Meeting abstract

Apical Leakage after Four Endodontic Instrumentation and Filling Procedures

D. Šnjarić
S. Strika
T. Antončić
A. Sredanović
S. Pezelj-Ribarić
I. Brekalo

Abstract

The aim of this research was to examine apical obturation leakage of filled root canals by a fluid transport model after two different instrumentation techniques (“double flare” and “step-back”) combined with use of two different sealers (eucapercha and Roeko seal®).
A sample of 40 permanent single-rooted teeth was used. The coronal part of each tooth was removed at the amelo-cement junction. Teeth were divided into four groups of 10 teeth each. Root-canals of the first and second group were cleaned and shaped by “double flare” technique while “step-back” technique was performed in the third and fourth group. All root-canals were irrigated with 2.5% NaOCl during instrumentation. Prepared root-canals of the first and third group were filled with gutta-percha points and eucapercha sealer by the cold lateral condensation technique while in the second and fourth group Roeko seal® was used as a sealer instead of eucapercha
during filling procedure. Filled roots were stored in NaCl 3% at 37°C for 7 days. These procedures formed four groups: group DF/EO (double flare/eucapercha), group DF/RS (double flare/Roeko seal®, group SB/EP (step back/eucapercha) and group SB/RS (step back/Roeko seal®). Each root was mounted in a fluid transport model
and leakage was measured by the movement of an air bubble in a capillary glass tube connected to the experimental root section.
The difference between group DF/EP (0,152 μL ± 0,12), group DF/RS (0,186 μL ± 0,098), group SB/EP (0,195 μL ± 0,12), and group SB/RS (0,360 μL ± 0,230) was statistically analyzed by Sheffe test. Statiatically significant difference was determined between group DF/EO and group SB/RS. Further statistical anlysis peformed by
Mann-Whitney U test showed that different instrumentation technique were responsable for the results of analysis.
Under the conditions of this research, results obtained with fluid transport model indicate that there is no statistically significant difference between groups where rootcanals were filled with different materials. Apical leakage was signifuicantly lower where root-canals were instrumented by “double flare” technique.

Keywords

Hrčak ID:

3565

URI

https://hrcak.srce.hr/3565

Publication date:

15.9.2003.

Article data in other languages: croatian

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