Obturation of Lateral Canals by a New Reciprocating Spreader and a Conventional Finger Spreader by Lateral Condensation Technique: in vitro Comparative Study
Citation Information :
Hameed MR, Ali AH, Rashad MM. Obturation of Lateral Canals by a New Reciprocating Spreader and a Conventional Finger Spreader by Lateral Condensation Technique: in vitro Comparative Study. World J Dent 2018; 9 (4):265-269.
Aim: The aim was to evaluate post-obturation extensions of the gutta-percha/sealer in apical/coronal simulated lateral canals using a new manufactured nickel–titanium (NiTi) reciprocating spreader (experimental) compared with a conventional finger spreader (control).
Materials and methods: Ten endodontic plastic training blocks were divided into two groups (I and II), each block containing two main, two coronal, and two apical lateral canals. All main canals were prepared from size 10 to 30 using K-file and rotary handpiece (W&H; Austria) with a torque 1:4 at 15 mm working length using a surveyor to position the file perpendicular to the surface of the block. The preparation time for each size was 1 minute with 15-second irrigation with isopropyl alcohol. The prepared main canals were filled with size 30 master gutta-percha and sealer (Endofill, PD, Switzerland) and condensed using the control and experimental spreaders for 30 seconds in groups I and II respectively, followed by insertion and condensation of auxiliary gutta-percha till no more auxiliary can be applied. The lateral extension of gutta-percha/sealer within the apical/coronal lateral canals was measured from the base of attachment of lateral canal with the main canal using digital stereomicroscope (Leica MZ 12.5, Heerbrugg, Germany). Analysis of variance (ANOVA) and paired t-test were used to assess the results statistically at significance level α = 0.05.
Results: The highest extension of gutta-percha/sealer was in the coronal lateral canal in group II, while the lowest extension of gutta-percha and sealer was in the apical and coronal lateral canals in group I. There was a significantly higher extension of gutta-percha/sealer in the coronal/apical lateral canals in group II compared with that in group I (p < 0.05).
Conclusion: The use of the new NiTi reciprocating spreader results in a higher extension of gutta-percha/sealer in lateral canals compared with the use of the conventional finger spreader.
Clinical significance: Application of the new NiTi reciprocating spreader may result in a more precise three-dimensional obturation of root/lateral canal space.
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