title: Cleaning efficacy and dentin micro-hardness after root canal irrigation with a strong acid electrolytic water.
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.
authors.affiliation: Department of Operative Dentistry and Endodontics, College of Stomatology, Fourth Military Medical University, Xian, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Qing
authors.forename: Yasumitsu
authors.initials: Y
authors.lastname: Akita
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kawano
authors.forename: Sukeyuki
authors.initials: S
authors.lastname: Kawazu
authors.forename: Takakazu
authors.initials: T
authors.lastname: Yoshida
authors.forename: Ichiro
authors.initials: I
authors.lastname: Sekine
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods*; D002614:Chelating Agents / Q000737:chemistry; D003786:Dental Pulp Cavity / Q000648:ultrastructure*; D003804:Dentin / Q000648:ultrastructure*; D004492:Edetic Acid / Q000737:chemistry; D006244:Hardness; D006801:Humans; D006861:Hydrogen Peroxide / Q000737:chemistry; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D012388:Root Canal Irrigants / Q000737:chemistry*; D018915:Root Canal Preparation / Q000379:methods; D012973:Sodium Hypochlorite / Q000737:chemistry; D013314:Stress, Mechanical; D014464:Ultrasonic Therapy; D014867:Water / Q000737:chemistry*
chemical_list: D002614:Chelating Agents; D012388:Root Canal Irrigants; C106820:oxidative potential water; D014867:Water; D004492:Edetic Acid; D006861:Hydrogen Peroxide; D012973:Sodium Hypochlorite