Effect of simulated intraosseous sinusoidal pressure on NaOCl extrusion

Xue Cai, Xiao yan Wang, Filippo Santarcangelo, G. John Schoeffel, Brian Edward Bergeron, Franklin Chi Meng Tay, Li na Niu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Introduction: The present study examined the effects of irrigant flow rate and simulated intraosseous sinusoidal pressure on the rate of NaOCl extrusion from the apical terminus of a faux root canal. Methods: An extrusion setup was designed to enable irrigant extrusion to be opposed by 30 mm Hg simulated intraosseous pressure. The faux canal apex was opposed by atmospheric + 30 mm Hg pressure (experimental) or atmospheric pressure only (control group). Using five irrigant delivery rates (15.6 8.0, 4.0, 3.4 or 3.0 mL/min), the extrusion rates of 2% NaOCl from the faux apex were measured in both groups (n = 16). Data were analysed with two-factor ANOVA and pairwise comparisons at α = 0.05. Correlation between NaOCl delivery rates and extrusion rates in both groups were analysed with the Pearson product-moment procedure. Result: Irrespective of the presence or absence of simulated sinusoidal pressure, NaOCl extrusion rates were positively-correlated with irrigant flow rates. For the factor “irrigant flow rates”, significant differences in NaOCl extrusion rates were identified among all flow rates (p < 0.05), except for the pairwise comparison between 4.0 and 3.4 mL/min in the control. For all irrigant flow rates, NaOCl extrusion rate was significantly lower in the presence of 30 mm Hg simulated sinusoidal pressure than that obtained in the absence of opposing pressure (p < 0.05). Conclusion: In the presence of 30 mm Hg simulated intraosseous pressure, NaOCl delivered via a side-vented needle inserted to 1 mm short of working length may be prevented from extrusion when its flow rate is ≤ 3.0 mL/min. Clinical Significance: When opposed by intraosseous sinusoidal pressure, NaOCl delivered via a side-vented needle inserted to 1 mm short of working length may be prevented from extrusion when its flow rate is ≤ 3.0 mL/min.

Original languageEnglish (US)
Pages (from-to)46-50
Number of pages5
JournalJournal of Dentistry
Volume78
DOIs
StatePublished - Nov 1 2018

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Pressure
Needles
Atmospheric Pressure
Dental Pulp Cavity
Analysis of Variance
Control Groups

Keywords

  • Apical extrusion
  • Delivery rate
  • Intraosseous sinusoidal pressure
  • Irrigant
  • Sodium hypochlorite

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Effect of simulated intraosseous sinusoidal pressure on NaOCl extrusion. / Cai, Xue; Wang, Xiao yan; Santarcangelo, Filippo; Schoeffel, G. John; Bergeron, Brian Edward; Tay, Franklin Chi Meng; Niu, Li na.

In: Journal of Dentistry, Vol. 78, 01.11.2018, p. 46-50.

Research output: Contribution to journalArticle

Cai, Xue ; Wang, Xiao yan ; Santarcangelo, Filippo ; Schoeffel, G. John ; Bergeron, Brian Edward ; Tay, Franklin Chi Meng ; Niu, Li na. / Effect of simulated intraosseous sinusoidal pressure on NaOCl extrusion. In: Journal of Dentistry. 2018 ; Vol. 78. pp. 46-50.
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abstract = "Introduction: The present study examined the effects of irrigant flow rate and simulated intraosseous sinusoidal pressure on the rate of NaOCl extrusion from the apical terminus of a faux root canal. Methods: An extrusion setup was designed to enable irrigant extrusion to be opposed by 30 mm Hg simulated intraosseous pressure. The faux canal apex was opposed by atmospheric + 30 mm Hg pressure (experimental) or atmospheric pressure only (control group). Using five irrigant delivery rates (15.6 8.0, 4.0, 3.4 or 3.0 mL/min), the extrusion rates of 2{\%} NaOCl from the faux apex were measured in both groups (n = 16). Data were analysed with two-factor ANOVA and pairwise comparisons at α = 0.05. Correlation between NaOCl delivery rates and extrusion rates in both groups were analysed with the Pearson product-moment procedure. Result: Irrespective of the presence or absence of simulated sinusoidal pressure, NaOCl extrusion rates were positively-correlated with irrigant flow rates. For the factor “irrigant flow rates”, significant differences in NaOCl extrusion rates were identified among all flow rates (p < 0.05), except for the pairwise comparison between 4.0 and 3.4 mL/min in the control. For all irrigant flow rates, NaOCl extrusion rate was significantly lower in the presence of 30 mm Hg simulated sinusoidal pressure than that obtained in the absence of opposing pressure (p < 0.05). Conclusion: In the presence of 30 mm Hg simulated intraosseous pressure, NaOCl delivered via a side-vented needle inserted to 1 mm short of working length may be prevented from extrusion when its flow rate is ≤ 3.0 mL/min. Clinical Significance: When opposed by intraosseous sinusoidal pressure, NaOCl delivered via a side-vented needle inserted to 1 mm short of working length may be prevented from extrusion when its flow rate is ≤ 3.0 mL/min.",
keywords = "Apical extrusion, Delivery rate, Intraosseous sinusoidal pressure, Irrigant, Sodium hypochlorite",
author = "Xue Cai and Wang, {Xiao yan} and Filippo Santarcangelo and Schoeffel, {G. John} and Bergeron, {Brian Edward} and Tay, {Franklin Chi Meng} and Niu, {Li na}",
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T1 - Effect of simulated intraosseous sinusoidal pressure on NaOCl extrusion

