H2O2 for Root Canal Irrigation: Cleaning and Dentin HardnessScientific Research

original title: Cleaning efficacy and dentin micro-hardness after root canal irrigation with a strong acid electrolytic water

Authors:

Yu Qing, Yasumitsu Akita, Satoshi Kawano, Sukeyuki Kawazu, Takakazu Yoshida, Ichiro Seikine

DOI: 10.1016/j.joen.2006.07.003

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Abstract:

The purpose of this study was to evaluate the cleaning effect of root canal walls using strong acid electrolytic water (SAEW) as a root canal irrigant, and to investigate the influence of SAEW on the root canal dentin by micro-hardness test. Forty-three single-rooted, single-canaled teeth were instrumented using standard step-back technique with K-files. Irrigation was performed using distilled water, 5.25% NaOCl and 3% H(2)O(2), SAEW, or 15% EDTA solution in five groups. Samples were prepared to be examined under a scanning electron microscope (SEM) and micro Vickers hardness (H(V)) test machine. Our results showed that the root cleaning effects of the combined use of SAEW and NaOCl solution as root canal irrigants were equivalent to those in the group with NaOCl and 15% EDTA. When SAEW was used for 1 min under ultrasonic vibration, no decreases in the hardness of dentin inside the root canal were detected.

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