Measurement of pressure and flow rates during irrigation of a root canal ex vivo with three endodontic needles

International Endodontic Journal - Tập 40 Số 7 - Trang 504-513 - 2007
Christos Boutsioukis1, T. Lambrianidis1, E. G. Kastrinakis2, P. Bekiaroglou2
1Department of Endodontology, Dental School
2Chemical Engineering Department, School of Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece

Tóm tắt

AbstractAim  To monitor ex vivo intra‐canal irrigation with three endodontic needles (25, 27 and 30 gauge) and compare them in terms of irrigant flow rate, intra‐barrel pressure, duration of irrigation and volume of irrigant delivered.Methodology  A testing system was constructed to allow measurement of selected variables with pressure and displacement transducers during ex vivo intra‐canal irrigation with a syringe and three different needles (groups A, B, C) into a prepared root canal. Ten specialist endodontists performed the irrigation procedure. Each operator performed ten procedures with each needle. Data recorded by the transducers were analysed using Friedman's test, Wilcoxon Signed Rank test, Mann–Whitney U‐test and Kendall's Tb test. The level of significance was set to 95%.Results  Significant differences were detected among the three needles for most variables. Duration of delivery and flow rates significantly decreased as the needle diameter increased, whilst pressure increased up to 400–550 kPa. Gender of the operator had a significant impact on the results. Experience of the operators (years) were negatively correlated to volume of irrigant (all groups), to the duration of delivery (groups A, B) and to the average flow rate (group A).Conclusions  Finer diameter needles require increased effort to deliver the irrigant and result in higher intra‐barrel pressure. The syringe and needles used tolerated the pressure developed. Irrigant flow rate should be considered as a factor directly influencing flow beyond the needle. Wide variations of flow rate were observed among operators. Syringe irrigation appears difficult to standardize and control.

Từ khóa


Tài liệu tham khảo

10.1016/0030-4220(82)90103-7

10.1016/S0099-2399(75)80097-5

10.1016/j.tripleo.2005.06.021

Brown JI, 1975, An in vitro evaluation of the particle flotation capability of various irrigating solutions, Journal of the California Dental Association, 3, 60

10.1016/S0099-2399(83)80162-9

10.1111/j.1834-7819.1998.tb00173.x

10.1111/j.1365-2591.1989.tb00920.x

10.1111/j.0143-2885.2004.00804.x

10.1111/j.1601-1546.2005.00133.x

10.1111/j.1601-1546.2005.00135.x

Ingle JI, 2002, Endodontics, 502

10.1136/emj.20.5.453

10.1016/S0099-2399(06)80998-2

10.1902/jop.1985.56.5.297

10.1097/01.brs.0000154670.49227.65

Lambrianidis TP, 2001, Risk management in root canal treatment, 163

10.1097/00004770-200111000-00011

10.1111/j.1365-2591.2004.00848.x

10.1038/sj.bdj.4805382

Meyer G, 1991, Die effizienz von maschinell gestützter und manueller wurzelkanal‐spülung im in‐vitro‐vergleich, Deutsche Zahnärztliche Zeitschrift, 46, 558

10.1111/j.1365-2591.1982.tb01277.x

10.1016/0030-4220(82)90446-7

10.1016/0141-5425(89)90128-3

10.1016/j.joen.2006.04.011

10.1177/00220345810600100301

10.1097/01.DON.0000129039.59003.9D

10.1016/0030-4220(77)90285-7

10.1016/S0099-2399(89)80023-8

Ruddle CJ, 2002, Pathways of the Pulp, 258

10.1097/00004770-200310000-00016

10.1016/0030-4220(71)90230-1

10.1111/j.1365-2591.2004.00906.x

10.1016/0030-4220(71)90040-5

10.1097/00004770-200106000-00001

10.1111/j.1365-2591.2006.01108.x

10.1034/j.1601-1546.2002.20104.x

Tilton JN, 1999, Perry's Chemical Engineer's Handbook, 6.1

10.1097/01.don.0000152294.35507.35

Wesselink P, 2004, Textbook of Endodontology, 163

10.1111/j.1365-2591.2005.00935.x

10.1111/j.1365-2591.1995.tb00303.x

10.1038/sj.bdj.4811467

10.1016/j.joen.2005.09.014

Thông tin
Thông tin xuất bản

International Endodontic Journal

Tập 40 Số 7

504-513

Thông tin tác giả