ArticleBMC oral health2025
Micro-CT evaluation of dentinal microcrack formation in mesiobuccal canals of maxillary molars following instrumentation with heat-treated rotary and reciprocating systems.
Article in BMC oral health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- The Effect of Different Types of Adhesive Systems on Marginal Integrity of Class II Resin Composite Restoration.The journal of adhesive dentistry · 2026Article
- Effect of Solvent Use on Dentinal Integrity and Filling Removal During Endodontic Retreatment: A Micro-Computed Tomography Study.Iranian endodontic journal · 2026Article
- Assessment of dentinal microcrack formation following root canal preparation with rotary, reciprocating and heat-treated NiTi files using micro-CT analysis.Bioinformation · 2026Article
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Authors and funding
5 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundThe goal of root canal preparation is to eliminate microorganisms and debris from the root canal system, while providing space for the placement of root filling materials. However, the process can lead to the formation of dentin microcracks, increasing the risk of vertical root fractures. This study used micro-CT to evaluate the formation of dentinal microcracks following instrumentation with One Curve, EdgeOne Fire, and VDW.ROTATE systems.
methodsThirty-three extracted maxillary molars with non-calcified Vertucci type 4 s mesiobuccal canals were included. After pre-instrumentation micro-CT scans, a single endodontist prepared the canals with three aforementioned rotary systems. Post-instrumentation scans were conducted and axial sections from both the pre- and post-preparation scans were analyzed by two blinded observers to identify newly formed microcracks. Cohen's Kappa coefficient assessed interobserver agreement and dentinal microcracks were evaluated using ANOVA, ANCOVA, Kruskal-Wallis, and McNemar's test (P < 0.05).
resultsAll three rotary systems led to significant increases in dentinal microcracks post-instrumentation. While the VDW.ROTATE group showed a slightly higher percentage of cracked Sect. (72%), statistical analysis showed no significant difference between the groups (P = 0.35).
conclusionPreparation of maxillary molar root canals using different rotary systems resulted in the formation of dentin microcracks, with no significant correlation to the specific system used.
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