Restor Dent Endod.  2020 Aug;45(3):e34. 10.5395/rde.2020.45.e34.

Micro-computed tomographic evaluation of a new system for root canal filling using calcium silicatebased root canal sealers

• Tanomaru-Filho M
• Esteves Torres FF
• Pinto JC
• Santos-Junior AO
• Carita Tavares KIM
• Guerreiro-Tanomaru JM

• KMID: 2512025
• DOI: http://doi.org/10.5395/rde.2020.45.e34

Abstract

Objectives
This study evaluated by using micro-computed tomography (micro-CT) the filling ability and sealer apical extrusion promoted by a new Sealer Injection System (SIS; Angelus) with side openings needle, in comparison with the conventional injection system, associated with a new ready-to-use calcium silicate-based sealer (Bio-C Sealer).
Materials and Methods
Acrylic resin models containing a main curved artificial canal and 3 simulated lateral canals in apical, middle and cervical thirds were used. The main root canals were prepared using a rotary system up to size 35.05. The canals were filled with Bio-C sealer by using a single cone technique and the conventional delivery system or SIS. Samples were scanned in micro-CT. The percentage of voids throughout the entire extension of the main root canal and in each third of the lateral canals, besides the apical extrusion of the sealer was calculated. Data were submitted to t-test (p < 0.05).
Results
There was no difference between both systems in the main root canals filling. Although the volume percentage of voids was similar in the apical and middle thirds of lateral canals, SIS had the greatest filling ability of the cervical third lateral canal. Moreover, the conventional system showed the highest apical extrusion of the sealer.
Conclusions
The conventional and SIS obturation systems had an appropriate filling ability of the main root canal. SIS had the best filling of the cervical third of the lateral canals, besides lower sealer apical extrusion, suggesting its clinical indication.

Keyword

Endodontics; Root canal filling; Root canal obturation; X-ray microtomography

Figure

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  Figure 1 Representation of the new Sealer Injection System (SIS) with side openings that should be threaded to the Bio-C Sealer syringe for endodontic obturation (A), and the needle tip with more magnification (B).

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  Figure 2 Three-dimensional models using CTVox software showing the artificial root canals filled with the conventional system or Sealer Injection System (SIS), and the apical extrusion of Bio-C Sealer after obturation by both systems. Voids are represented in black.

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