Machine. The force at fracture was measured in MPa. Result: It was observed that custom fabricated cast post and cores presented with higher fracture strength than those teeth with custom made glass fiber, prefabricated glass fiber, prefabricated carbon fiber posts.
Key Words: Cast post core, Everstick post, Prefabricated glass fiber post, Carbon fiber post, Fracture resistance of endodontically treated teeth

Received: 22 February, 2019                                   Revised: 25 February, 2019                           Accepted: 7 March, 2019
Corresponding author: Dr. Thendral Annadurai, PG student, Department of Conservative Dentistry and Endodontics, Himachal Pradesh Government Dental College and Hospital, Shimla, HP, India. Email ID: thendral.bds@gmail.com.
This article may be cited as: Annadurai T, Gupta AK, Minocha A, Sharma V. Comparative evaluation of the fracture resistance of cast metal post, custom made glass fiber reinforced post, prefabricated glass fiber reinforced post, and carbon fiber reinforced posts in endodontically treated teeth – an in vitro study. Int J Res Health Allied Sci 2019; 5(1):94-98.