Abstract
A new device for irrigation, which presents hydrodynamic activation based on the pressure-suction technology, has recently been introduced to the market: the RinsEndo system. This study compared the efficacy of the RinsEndo system and conventional (manual-dynamic) irrigation in the removal of debris from the root canal walls, using scanning electron microscopy (SEM). Twenty mandibular premolars with completely formed roots were selected and randomly divided into group 1 (irrigation with the RinsEndo system) and group 2 (conventional irrigation). The canals were irrigated with 1 mL of saline at each change of instrument. Instrumentation started with a #15 K file and continued up to a #40 K file, which was standardized as the working length instrument. Then, the teeth were sectioned in buccolingual direction and the halves were sputter-coated with gold and examined by SEM. The apical, middle and cervical root canal thirds were evaluated, and the results were analyzed statistically by the Mann-Whitney test for comparison between methods, Kruskal-Wallis test for comparison among thirds, and Miller test for individual comparisons. A significance level of 5% was set for all analyses. The results did not show significant differences (p>0.05) between methods at each third and among thirds for each technique analyzed individually. In conclusion, there was no difference in the cleaning ability of the RinsEndo system and conventional irrigation.
Highlights
The success of endodontic treatment depends on some factors, such as correct indication, accurate diagnosis, adequate cleaning and root canal preparation, quality of root canal filling, and an adequate final restoration
One of the most important goals of root canal instrumentation is the removal of pulp remnants and microorganisms and their toxins from the root canal system [1]
scanning electron microscopy (SEM) analysis is useful to evaluate the action of different instrumentation and irrigation system on the root canal walls
Summary
The success of endodontic treatment depends on some factors, such as correct indication, accurate diagnosis, adequate cleaning and root canal preparation, quality of root canal filling, and an adequate final restoration. All these factors are interdependent and important. The persistence of pulp remnants, microorganisms and bacterial byproducts may lead to treatment failure [1]. Their elimination may be achieved by the mechanical action of instruments on the root canal walls and the chemical and physical action of irrigants [2]. A new device for irrigation, which presents hydrodynamic activation based on the pressure-suction technology, has recently been introduced to the market: the RinsEndo system
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