Effect of Vapor Lock on Root Canal Debridement by Using a Side-vented Needle for Positive-pressure Irrigant Delivery

Franklin Chi Meng Tay, Li sha Gu, G. John Schoeffel, Courtney Wimmer, Lisiane Ferreira Susin, Kai Zhang, Senthil N. Arun, Jongryul Kim, Stephen Warwick Looney, David Henry Pashley

Research output: Contribution to journalArticle

168 Citations (Scopus)

Abstract

Introduction: This study examined the effect of vapor lock on canal debridement efficacy by testing the null hypothesis that there is no difference between a "closed" and an "open" system design in smear layer and debris removal by using a side-vented needle for irrigant delivery. Methods: Roots in the closed system were sealed with hot glue and embedded in polyvinylsiloxane to restrict fluid flow through the apical foramen during cleaning and shaping. For the open system, the apical foramen was enlarged and connected to the external environment via a channel within the polyvinylsiloxane to permit unrestricted fluid flow. Smear and debris scores were evaluated by using scanning electron microscopy and analyzed by using Cochran-Mantel-Haenszel statistic. Results: No difference in smear scores was detected between the 2 systems at all canal levels. Significant differences in debris scores between the 2 systems were found at each canal level: coronal (P < .001), middle (P < .001), and apical (P < .001). Conclusions: The null hypothesis was rejected; presence of an apical vapor lock effect adversely affects debridement efficacy. Thus, studies with unspecified or questionable mechanisms to restrict fluid flow through the apical foramen have to be interpreted with caution.

Original languageEnglish (US)
Pages (from-to)745-750
Number of pages6
JournalJournal of Endodontics
Volume36
Issue number4
DOIs
StatePublished - Jan 1 2010

Fingerprint

Tooth Apex
Dental Pulp Cavity
Debridement
Needles
Pressure
Smear Layer
Adhesives
Electron Scanning Microscopy

Keywords

  • Debris
  • irrigation
  • root canal
  • side-venting syringe delivery
  • smear layer
  • vapor lock

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Effect of Vapor Lock on Root Canal Debridement by Using a Side-vented Needle for Positive-pressure Irrigant Delivery. / Tay, Franklin Chi Meng; Gu, Li sha; Schoeffel, G. John; Wimmer, Courtney; Ferreira Susin, Lisiane; Zhang, Kai; Arun, Senthil N.; Kim, Jongryul; Looney, Stephen Warwick; Pashley, David Henry.

In: Journal of Endodontics, Vol. 36, No. 4, 01.01.2010, p. 745-750.

Research output: Contribution to journalArticle

Tay, FCM, Gu, LS, Schoeffel, GJ, Wimmer, C, Ferreira Susin, L, Zhang, K, Arun, SN, Kim, J, Looney, SW & Pashley, DH 2010, 'Effect of Vapor Lock on Root Canal Debridement by Using a Side-vented Needle for Positive-pressure Irrigant Delivery', Journal of Endodontics, vol. 36, no. 4, pp. 745-750. https://doi.org/10.1016/j.joen.2009.11.022
Tay, Franklin Chi Meng ; Gu, Li sha ; Schoeffel, G. John ; Wimmer, Courtney ; Ferreira Susin, Lisiane ; Zhang, Kai ; Arun, Senthil N. ; Kim, Jongryul ; Looney, Stephen Warwick ; Pashley, David Henry. / Effect of Vapor Lock on Root Canal Debridement by Using a Side-vented Needle for Positive-pressure Irrigant Delivery. In: Journal of Endodontics. 2010 ; Vol. 36, No. 4. pp. 745-750.
@article{e107b8a98f93466bbf94a9339e086176,
title = "Effect of Vapor Lock on Root Canal Debridement by Using a Side-vented Needle for Positive-pressure Irrigant Delivery",
abstract = "Introduction: This study examined the effect of vapor lock on canal debridement efficacy by testing the null hypothesis that there is no difference between a {"}closed{"} and an {"}open{"} system design in smear layer and debris removal by using a side-vented needle for irrigant delivery. Methods: Roots in the closed system were sealed with hot glue and embedded in polyvinylsiloxane to restrict fluid flow through the apical foramen during cleaning and shaping. For the open system, the apical foramen was enlarged and connected to the external environment via a channel within the polyvinylsiloxane to permit unrestricted fluid flow. Smear and debris scores were evaluated by using scanning electron microscopy and analyzed by using Cochran-Mantel-Haenszel statistic. Results: No difference in smear scores was detected between the 2 systems at all canal levels. Significant differences in debris scores between the 2 systems were found at each canal level: coronal (P < .001), middle (P < .001), and apical (P < .001). Conclusions: The null hypothesis was rejected; presence of an apical vapor lock effect adversely affects debridement efficacy. Thus, studies with unspecified or questionable mechanisms to restrict fluid flow through the apical foramen have to be interpreted with caution.",
keywords = "Debris, irrigation, root canal, side-venting syringe delivery, smear layer, vapor lock",
author = "Tay, {Franklin Chi Meng} and Gu, {Li sha} and Schoeffel, {G. John} and Courtney Wimmer and {Ferreira Susin}, Lisiane and Kai Zhang and Arun, {Senthil N.} and Jongryul Kim and Looney, {Stephen Warwick} and Pashley, {David Henry}",
year = "2010",
month = "1",
day = "1",
doi = "10.1016/j.joen.2009.11.022",
language = "English (US)",
volume = "36",
pages = "745--750",
journal = "Journal of Endodontics",
issn = "0099-2399",
publisher = "Elsevier Inc.",
number = "4",

