Filling analysis of artificial lateral canals after main canal obturation through three different endodontic sealers

Resumo

This study aimed to evaluate, in
vitro, the filling ability of lateral canals after main canal obturation
through three different endodontic sealers. Material and methods:
Thirty single-rooted pre-molars were used and, six lateral canals
were constructed on proximal surfaces and arranged in pairs at 3,
5 and 7 mm from the apex. After chemo-mechanical preparation,
with size #40 memory instrument, the teeth were randomly assigned
to three experimental groups, according to the root canal sealer
applied: Endofill® (group A), Sealer 26® (group B) and MTA Fillapex®
(group C). In all groups, we used active lateral condensation technique
with gutta-percha associated with sealer. After obturation, the teeth
were radiographed at buccolingual direction and the images were
digitized. The analysis of endodontic sealer plug near the lateral
canals was performed by calculating the area through Image Tool®
software. Results and Conclusion: The data were subjected to
parametric (Anova), and nonparametric (Kruskal-Wallis) tests, with
significance level of 5%. There was no difference among the tested
sealers for filling the lateral canals. Concerning to the positions of
lateral canals, no differences were also found among sealer types,
except at 7 mm from the apex, where MTA Fillapex® showed a
significantly greater filling than Sealer 26®.