IN VITRO DETERMINATION OF MINIMUM LENGTH PENETRATION OF A 27G MONOJECT NEEDLE TO IRRIGATE THE MAIN CANAL, AVOIDING EXTRUSION

Authors

  • Carlos Marchant Servicio de Salud Valparaíso San Antonio Universidad de Valparaíso
  • Fernando Aguirre CESFAM Alonso Leng, Providencia, Chile
  • Eduardo Márquez Private Practice
  • Marcelo Tapia Servicio médico estudiantil, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile

DOI:

https://doi.org/10.22370/asd.2020.1.2.2415

Keywords:

Endodontic irrigation, sodium hypochlorite, extrusion, endodontic treatment, endodontic

Abstract

Objective: To determine the minimum length penetration required of a monoject27G needle to irrigate the main canal, avoiding extrusion. 

Materials and methods: 52 teeth were used, decoronated and worked at equal lengths at a MAF 40. They were randomly assembled in 3 molds and irrigated with diluted Omnipaque. Central trend values were calculated using descriptive statistics. Barlett, Shapiro Wilk and ANOVA one-way tests were applied to analyze statistically significant differences. Subsequently the logistic regression of Oswell-Lemeshow was calculated to look for causality between variables. 

Results: Statistically significant results show that at higher needle penetration, the probability of extrusion is greater; regarding minimal length penetration to prevent extrusion, the safest length to irrigate is working length (WL) -4mm. 

Conclusions: The minimum length penetration to irrigate preventing extrusion is WL-4 mm.

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Published

2020-08-31

How to Cite

Marchant, C., Aguirre, F., Márquez, E., & Tapia, M. (2020). IN VITRO DETERMINATION OF MINIMUM LENGTH PENETRATION OF A 27G MONOJECT NEEDLE TO IRRIGATE THE MAIN CANAL, AVOIDING EXTRUSION. Applied Sciences in Dentistry, 1(2). https://doi.org/10.22370/asd.2020.1.2.2415

Issue

Vol. 1 No. 2 (2020): Mayo-Agosto

Section

Research

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