ArticleOdontology2026
Mechanical properties and micro-CT-based biomechanical performance of NiTi instrumentation systems in mandibular molars.
Article in Odontology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
12 authors.
Funding
Abstract
This study evaluated the cyclic fatigue, torsional, and bending resistance of five nickel-titanium (NiTi) instrumentation systems and investigated the relationship between these mechanical properties and the biomechanical performance of root canal preparation in mandibular molars using micro-computed tomography (micro-CT). A total of 200 instruments were used. One hundred and fifty new instruments (n = 10 per group, per test) from the Blue Shaper (25.06), VDW Rotate (25.06), ProTaper Ultimate (25.08), ProTaper Next (25.06), and WaveOne Gold (25.07) systems were subjected to cyclic fatigue testing, torsional fatigue testing, and bending resistance evaluation. Fractured surfaces were analyzed under scanning electron microscopy (SEM). Additionally, 50 instruments (10 per group) were used to prepare 50 mandibular molars, which were analyzed by micro-CT to assess 2D and 3D shaping parameters. WaveOne Gold (WOG) and VDW Rotate exhibited the highest cyclic fatigue resistance. VDW Rotate presented the greatest flexibility and the best results related with shaping ability, with higher canal circularity and fewer unprepared walls, indicating a more conservative and centered preparation. Conversely, Blue Shaper (BS), characterized by lower fatigue resistance and greater stiffness, produced the largest dentin removal and volumetric increase. A significant positive relationship was observed between increased flexibility/fatigue resistance and more conservative shaping outcomes. The mechanical properties of NiTi instruments, especially flexibility as indicated by cyclic fatigue and bending resistance, play an important role in predicting biomechanical preparation performance. Systems combining enhanced flexibility through thermomechanical treatment and optimized cross-sectional design provide more conservative and centered shaping, improving clinical safety and efficiency.
Indexed as
Identifiers
41964818What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.