Irrigant dynamics of a back-to-back double side-vented needle in root canals with various tapers: a computational fluid dynamics study

Irrigant dynamics of a back-to-back double side-vented needle in root canals with various tapers: a computational fluid dynamics study

Understanding the apical pressure and irrigant flow patterns in root canals is crucial for safe and effective irrigation. Therefore, this study aimed to assess the flow characteristics of irrigants in root canal models with varying tapers during final irrigation by employing various needle designs,...

Full description

Saved in:
Bibliographic Details
Published in:Odontology Vol. 112; no. 4; pp. 1248 - 1256
Main Authors: Singh, Surmayee, Zuber, Mohammad, Verekar, Prathmesh Pravin, Shetty, Tejaswini, Srikant, N., Thomas, Manuel S.
Format: Journal Article
Language:English
Published: Singapore Springer Nature Singapore 01-10-2024
Springer Nature B.V
Subjects:
Computer applications
Computer Simulation
Dental Pulp Cavity
Dentistry
Endodontics
Equipment Design
Fluid dynamics
Fluid flow
Humans
Hydrodynamics
Lavage
Medicine
Needles
Oral and Maxillofacial Surgery
Original
Original Article
Pressure
Root Canal Irrigants
Root Canal Preparation - instrumentation
Root canals
Therapeutic Irrigation - instrumentation
Syringe
Irrigation
Computational fluid dynamics
Root canal
Needle
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Understanding the apical pressure and irrigant flow patterns in root canals is crucial for safe and effective irrigation. Therefore, this study aimed to assess the flow characteristics of irrigants in root canal models with varying tapers during final irrigation by employing various needle designs, including a back-to-back double-side-vented needle, through computational fluid dynamics. The root canal model was configured as a closed geometrical cone with a simulated apical zone (size 30) and features tapers of 4%, 6%, and 8%. Three needle types—open-ended needle (OEN), single side-vented needle (SSVN), and double side-vented needle (DSVN)—were investigated. The results indicated that for the 4% taper models, the open-ended needle generated the maximum apical pressure, followed by the double side-vented needle and the single side-vented needle. However, in the 6% and 8% tapering root canal models, the double-side-vented needle applied the lowest maximum apical pressure. Consequently, the DSVN can pose a risk for irrigant extrusion in minimally prepared canals due to heightened apical pressure. In wider canals, the DSVN exhibited lower apical pressure. The maximum irrigant replacement was observed with OEN compared to that of the closed-ended group for both flow rates. Additionally, compared with OENs, closed-ended needles exhibited nonuniform and lower shear wall stress.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1618-1247
1618-1255
1618-1255
DOI:10.1007/s10266-024-00940-2