Analysis of two different endodontic desobturation techniques through clearing teeth technique

Resumo

This study aimed to analyze in vitro
the efficacy of two endodontic techniques employed for the removal
of the filling material inside root canals. Material and methods:
Twenty single-rooted lower bicuspids were selected, prepared by crowndown technique and filled with gutta-percha and Endofill® sealer,
through lateral condensation technique. The provisional restoration
was executed with Cimpat® and the teeth remained 15 days at 37°C
and 100% humidity. Next, the teeth were divided into two groups
according to the technique of desobturation and re-instrumentation.
In group A, it was used ProTaper Universal® instrument sizes D1,
D2 and D3 for desobturation procedure associated with the same
system instrument sizes F4 and F5 for re-instrumentation. In group
B, it was employed K type hand files for desobturation and reinstrumentation. After clearing teeth technique, the teeth examination
was performed by two examiners previously trained and calibrated.
Results and conclusion: Data were subjected to Fisher’s exact test,
with significance level of 5%, which showed no statistical difference
between the two techniques.