Journal of Conservative Dentistry
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Year : 2015  |  Volume : 18  |  Issue : 4  |  Page : 297-301

Effect of post space preparation on the sealing ability of mineral trioxide aggregate and Gutta-percha: A bacterial leakage study

1 Department of Conservative Dentistry and Endodontics, Pacific Dental College, Debari, Udaipur, Rajasthan, India
2 Department of Conservative Dentistry and Endodontics, Shri Aurobindo College of Dentistry, Indore, Madhya Pradesh, India

Correspondence Address:
Dr. Sandeep S Metgud
Pacific Dental College, Debari, Udaipur - 313 014, Rajasthan
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0972-0707.159729

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Aim: The purpose of this study was to evaluate the effect of post space preparation on the sealing ability of teeth obturated with mineral trioxide aggregate (MTA) and Gutta-percha. Materials and Methods: Fifty intact human mandibular premolars, after decoronation and biomechanical preparation, were randomly divided into three experimental groups. In Group A (n = 10), the canals were obturated with Gutta-percha using cold lateral compaction technique, followed by immediate post space preparation. In Group B (n = 10), the canals were obturated with 8 mm of MTA and in Group C (n = 10), sectional obturation with 4 mm of MTA was done, followed by delayed post space preparation. All specimens were subjected to bacterial leakage analysis, and the occurrence of turbidity was checked. Results: All specimens in the lateral compaction group leaked. The mean number of days at which leakage was observed in Groups A, B and C were 18.5 days, 93.6 days and 95.5 days. Conclusions: MTA can be considered as an alternative to Gutta-percha as an apical third restorative material for teeth indicated for post and core, as it demonstrates better-sealing ability compared with Gutta-percha. Further, the removal of set MTA for post space preparation does not disrupt the integrity of the remaining apical MTA.

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