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Related Experiment Video

Updated: May 17, 2026

Guided Endodontics: Three-Dimensional Planning and Template-Aided Preparation of Endodontic Access Cavities
07:14

Guided Endodontics: Three-Dimensional Planning and Template-Aided Preparation of Endodontic Access Cavities

Published on: May 24, 2022

Comparative micro-computed tomographic evaluation of two carrier-based obturation systems.

Carla Zogheib1, A Naaman, A Sigurdsson

  • 1School of Dentistry, Department of Endodontics, Saint-Joseph University, Beirut, Lebanon, zogheibcarla@gmail.com.

Clinical Oral Investigations
|November 2, 2012
PubMed
Summary

Neither Thermafil nor RealSeal 1 root canal filling techniques were gap-free, though both showed good sealing. Micro-CT analysis revealed voids, particularly at the 1mm level, in all samples.

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Area of Science:

  • Endodontics
  • Dental Materials Science
  • Biomaterials

Background:

  • Root canal obturation aims for a hermetic seal to prevent bacterial reinfection.
  • Carrier-based obturation systems offer a method for filling root canals.
  • Evaluating the void percentage in the apical third is crucial for assessing obturation quality.

Purpose of the Study:

  • To quantitatively measure and compare the percentage volume of voids and gaps in the apical third of root canals obturated with two carrier-based techniques.
  • To evaluate the sealing ability of Thermafil (gutta-percha) and RealSeal 1 (Resilon) systems using micro-computed tomography.

Main Methods:

  • Fifty-four single-rooted teeth underwent root canal preparation and were randomly assigned to two groups.
  • Group 1: Obturation with thermoplasticized gutta-percha (Thermafil).

Related Experiment Videos

Last Updated: May 17, 2026

Guided Endodontics: Three-Dimensional Planning and Template-Aided Preparation of Endodontic Access Cavities
07:14

Guided Endodontics: Three-Dimensional Planning and Template-Aided Preparation of Endodontic Access Cavities

Published on: May 24, 2022

  • Group 2: Obturation with Resilon/RealSeal 1. Samples were scanned using micro-CT for void analysis.

    • Main Results:

    • No root canal-filled teeth were completely free of gaps or voids.
    • No statistically significant difference in void percentage was observed between Thermafil and RealSeal 1 (P > 0.05).
    • A statistically significant difference in void volume was found across different apical levels, with the 1 mm level exhibiting the highest void percentage (P < 0.05).

    Conclusions:

    • Both carrier-based obturation systems demonstrated good sealing capabilities in the apical third of root canals.
    • Despite good performance, neither Thermafil nor RealSeal 1 achieved a completely gap-free obturation.
    • The 1 mm apical level is a critical area prone to higher void formation, irrespective of the material used.