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. 2015:2015:708639.
doi: 10.1155/2015/708639. Epub 2015 Apr 23.

Comparing the Coronal Seal of Different Thicknesses of MTA with Gutta-Percha after Post Space Preparation

Mohammad Frough Reyhani  1 , Hamidreza Yavari  1 , Negin Ghasemi  1 , Saeed Rahimi  2 , Mohammad Hosien Soroush Barhaghi  3 , Hadi Mokhtari  1 , Payman Sarikhani  4
Affiliations

Comparing the Coronal Seal of Different Thicknesses of MTA with Gutta-Percha after Post Space Preparation

Mohammad Frough Reyhani et al. ScientificWorldJournal. 2015.

Abstract

Introduction: The aim of this study was to compare the coronal seal of different thicknesses of MTA with gutta-percha after post space preparation.

Materials and methods: A total of 50 maxillary central incisors randomly divided into 5 experimental groups (n = 8). After preparation of the root canals with step back technique, in groups 1 and 2, post spaces were prepared and 4 or 5 mm gutta-percha remained in the apical, respectively. In groups 3, 4, and 5, there was 1-2 and 3 mm MTA in the apical, respectively. The ten teeth serve as control groups. The teeth were connected to a bacterial microleakage evaluation system. The study period was 120 days and the samples were evaluated on ten-day intervals; Meier-Kaplan technique was used for estimation of the mean time of microleakage to occur. Log-rank test was used for comparison of microleakage.

Results: Number of samples exhibiting microleakage in MTA was less than those of gutta-percha at all intervals. Means of days with no microleakage were maximum and minimum with 3 mm MTA and 4 mm gutta-percha, respectively.

Conclusion: Obturation of root canals using the MTA technique provides a proper seal with the minimum thickness of MTA in teeth requiring post space preparation.

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Figures

Figure 1
Figure 1
The leakage evaluation system.
See this image and copyright information in PMC

References

    1. Schilder H. Filling root canals in three dimensions. Journal of Endodontics. 2006;11:723–724. - PubMed
    1. Galen W. W., Muller K. I. Restoration of endodontically treated teeth. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology. 2006;102:786–821.
    1. Rahimi S., Shahi S. H., Nezafati S., Reyhani M. F., Shakouie S., Jalili L. In vitro comparison of three different lengths of remaining gutta-percha for establishment of apical seal after post-space preparation. Journal of Oral Science. 2008;50(4):435–439. doi: 10.2334/josnusd.50.435. - DOI - PubMed
    1. Cobankara F. K., Orucoglu H., Ozkan H. B., Yildirim C. Effect of immediate and delayed post preparation on apical microleakage by using methacrylate-based EndoREZ sealer with or without accelerator. Journal of Endodontics. 2008;34(12):1504–1507. doi: 10.1016/j.joen.2008.08.030. - DOI - PubMed
    1. Metzger Z., Abramovitz R., Abramovitz I., Tagger M. Correlation between remaining length of root canal fillings after immediate post space preparation and coronal leakage. Journal of Endodontics. 2000;26(12):724–728. doi: 10.1097/00004770-200012000-00014. - DOI - PubMed

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