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Evaluation of the interface between gutta-percha and two types of sealers using scanning electron microscopy (SEM)

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Abstract

Objectives

The aim of the present study was to evaluate the adaptation of a calcium silicate bioceramic (BC) sealer with either BC or conventional gutta-percha compared with that of AH Plus sealer in different root canal sections.

Materials and methods

Seventy-two extracted mandibular premolars were divided randomly into six groups. After standardised chemomechanical preparation, four groups were obturated with the BC sealer and BC gutta-percha or conventional gutta-percha, and the other two groups were obturated with AH Plus sealer and conventional gutta-percha either in lateral compaction or in a single cone technique. Each root was sectioned into three sections. An impression was made from each section, and replicas were then made for scanning electron microscopy (SEM) analysis. Areas and interfacial gaps were identified using image analysis software. In addition to descriptive and explorative data analyses, linear regression analysis was performed.

Results

All specimens had measurable interfacial gaps. Significantly fewer gaps were found between conventional gutta-percha and sealer compared to those observed when using the BC gutta-percha (p < 0.001). However, minor interfacial gaps between sealer and dentin were observed with the BC sealer (p = 0.04). The technique of obturation in different root canal sections did not significantly affect the sealer adaptability.

Conclusion

The type of gutta-percha as well as the sealer had a noticeable impact on the adaptability.

Clinical relevance

Different obturation techniques will result in similar outcomes. However, within the limitations of the study, there seems to be no advantage in using the BC gutta-percha.

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Funding

This study was not funded.

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Authors and Affiliations

  1. Department of Operative Dentistry and Periodontology, University Hospital, Ludwig-Maximilians-Universität München, Goethestraße 70, 80336, Munich, Germany

    Mohamed Eltair, Vinay Pitchika, Reinhard Hickel, Jan Kühnisch & Christian Diegritz

  2. Department of Endodontics, Faculty of Oral and Dental Medicine, Future University, Cairo, Egypt

    Mohamed Eltair

Authors
  1. Mohamed Eltair
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  2. Vinay Pitchika
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  3. Reinhard Hickel
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  4. Jan Kühnisch
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  5. Christian Diegritz
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Correspondence to Christian Diegritz.

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Conflicts of interest

The authors declare that they have no conflicts of interest.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors. All procedures performed in this study were performed in accordance with the ethical standards of the institutional and/or national research committee.

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Eltair, M., Pitchika, V., Hickel, R. et al. Evaluation of the interface between gutta-percha and two types of sealers using scanning electron microscopy (SEM). Clin Oral Invest 22, 1631–1639 (2018). https://doi.org/10.1007/s00784-017-2216-x

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  • DOI: https://doi.org/10.1007/s00784-017-2216-x

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