Evaluation of the sealing ability of different root canal sealers: a combined SEM and micro-CT study

  • Yan HUANG KU Leuven; University Hospitals Leuven; Faculty of Medicine, Department of Imaging & Pathology
  • Kaan ORHAN Ankara University; Faculty of Dentistry; Department of Dentomaxillofacial Radiology Ankara
  • Berkan CELIKTEN Ankara University; Faculty of Dentistry; Department of Endodontics
  • Ayşe Işıl ORHAN Ministry of Health; 75th Year Ankara Oral and Dental Health Centre; Division of Pedi-atric Dentistry
  • Pelin TUFENKCI Mustafa Kemal University; Faculty of Dentistry; Department of Endodontics
  • Semra SEVIMAY Ankara University; Faculty of Dentistry; Department of Endodontics
Keywords: Scanning electron microscopy, Microcomputed tomography, Root canal, Sealer

Abstract

Objective: The purpose of this study was to analyze the ability of multiple compounds to seal the dental tubules using scanning electron microscopy (SEM) and micro-computed tomogra-phy (micro-CT). Material and Methods: Twenty-four single-root human mandibular premolars were selected and instrumented with nickel-titanium rotary file and the final file size was #40/06. They were then randomly allocated into 2 groups, and all samples were filled with single cone gutta-percha (#40/06) and one of the tested sealers (AH Plus and EndoSequence BC sealers). All specimens were scanned using micro-CT and then three from each group were randomly selected for SEM analysis. Results: According to SEM, both root canal sealers showed sufficient adaptation to dentin along the whole length of the root canal, though the coronal sections presented superior sealing than the apical sections. Micro porosity analyses revealed that the volume of closed pores and the surface of closed pores had the largest values in the coronal sections, followed by the middle and the apical sections for both sealants (p<0.05). However, no significant difference was observed for those two parameters between AH Plus and EndoSequence BC sealers in any of the three sections (p>;0.05), whereas they were larger in the apical section when the AH Plus sealer was used. Conclusions: By using the single cone technique, neither EndoSequence or AH Plus pro-vides a porosity-free root canal filling. The EndoSequence BC sealer may have similar sealing abilities regarding the whole root canal as the AH Plus sealer. A better sealing effect could be obtained in the coronal and middle sections of a root canal than the apical part by using the tested sealers.

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Published
2018-01-01
Section
Original Articles