Análisis de la remoción de hidroxido de calcio con diferentes técnicas de activación del irrigante. Estudio in vitro.

Abstract

Introduction: Complete removal of calcium hydroxide [Ca(OH)₂] before root canal obturation is critical and may be directly related to the treatment outcome. Objective: To analyze the removal of calcium hydroxide using different irrigant activation techniques in extracted teeth. Materials and Methods: This study was conducted using a descriptive, in vitro, ex vivo, and comparative approach, with a sample of 40 single-rooted teeth, grouped according to the four techniques applied. Results: NAVITIP ULTRADENT and IRRISONIC E1 HELSE showed 15% of extensive residue in the coronal zone. Endoactivator reached 20% in the middle third and 10% in the apical zone. In contrast, IRRISONIC E1 HELSE recorded 20% with no residue in the apical third; the EDDY tip presented an intermediate distribution without critical concentrations. In the coronal third, NAVITIP ULTRADENT and IRRISONIC E1 HELSE had the highest average ranks (25.30), while in the middle third, Endoactivator predominated (28.60). In the apical region, IRRISONIC E1 HELSE recorded the lowest value (7.60), in contrast to Endoactivator, NAVITIP, and EDDY, which exceeded 23 points.