Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2017 Dec;46(8):20170223.
doi: 10.1259/dmfr.20170223. Epub 2017 Nov 16.

Micro-CT and nano-CT analysis of filling quality of three different endodontic sealers

Yan Huang  1   2 , Berkan Celikten  1   3 , Karla de Faria Vasconcelos  1   4 , Laura Ferreira Pinheiro Nicolielo  1 , Nicholas Lippiatt  5 , Arda Buyuksungur  6 , Reinhilde Jacobs  1   7 , Kaan Orhan  7
Affiliations

Micro-CT and nano-CT analysis of filling quality of three different endodontic sealers

Yan Huang et al. Dentomaxillofac Radiol. 2017 Dec.

Abstract

Objectives: To investigate voids in different root canal sealers using micro-CT and nano-CT, and to explore the feasibility of using nano-CT for quantitative analysis of sealer filling quality.

Methods: 30 extracted mandibular central incisors were randomly assigned into three groups according to the applied root canal sealers (Total BC Sealer, Sure Seal Root, AH Plus) by the single cone technique. Subsequently, micro-CT and nano-CT were performed to analyse the incidence rate of voids, void fraction, void volume and their distribution in each sample.

Results: Micro-CT evaluation showed no significant difference among sealers for the incidence rate of voids or void fraction in the whole filling materials (p > 0.05), whereas a significant difference was found between AH Plus and the other two sealers using nano-CT (p < 0.05). All three sealers presented less void volume in the apical third; however, higher void volumes were observed in the apical and coronal thirds in AH Plus using micro-CT (p < 0.05), while nano-CT results displayed higher void volume in AH Plus among all the sealers and regions (p < 0.05).

Conclusions: Bioactive sealers showed higher root filling rate, lower incidence rate of voids, void fraction and void volume than AH Plus under nano-CT analysis, when round root canals were treated by the single cone technique. The disparate results suggest that the higher resolution of nano-CT have a greater ability of distinguishing internal porosity, and therefore suggesting the potential use of nano-CT in quantitative analysis of filling quality of sealers.

Keywords: MicroCT; dental seal; endotonic obturation; nanostructures; root canal filling materials.

PubMed Disclaimer

Figures

Figure 1.
Figure 1.. Renderings of three different filling materials scanned with micro-CT (voxel size = 13.73 µm) showing the 3D volumes of voids after the root canal treatment. The details of internal (arrowhead), external (arrows), and combined voids (stars) are clearly presented in AH Plus (a), Total Fill BC Sealer (b) and Sure Seal Root (c).
Figure 2.
Figure 2.. Renderings of three different filling materials scanned with nano-CT images (voxel size = 1.58 µm), which shows improved contrast and details on the 3D volumes of voids after the root canal treatment, in comparison with micro-CT images. The details of internal (arrowhead), external (arrows), and combined voids (stars) are clearly presented in AH Plus (a), Total Fill BC Sealer (b) and Sure Seal Root (c) in the coronal, middle and apical third, respectively.
See this image and copyright information in PMC

References

    1. Mann V, Rahbaran S, Lewsey J, Gulabivala K. Outcome of primary root canal treatment: systematic review of the literature - part 1. Effects of study characteristics on probability of success. Int Endod J 2007; 40: 921–39. doi: - DOI - PubMed
    1. Kandaswamy D, Venkateshbabu N, Gogulnath D, Kindo AJ. Dentinal tubule disinfection with 2% chlorhexidine gel, Propolis, morinda CitrifoliaJuice, 2% povidone iodine, and calcium hydroxide. Int Endod J 2010; 43: 419–23. doi: - DOI - PubMed
    1. Niu LN, Zhang W, Olsen M, De-Deus G, Eid AA, et al. Ability of new obturation materials to improve the seal of the root canal system: a review. Acta Biomater 2014; 10: 1050–63. doi: - DOI - PMC - PubMed
    1. Guinesi AS, Faria G, Tanomaru-Filho M, Bonetti-Filho I. Influence of sealer placement technique on the quality of root canal filling by lateral compaction or single cone. Braz Dent J 2014; 25: 117–22. doi: - DOI - PubMed
    1. Keles A, Ahmetoglu F, Ocak MS, Dayi B, Bozkurt A, Orucoglu H. Comparative analysis of three different filling techniques and the effects of experimental internal resorptive cavities on apical microleakage. Eur J Dent 2014; 8: 32–7. doi: - DOI - PMC - PubMed

Substances