AU - Cai, Xue

AU - Wang, Xiao yan

AU - Santarcangelo, Filippo

AU - Schoeffel, G. John

AU - Bergeron, Brian Edward

AU - Tay, Franklin Chi Meng

AU - Niu, Li na

PY - 2018/11/1

Y1 - 2018/11/1

N2 - Introduction: The present study examined the effects of irrigant flow rate and simulated intraosseous sinusoidal pressure on the rate of NaOCl extrusion from the apical terminus of a faux root canal. Methods: An extrusion setup was designed to enable irrigant extrusion to be opposed by 30 mm Hg simulated intraosseous pressure. The faux canal apex was opposed by atmospheric + 30 mm Hg pressure (experimental) or atmospheric pressure only (control group). Using five irrigant delivery rates (15.6 8.0, 4.0, 3.4 or 3.0 mL/min), the extrusion rates of 2% NaOCl from the faux apex were measured in both groups (n = 16). Data were analysed with two-factor ANOVA and pairwise comparisons at α = 0.05. Correlation between NaOCl delivery rates and extrusion rates in both groups were analysed with the Pearson product-moment procedure. Result: Irrespective of the presence or absence of simulated sinusoidal pressure, NaOCl extrusion rates were positively-correlated with irrigant flow rates. For the factor “irrigant flow rates”, significant differences in NaOCl extrusion rates were identified among all flow rates (p < 0.05), except for the pairwise comparison between 4.0 and 3.4 mL/min in the control. For all irrigant flow rates, NaOCl extrusion rate was significantly lower in the presence of 30 mm Hg simulated sinusoidal pressure than that obtained in the absence of opposing pressure (p < 0.05). Conclusion: In the presence of 30 mm Hg simulated intraosseous pressure, NaOCl delivered via a side-vented needle inserted to 1 mm short of working length may be prevented from extrusion when its flow rate is ≤ 3.0 mL/min. Clinical Significance: When opposed by intraosseous sinusoidal pressure, NaOCl delivered via a side-vented needle inserted to 1 mm short of working length may be prevented from extrusion when its flow rate is ≤ 3.0 mL/min.

AB - Introduction: The present study examined the effects of irrigant flow rate and simulated intraosseous sinusoidal pressure on the rate of NaOCl extrusion from the apical terminus of a faux root canal. Methods: An extrusion setup was designed to enable irrigant extrusion to be opposed by 30 mm Hg simulated intraosseous pressure. The faux canal apex was opposed by atmospheric + 30 mm Hg pressure (experimental) or atmospheric pressure only (control group). Using five irrigant delivery rates (15.6 8.0, 4.0, 3.4 or 3.0 mL/min), the extrusion rates of 2% NaOCl from the faux apex were measured in both groups (n = 16). Data were analysed with two-factor ANOVA and pairwise comparisons at α = 0.05. Correlation between NaOCl delivery rates and extrusion rates in both groups were analysed with the Pearson product-moment procedure. Result: Irrespective of the presence or absence of simulated sinusoidal pressure, NaOCl extrusion rates were positively-correlated with irrigant flow rates. For the factor “irrigant flow rates”, significant differences in NaOCl extrusion rates were identified among all flow rates (p < 0.05), except for the pairwise comparison between 4.0 and 3.4 mL/min in the control. For all irrigant flow rates, NaOCl extrusion rate was significantly lower in the presence of 30 mm Hg simulated sinusoidal pressure than that obtained in the absence of opposing pressure (p < 0.05). Conclusion: In the presence of 30 mm Hg simulated intraosseous pressure, NaOCl delivered via a side-vented needle inserted to 1 mm short of working length may be prevented from extrusion when its flow rate is ≤ 3.0 mL/min. Clinical Significance: When opposed by intraosseous sinusoidal pressure, NaOCl delivered via a side-vented needle inserted to 1 mm short of working length may be prevented from extrusion when its flow rate is ≤ 3.0 mL/min.

KW - Apical extrusion

KW - Delivery rate

KW - Intraosseous sinusoidal pressure

KW - Irrigant

KW - Sodium hypochlorite

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