(PO95) Effect of the GentleWave System on Dentin Microhardness and Sealer Penetration: An in Vitro Study

Abstract:
This study explores the impact of the Gentlewave System on dentin hardness and sealer penetration in root canal treatment, aiming to assess its potential advantages. Conventional instrumentation can alter root canal anatomy, prompting the need for novel irrigation techniques that minimize mechanical impact. The Gentlewave System, utilizing multisonic energy to activate irrigation solutions, is highlighted for its advantages in bacterial reduction, superior debris removal, and minimal dentin erosion. To comprehensively evaluate its effects, samples (n=10) were randomly assigned to two groups - conventional root canal treatment (group 1) and Gentlewave with minimal instrumentation (group 2). Following irrigation and obturation, with AH Plus sealer and gutta-percha, and used cold lateral compaction, transverse slices were obtained at 2-, 5-, and 8-mm distances from the apex. Assessment methods included microhardness testing, scanning electron microscopy (SEM), and energy dispersive spectrometer (EDS). The Vickers test results revealed significant differences in hardness values, with the control group exhibiting the highest, and the traditional group, the lowest values. In terms of sealer penetration, the Gentlewave group demonstrated significantly higher penetration than that of the traditional group overall (p <.05). When considering slice locations, no significant differences were observed in the coronal sections. However, in the middle and apical thirds, the traditional group exhibited significantly lower sealer penetration levels (p <.05). This study provides valuable insights into the potential benefits of the Gentlewave System, showcasing its effectiveness in maintaining dentin hardness while promoting enhanced sealer penetration. These findings contribute to the ongoing discourse on innovative irrigation techniques in root canal treatments.