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3D analyses of interface voids in root canals filled with different sealer materials in combination with warm gutta-percha technique

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Abstract

Objectives

The aim of the present study was to analyze the formation of voids and gaps in root canals obturated with different sealer materials in combination with warm gutta-percha vertical compaction technique by using BeeFill® 2in1.

Materials and methods

Twenty-four single-rooted teeth were collected, and root canals were prepared by using rotary files. All teeth were randomly allocated into three groups. Each group was obturated by using the BeeFill® 2in1 system in combination with Sealapex (non-eugenol, calcium hydroxide polymeric root canal sealer; Kerr Sybron, USA), RoekoSeal (polydimethylsiloxane-based sealer; Roeko, Germany), or 2Seal (epoxy-amine resin-based sealer; VDW, Germany). Following preparation, all teeth were scanned with a micro-computed tomography (CT) scanner, and a three-dimensional reconstruction of the obturated root canals was performed to analyze the volume of interface voids and gaps in the obturated teeth.

Results

Statistical analysis demonstrated that the silicon-based sealer RoekoSeal induced significantly less voids and gaps than other tested materials. The amount of voids and gaps significantly was higher in the apical region.

Conclusions

These data indicate that none of the root canal-filled teeth were free of gaps. Teeth obturated with RoekoSeal demonstrated to have the highest quality in terms of voids and gaps formation in combination with the BeeFill® 2in1 obturation system.

Clinical relevance

These findings point to the potential benefit of micro-CT analyses for in vitro evaluation of root canal obturation systems and provide further information about sealer materials used in combination with a warm gutta-percha vertical compaction technique.

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Acknowledgments

The authors thank Mrs. B. Schiermeyer and Mrs. A. Weber for their skilled technical assistance, Mrs. Orzel for revising the manuscript, and the Medical Faculty of the University of Bonn for funding our research project.

Conflict of interest

The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Department of Periodontology, Operative and Preventive Dentistry, Dental Clinic, University of Bonn, Welschnonnenstr. 17, 53111, Bonn, Germany

    M. Wolf, K. Küpper & M. Frentzen

  2. Department of Orthodontics, Dental Clinic, University of Bonn, Bonn, Germany

    M. Wolf

  3. Department of Orthodontics, Dental Clinic, University of Cologne, Cologne, Germany

    K. Küpper

  4. Oral Technology, Dental Clinic, University of Bonn, Bonn, Germany

    S. Reimann & C. Bourauel

Authors
  1. M. Wolf
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  2. K. Küpper
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  3. S. Reimann
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  4. C. Bourauel
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  5. M. Frentzen
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Correspondence to M. Frentzen.

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Wolf, M., Küpper, K., Reimann, S. et al. 3D analyses of interface voids in root canals filled with different sealer materials in combination with warm gutta-percha technique. Clin Oral Invest 18, 155–161 (2014). https://doi.org/10.1007/s00784-013-0970-y

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  • DOI: https://doi.org/10.1007/s00784-013-0970-y

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