ORIGINAL RESEARCH article
Front. Dent. Med.
Sec. Endodontics
Volume 6 - 2025 | doi: 10.3389/fdmed.2025.1695090
This article is part of the Research TopicAdvances in Root Canal Obturation: Integration of Innovative Filling Materials and Contemporary TechniquesView all articles
Micro computed tomography analysis of void volume in sealer layer placed using Vibrospiral novel instrument – an in vitro study
Provisionally accepted
- 1Nitte University, Mangalore, India
- 2Independent Researcher, London, United Kingdom
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ABSTRACT: Aim: Endodontic sealers form an intermediary layer between the solid canal filling material, like gutta-percha, and the dentinal wall to fill the voids and porosities between them and establish a fluid-impervious seal, which is essential to prevent reinfection of the canal system. Sealer placement instruments are used to carry and coat the sealer on the walls of the fine, tortuous root canal system. Vibrospiral is a piezoelectrically activated novel sealer coating instrument that was designed to place a thin, uniform, void-free sealer layer by its vibratory motion. This study compared the void volume percentage in the sealer layer when placed with Vibrospiral and two other conventional coating instruments. Methodology: 36 caries-free natural mandibular premolars were disinfected, decoronated, and biomechanically prepared. They were randomly assigned to one of the three groups (n=12) based on the mode of sealer application: Group 1-K file, Group 2-Lentulo spiral, and Group 3-Vibrospiral. Following sealer placement, the canals were obturated with gutta-percha, and the sealer was allowed to set. Samples were then subjected to Micro Computed Tomography (Micro CT) to assess the void volume. The data acquired was statistically analysed using ANOVA and the Tukey test, and the significance level was set at < 0.05. Results: The findings revealed that Vibrospiral placed sealer layers with the least void volume percentage overall (3.5%), followed by Lentulo spiral (19.21%) and K file (22.01%). Conclusions: The piezoelectrically activated novel sealer placing instrument, Vibrospiral, has promising potential in effectively placing a relatively non-voided sealer layer. Conflict of Interest: The authors report no conflict of interest.
Keywords: Vibrospiral, voids, Good health and well-being, Quality education, Industry, Innovation and Infrastructure
Received: 29 Aug 2025; Accepted: 19 Sep 2025.
Copyright: © 2025 Banerjee, Hegde and Shenoy. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Mithra Nidarsh Hegde, drmithra.hegde@nitte.edu.in
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