Volume : VII, Issue : II, February - 2018

Fracture Strength of Endodontically Treated Maxillary Premolars Supported by Different Horizontal Post Systems: An In Vitro Study

Dr Annil Dhingra, Dr Anshdeep Singh, Dr Gazal Bisht, Dr Marisha Bhandari, Dr Pulkit Gupta, Dr Sheetal Grover

Abstract :

 

Introduction: The purpose of this study was to evaluate the effect of different horizontal post systems on the fracture strength of endodontically treated maxillary premolars with mesioocclusaldistal (MOD) cavities. Methods: Thirty six extracted intact upper premolars were collected, treated endodontically and divided into 3 test groups (n = 12) depending on the restoration type: Group 1 (MOD preparation with a horizontal glass fiber post), Group 2 (MOD preparation with a horizontal carbon fiber post), Group 3 (MOD preparation with a horizontal stainless steel post only). The specimens were stored in normal saline at 37C for 10 days. Then specimens were quasi–statically loaded in a universal testing machine until fracture occurred. Failure loads were then analyzed with one–way analysis of variance, followed by multiple comparisons by using post hoc significant difference test. The mode of failure was determined by visual inspection. Results: Mean (standard deviation) failure loads for groups ranged from 1094.333 (±137.9193) – 1205.400 (±217.7758) N. One–way analysis of variance showed significant differences between fracture resistances of groups. All groups showed almost catastropic fracture mode within the apical third of the roots. Conclusions: Under the conditions of this in vitro study, a horizontal carbon fiber post in a MOD cavity increased significantly the fracture resistance of the endodontically treated upper premolars.

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Article: Download PDF   DOI : 10.36106/ijsr  

Cite This Article:

Dr Annil Dhingra, Dr Anshdeep Singh, Dr Gazal Bisht, Dr Marisha Bhandari, Dr Pulkit Gupta, Dr Sheetal Grover, Fracture Strength of Endodontically Treated Maxillary Premolars Supported by Different Horizontal Post Systems: An In Vitro Study, INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH : Volume-7 | Issue-2 | February-2018

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