ArticleJournal of clinical and experimental dentistry2026
Intracanal adaptation and bond strength assessment of novel liquid/powder calcium silicate-based root canal sealer.
Article in Journal of clinical and experimental dentistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Awareness about the vital role the root canal sealer plays in acquiring a three-dimensional seal necessitates continual work to develop a material that encompasses the intended physical, chemical, and biological properties. Therefore, the present study was designed to assess the sealing ability of MTApex powder/liquid and TotalFill ready-to-use calcium silicate-based formulas via measuring their adaptation and bond strength to the root canal wall. The potentiality of root canal sealer to adapt and bond with dentin wall is a suggestive caliber for obturation quality assessment. Calcium silicate-based root canal sealers gained broad acceptance due to their distinctive properties and clinical performance. MTApex is a novel calcium silicate-based root canal sealer in powder/water-based gel liquid component, which is claimed to show improved performance. Materials and Methods: Thirty extracted teeth were assigned for the study. After chemomechanical preparation, the samples were separated into group I that used (TotalFill BC), and group II that utilized (MTApex) for obturation with F3 gutta-percha matching cone. Moreover, three sections of 2mm thickness were provided from each sample; and each section was assessed by Scanning Electron Microscope and Universal Testing Machine for sealer adaptation and push-out bond strength assessment, respectively. Inter-group statistically significant difference was detected via using Mann-Whitney U test, while intra-group statistical analysis was performed using Kruskal-Wallis test. Then, pairwise comparisons were done using Mann-Whitney U test with Bonferroni correction, which detected significant differences (P≤0.05). Results: Statistically, the lowest gap diameter and the highest push-out bond strength records were reported by TotalFill root canal sealer, compared to MTApex, concerning the three root sections. The coronal root section revealed lower gap diameters and higher push-out bond strength record; this is in comparison to the other sections (P≤0.05). Conclusions: MTApex demonstrated adaptation and bond strength lower than that of TotalFill. Nevertheless, inconsistent adaptation and bond strength were reported regarding the different assessed sections, where a high level of adaptation and bond strength was detected in the coronal section, middle section, and apical section, respectively.
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