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. 2016 Jul 19;7(1-2):11-5.
doi: 10.11138/ads/2016.7.1.011. eCollection 2016 Jan-Jun.

In vitro evaluation of carrier based obturation technique: a CBCT study

Gianluca Gambarini  1 , Lucila Piasecki  2 , Giovanni Schianchi  1 , Dario Di Nardo  1 , Gabriele Miccoli  1 , Dina Al Sudani  3 , Roberto Di Giorgio  1 , Luca Testarelli  1
Affiliations

In vitro evaluation of carrier based obturation technique: a CBCT study

Gianluca Gambarini et al. Ann Stomatol (Roma). .

Abstract

Aim: The goal of the study was to compare the ability of two different carrier based obturation (CBO) techniques to reach working length and fill in three-dimensions root canal systems, by using CBCT.

Materials and methods: Twenty-six extracted molars were scanned with CBCT and 40 curved canals were selected (between 30° and 90°) and divided in two similar groups (n=20). All canals were prepared up to size 25 taper .06 using nickel-titanium instrumentation. The canals in the Group SC were obturated using Soft-Core obturators (Kerr, Romulus, Mi, USA), while Group TH canals (n= 20) were obturated using Thermafil Endodontic Obturators (Tulsa Dental Products, Tulsa, OK, USA), strictly following manufacturers' instructions for use. The obturations were analyzed by means of CBCT to measure the distance from the apical limit of obturation to the apical foramen and the presence of voids inside root canals.

Results: There was no significant difference between the two groups in the mean distance of the apical extent of the obturation (t test, p>0.05). Overfilling occurred in only 3 cases (2 in Group TH and 1 in Group SC). The percentages of voids in both groups were very low with no significant difference (Z test, p>0.05).

Conclusions: The two tested CBO techniques showed similar positive results in terms of performance, even if, after checking with verifiers, in most cases the size of the selected Soft-Core obturator was one size smaller than Thermafil.

Keywords: Cone-beam Computed Tomography; Soft-Core; Thermafil; endodontic obturation.

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Figures

Figure 1
Figure 1
The CBCT (sagittal plane) and 3D rendering of the same obturated tooth showing the presence of voids (arrows).
Figure 2
Figure 2
Detection of voids (arrow) and measurement of distance between apical foramen and obturation (dashed line), using 3D rendering.
Figure 3
Figure 3
3D rendering of a tooth obturated with Soft-Core.
Figure 4
Figure 4
3D rendering of a tooth obturated with Thermafil.
See this image and copyright information in PMC

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