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Updated: Jan 31, 2026
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Retrograde Perfusion and Filling of Mouse Coronary Vasculature as Preparation for Micro Computed Tomography Imaging
Published on: February 10, 2012
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Root canal preparation in mandibular premolars with TRUShape and Vortex Blue: A micro-computed tomography study
Lauren E Jensen1, Sarah Murphy2, Anne E Williamson1
1Department of Endodontics, University of Iowa College of Dentistry, Iowa City, Iowa, USA.
Summary
Both TRUShape and Vortex Blue (VB) root canal instruments effectively prepared oval-shaped canals. TRUShape demonstrated a significant advantage in enhancing canal surface treatment, particularly in apical preparations.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Root canal preparation aims to clean and shape the root canal system.
- Oval-shaped canals present unique challenges for instrumentation.
- Evaluating new instrumentation systems is crucial for improving endodontic outcomes.
Purpose of the Study:
- To compare the preparation effectiveness of TRUShape and Vortex Blue (VB) instrumentation systems.
- To assess canal volume, surface area, surface treatment, and canal transportation in oval-shaped canals.
- To evaluate the impact of these systems on root canal morphology using micro-computed tomography.
Main Methods:
- Thirty extracted human mandibular premolars with oval canals were prepared using TRUShape or Vortex Blue.
- Micro-computed tomography (micro-CT) scans were performed pre- and post-preparation at 20 μm resolution.
- Three-dimensional analysis assessed canal volume, surface area, surface treatment, cross-sectional area, roundness, and transportation.
Main Results:
- Both TRUShape and Vortex Blue significantly increased canal volume and surface area similarly.
- TRUShape showed a significant enhancement in surface treatment, especially in apical preparations (P < 0.05).
- Canal transportation was minimal, exceeding 100 μm in only 8 out of 90 cross-sections.
Conclusions:
- Both TRUShape and Vortex Blue are effective for preparing oval-shaped canals.
- TRUShape offers superior surface treatment compared to Vortex Blue in the apical region.
- Further research may explore long-term clinical outcomes with these systems.
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