Author/Authors :
Poggio، Claudio نويسنده 1Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, Section of Dentistry, University of Pavia , , Ceci، Matteo نويسنده 2Department of Brain and Behavioral Sciences, Section of Statistics, University of Pavia , , Beltrami، Riccardo نويسنده 2Department of Brain and Behavioral Sciences, Section of Statistics, University of Pavia , , Colombo، Marco نويسنده 1Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, Section of Dentistry, University of Pavia , , Dagna، Alberto نويسنده 1Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, Section of Dentistry, University of Pavia ,
Abstract :
Background: The aim of this study was to assess the infl uence of temperature on the viscosity
of different endodontic irrigants.
Materials and Methods: The measurements of viscosity of 3% hydrogen peroxide, 0.9% sodium
chloride, aqueous solution of 0.2% chlorhexidine (CHX) and 0.2% cetrimide, 5% sodium hypochlorite
(NaOCl) and 17% ethylenediaminetetraacetic acid (EDTA) at different temperatures (22°C, 30°C,
40°C, 50°C and 60°C) were obtained using Mohr balance and Ostwald viscometer. The Shapiro-
Wilk test and Mann-Whitney U-tests were used for the statistical analysis. (? = 0.05).
Results: No signifi cant differences were recorded at each temperature among 3% hydrogen
peroxide, 0.9% sodium chloride and aqueous solution of 0.2% CHX and 0.2% cetrimide. 5%
NaOCl and 17% EDTA showed the higher values. Viscosity statistically decreased with increasing
temperature.
Conclusion: Within the limitations of this study, 5% NaOCl and 17% EDTA are signifi cantly viscous
at room temperature and their viscosity reduces with elevating temperature.
