Avaliação da temperatura mínima alcançada por cinco gases refrigerantes

Introduction – The cold spray gases are frequently used as a diagnosis method of possible pulpal inflammatory alterations. The objective of this study was to evaluate the capacity of these gases to reach low temperatures. Material and Methods – They were evaluated 5 cold spray gases (tetrafluorethane, hydrofluorocarbon, propane/butane and two associations of butane, ethanol, sodium benzoate, distilled water and menthol) with the assist of a digital electronic thermometer. Results – After the results analysis, using ANOVA (Tukey test), statistically significant differences (p<0,01) occurred among all of the studied groups, excepting the comparison between hydrofluorocarbon and tetrafluorethane gases. Conclusion – It was conclued that hydrofluorocarbon gas reached the lowest temperature level, following by tetrafluorethane and propane/butane gases.