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ORIGINAL ARTICLE
Year : 2019  |  Volume : 11  |  Issue : 6  |  Page : 236-239

An in vitro evaluation of fracture resistance strength of different post systems in endodontically treated teeth


1 Department of Conservative Dentistry and Endodontics, Sree Anjaneya Institute of Dental Sciences, Calicut, Kerala, India
2 Department of Prosthetic Dentistry, College of Dentistry, King Khalid University, Abha, Saudi Arabia

Correspondence Address:
Dr. Shabna Moyin
Department of Conservative Dentistry and Endodontics, Sree Anjaneya Institute of Dental Sciences, Calicut, Kerala
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/JPBS.JPBS_306_18

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Aim: This study aimed to evaluate the fracture resistance strength of different post systems in endodontically treated teeth. Materials and Methods: Freshly extracted 60 single-rooted first premolars were selected for this study. Conventional step-back technique was used to prepare a canal for all the teeth. Obturation was carried out and post space was created using a Peeso reamer. All teeth were randomly divided into three groups of 20 samples in each group: Group I, teeth inserted with prefabricated carbon posts; Group II, teeth inserted with prefabricated zirconia posts; and Group III, teeth inserted with prefabricated everStick posts. Core buildup was performed using light-cured composite resin. Compressive load required to fracture the tooth was measured using a universal testing machine. Results: The compressive strength of zirconia posts was highest with a mean of 796.10±20.78 followed by carbon posts (628.22±18.11) and lower compressive strength was exhibited by everStick posts (534.13±19.98). An analysis of variance revealed a statistically highly significant difference (P < 0.005) among the different posts used, and a statistically significant difference between carbon posts vs. zirconia posts, carbon posts vs. everStick posts, and zirconia posts vs. everStick posts (P < 0.05). Conclusion: Zirconia posts show the maximum fracture resistance than the carbon posts and everStick posts.


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