Optimization of Side-vented Root Canal Irrigation Needle Design: Aperture Bevel Angle and Configuration Analysis using CFD and Multicriteria Decision Analysis with In Vitro Validation and C-shaped Canal Simulation

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CE Hours: 1.0

Description: This study aimed to enhance the efficacy and safety of root canal irrigation in #25/.06 canals by optimizing side-vented needle designs, focusing on bevel angle adjustments and sealing configurations.

At the conclusion of this article, the reader will be able to: 

  • Explain how bevel angle and configuration in side-vented irrigation needles influence irrigant exchange, apical pressure, and overall irrigation effectiveness.

  • Interpret computational fluid dynamics (CFD) and in vitro validation findings regarding optimized needle designs, including solid vs hollow bevel configurations.

  • Apply the study’s conclusions to clinical scenarios, evaluating how optimized needle design might improve irrigation outcomes in complex canal morphologies such as C-shaped canals.

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Optimization of Side-vented Root Canal Irrigation Needle Design: Aperture Bevel Angle and Configuration Analysis using CFD and Multicriteria Decision Analysis with In Vitro Validation and C-shaped Canal Simulation
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Open to download resource. Published 9/1/2025
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5 Questions  |  Unlimited attempts  |  4/5 points to pass
5 Questions  |  Unlimited attempts  |  4/5 points to pass
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Certificate
1.00 CE credit  |  Certificate available
1.00 CE credit  |  Certificate available
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Jiayang Gao, DDS

Yuhua Dai, DDS, MSD

Ziteng Long, DDS

Yi Min, DDS, PhD

Ya Shen, DDS, MS, PhD

Dr. Ya Shen received her dental degree and her PhD degree, both from the Faculty of Dentistry at Wuhan University, China. From 2008 to 2011, she was a Clinical Assistant Professor in the Department of Oral Biological & Medical Sciences at the University of British Columbia (UBC) in Vancouver, Canada. From 2012 to 2016, Dr. Shen served as an Assistant Professor and was later promoted to an Associate Professor of the Department of Oral Biological & Medical Sciences and is now Professor and Chair, Division of Endodontics. She is also an Associate Member of the Department of Materials Engineering at UBC. Dr. Shen has published more than 110 papers in peer-reviewed journals. She is one of the Editors of Visual Endodontics 2012 multi-media. Dr. Shen is also a reviewer for several international journals. Her main research interests are nickel–titanium instrument fracture mechanics, biofilms, and dental material in endodontics.

Yuan Gao, DDS, PhD