}

TY - JOUR

T1 - Effect of Vapor Lock on Root Canal Debridement by Using a Side-vented Needle for Positive-pressure Irrigant Delivery

AU - Tay, Franklin Chi Meng

AU - Gu, Li sha

AU - Schoeffel, G. John

AU - Wimmer, Courtney

AU - Ferreira Susin, Lisiane

AU - Zhang, Kai

AU - Arun, Senthil N.

AU - Kim, Jongryul

AU - Looney, Stephen Warwick

AU - Pashley, David Henry

PY - 2010/1/1

Y1 - 2010/1/1

N2 - Introduction: This study examined the effect of vapor lock on canal debridement efficacy by testing the null hypothesis that there is no difference between a "closed" and an "open" system design in smear layer and debris removal by using a side-vented needle for irrigant delivery. Methods: Roots in the closed system were sealed with hot glue and embedded in polyvinylsiloxane to restrict fluid flow through the apical foramen during cleaning and shaping. For the open system, the apical foramen was enlarged and connected to the external environment via a channel within the polyvinylsiloxane to permit unrestricted fluid flow. Smear and debris scores were evaluated by using scanning electron microscopy and analyzed by using Cochran-Mantel-Haenszel statistic. Results: No difference in smear scores was detected between the 2 systems at all canal levels. Significant differences in debris scores between the 2 systems were found at each canal level: coronal (P < .001), middle (P < .001), and apical (P < .001). Conclusions: The null hypothesis was rejected; presence of an apical vapor lock effect adversely affects debridement efficacy. Thus, studies with unspecified or questionable mechanisms to restrict fluid flow through the apical foramen have to be interpreted with caution.

AB - Introduction: This study examined the effect of vapor lock on canal debridement efficacy by testing the null hypothesis that there is no difference between a "closed" and an "open" system design in smear layer and debris removal by using a side-vented needle for irrigant delivery. Methods: Roots in the closed system were sealed with hot glue and embedded in polyvinylsiloxane to restrict fluid flow through the apical foramen during cleaning and shaping. For the open system, the apical foramen was enlarged and connected to the external environment via a channel within the polyvinylsiloxane to permit unrestricted fluid flow. Smear and debris scores were evaluated by using scanning electron microscopy and analyzed by using Cochran-Mantel-Haenszel statistic. Results: No difference in smear scores was detected between the 2 systems at all canal levels. Significant differences in debris scores between the 2 systems were found at each canal level: coronal (P < .001), middle (P < .001), and apical (P < .001). Conclusions: The null hypothesis was rejected; presence of an apical vapor lock effect adversely affects debridement efficacy. Thus, studies with unspecified or questionable mechanisms to restrict fluid flow through the apical foramen have to be interpreted with caution.

KW - Debris

KW - irrigation

KW - root canal

KW - side-venting syringe delivery

KW - smear layer

KW - vapor lock

UR - http://www.scopus.com/inward/record.url?scp=74649084260&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=74649084260&partnerID=8YFLogxK

U2 - 10.1016/j.joen.2009.11.022

DO - 10.1016/j.joen.2009.11.022

M3 - Article

VL - 36

SP - 745

EP - 750

JO - Journal of Endodontics

JF - Journal of Endodontics

SN - 0099-2399

IS - 4

ER -