A micro-computed tomography evaluation of voids using calcium silicate-based materials in teeth with simulated internal root resorption

Vildan Tek; Sevinç Aktemur Türker

doi:10.5395/rde.2018.45.e5

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Tek and Türker: A micro-computed tomography evaluation of voids using calcium silicate-based materials in teeth with simulated internal root resorption

Research Article

Restor Dent Endod 2020;45(1):e5.

Published online: 4 February 2020

DOI: https://doi.org/10.5395/rde.2018.45.e5

A micro-computed tomography evaluation of voids using calcium silicate-based materials in teeth with simulated internal root resorption

Vildan Tek, Sevinç Aktemur Türker^*

Department of Endodontics, Faculty of Dentistry, Zonguldak Bülent Ecevit University, Zonguldak, Turkey

^*Correspondence to Sevinç Aktemur Türker, DDS, PhD Associate Professor, Department of Endodontics, Faculty of Dentistry, Bülent Ecevit University, Zonguldak 67600, Turkey. E-mail: sevincaktemur@hotmail.com

Received 27 September 2019 Revised 13 October 2019 Accepted 14 October 2019

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objectives

The obturation quality of MTA, Biodentine, Total Fill BC root canal sealer (RCS), and warm gutta-percha (WGP) in teeth with simulated internal root resorption (IRR) was evaluated by using micro-computed tomography.

Materials and Methods

Standardized IRR cavities were created using 40 extracted maxillary central incisor teeth and randomly assigned into 4 groups (n = 10). IRR cavities were filled with MTA, Biodentine, Total Fill BC RCS (bulk-fill form) and WGP + Total Fill BC RCS. Percentage of voids between resorptive cavity walls and obturation material (external void), and inside the filling materials (internal voids) were measured.

Results

Total Fill BC sealer in the bulk-fill form presented significantly highest values of external and internal void percentages (p < 0.05). Biodentine showed a significantly lowest external void percentage (p < 0.05). WGP + Total Fill BC RCS presented significantly lower values of internal void percentages than all groups (p < 0.05), except Biodentine (p > 0.05).

Conclusion

None of the filling materials were created void-free obturation in resorption cavities. Biodentine may favor its application in teeth with IRR over Angelus MTA and bulk-fill form of Total Fill BC.

Keywords: Biodentine, Calcium silicate, Internal root resorption, Micro-computed tomography, MTA cement

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Figure 1.

Experimental design. (A) Semi-circular cavities were created on each half of the roots; (B) Individual molds in Eppendorf tubes; (C) Periapical radiography; (D) Micro-computed tomography (µCT) images for obturation of resorption cavity.

Figure 2.

Micro-computed tomography (µCT) analysis stages. (A) Measurement of percentage voids on CTAn software (Bruker microCT); (B). Selection of the region of interest; (C) Threshold selection from gray-level histogram.

Table 1.

Median and range percentage values of experimental groups (%)

Groups	External void	Internal void
Angelus MTA	3.48 ^a (2.15–4.01)	2.24 ^a (0.95–6.55)
Biodentine	0.80 ^b (0.01–2.38)	0.59 ^b (0.01–1.56)
Total Fill BC (bulk-fill)	11.86 ^c (10.05–15.54)	13.85 ^c (6.38–22.91)
WGP + Total Fill BC	6.04 ^d (3.55–8.62)	0.17 ^b (0.06–0.62)

Different superscript letters represents statistically significant differences (p < 0.05).

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