Influence Of Activation Mode And Preheating On Intracanal Irrigant Temperature
AUSTRALIAN ENDODONTIC JOURNAL(2019)
摘要
This ex vivo study assessed the effectiveness of two activation modes to increase the intracanal temperature of 5.25% NaOCl solution and the time for a preheated-irrigant to return to its initial temperature. Ten single-rooted extracted human teeth were used. Thermocouples were adapted to the root surface and the temperature was registered following two activation modes: ultrasound (US) and thermal. Furthermore, a preheated-solution (45 degrees C/60 degrees C) was flushed into root canal to test the time needed to return to its initial temperature. Data were analysed using two-way ANOVA and Tukey's post-hoc tests (P = 0.05). Statistical analysis showed differences between the activation modes. US and thermal activation increased from 37 to 40.4 degrees C and to 62.8 degrees C respectively in 60 s. Time for preheated-irrigant to return to its initial temperature was longer for 60 degrees C. Preheating irrigant at 60 degrees C and using thermal activation to keep it warm may represent a further step of the irrigation protocol.
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关键词
heating, intracanal temperature, irrigation, sodium hypochlorite, ultrasonic
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