Dynamic recording of irrigating fluid distribution in root canals using thermal image analysis

Aim  To investigate the influence of the size and the depth of insertion of irrigating needles, and the diameter of the master apical file on flow distribution during fluid irrigation in root canals. Methodology  Stepback canal instrumentation was employed on seven extracted human single canal teeth...

Full description

Saved in:
Bibliographic Details
Published in:International endodontic journal 2007-01, Vol.40 (1), p.11-17
Main Authors: Hsieh, Y. D., Gau, C. H., Kung Wu, S. F., Shen, E. C., Hsu, P. W., Fu, E.
Format: Article
Language:English
Subjects:
Dental Pulp Cavity
Dentistry
file diameter
Humans
irrigation
Models, Theoretical
Needles
Rheology
Root Canal Irrigants - administration & dosage
Root Canal Preparation - instrumentation
root canal surgery
thermal image analysis
tooth
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Aim  To investigate the influence of the size and the depth of insertion of irrigating needles, and the diameter of the master apical file on flow distribution during fluid irrigation in root canals. Methodology  Stepback canal instrumentation was employed on seven extracted human single canal teeth. The size of the master apical files ranged from sizes 25, 30, 35, 40, 45, 50 to size 80 within the seven teeth, respectively. A thermal imaging system (ThermaCAM; National Instruments Co., Austin, TX, USA) was used to record the dynamic fluid distribution following root canal preparation. The dynamic fluid distribution was analysed during irrigation by insertion of different irrigating needle tips (23, 25 and 27 gauge) at various depths (3, 6 and 9 mm) from the root apex. The whole process of irrigation was recorded by a video camera and analysed by two observers separately. The success of the irrigation process was defined when the irrigant was able to flow into to the apical region immediately after injection. Results  The aqueous irrigant was flushed into the apical region when a size 27 gauge irrigating needle was placed into a size 30 canal at a point 3 mm from the apical stop. When the same needle tip was placed 6 mm from the root canal apex, successful irrigation was achieved only in the canals prepared to size 50 or larger. When a size 25 gauge irrigating needle was placed 3 mm from the working length, the canal size had to be no
ISSN:0143-2885
1365-2591
DOI:10.1111/j.1365-2591.2006.01168.x